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Diffstat (limited to '')
| -rw-r--r-- | aclocal.m4 | 2267 |
1 files changed, 2267 insertions, 0 deletions
diff --git a/aclocal.m4 b/aclocal.m4 new file mode 100644 index 0000000..cc97bd4 --- /dev/null +++ b/aclocal.m4 @@ -0,0 +1,2267 @@ +dnl +dnl Bash specific tests +dnl +dnl Some derived from PDKSH 5.1.3 autoconf tests +dnl +dnl Copyright (C) 1987-2021 Free Software Foundation, Inc. +dnl + +dnl +dnl Check for <inttypes.h>. This is separated out so that it can be +dnl AC_REQUIREd. +dnl +dnl BASH_HEADER_INTTYPES +AC_DEFUN(BASH_HEADER_INTTYPES, +[ + AC_CHECK_HEADERS(inttypes.h) +]) + +dnl +dnl check for typedef'd symbols in header files, but allow the caller to +dnl specify the include files to be checked in addition to the default +dnl +dnl This could be changed to use AC_COMPILE_IFELSE instead of AC_EGREP_CPP +dnl +dnl BASH_CHECK_TYPE(TYPE, HEADERS, DEFAULT[, VALUE-IF-FOUND]) +AC_DEFUN(BASH_CHECK_TYPE, +[ +AC_REQUIRE([BASH_HEADER_INTTYPES]) +AC_MSG_CHECKING(for $1) +AC_CACHE_VAL(bash_cv_type_$1, +[AC_EGREP_CPP($1, [#include <sys/types.h> +#if HAVE_STDLIB_H +#include <stdlib.h> +#endif +#if HAVE_STDDEF_H +#include <stddef.h> +#endif +#if HAVE_INTTYPES_H +#include <inttypes.h> +#endif +#if HAVE_STDINT_H +#include <stdint.h> +#endif +$2 +], bash_cv_type_$1=yes, bash_cv_type_$1=no)]) +AC_MSG_RESULT($bash_cv_type_$1) +ifelse($#, 4, [if test $bash_cv_type_$1 = yes; then + AC_DEFINE($4) + fi]) +if test $bash_cv_type_$1 = no; then + AC_DEFINE_UNQUOTED($1, $3) +fi +]) + +dnl +dnl BASH_CHECK_DECL(FUNC) +dnl +dnl Check for a declaration of FUNC in stdlib.h and inttypes.h like +dnl AC_CHECK_DECL +dnl +AC_DEFUN(BASH_CHECK_DECL, +[ +AC_REQUIRE([BASH_HEADER_INTTYPES]) +AC_CHECK_DECLS([$1]) +]) + +AC_DEFUN(BASH_DECL_PRINTF, +[AC_MSG_CHECKING(for declaration of printf in <stdio.h>) +AC_CACHE_VAL(bash_cv_printf_declared, +[AC_RUN_IFELSE([AC_LANG_SOURCE([[ +#include <stdio.h> +#ifdef __STDC__ +typedef int (*_bashfunc)(const char *, ...); +#else +typedef int (*_bashfunc)(); +#endif +#include <stdlib.h> +int +main() +{ +_bashfunc pf; +pf = (_bashfunc) printf; +exit(pf == 0); +} +]])], [bash_cv_printf_declared=yes], [bash_cv_printf_declared=no], + [AC_MSG_WARN(cannot check printf declaration if cross compiling -- defaulting to yes) + bash_cv_printf_declared=yes] +)]) +AC_MSG_RESULT($bash_cv_printf_declared) +if test $bash_cv_printf_declared = yes; then +AC_DEFINE(PRINTF_DECLARED) +fi +]) + +AC_DEFUN(BASH_DECL_SBRK, +[AC_MSG_CHECKING(for declaration of sbrk in <unistd.h>) +AC_CACHE_VAL(bash_cv_sbrk_declared, +[AC_EGREP_HEADER(sbrk, unistd.h, + bash_cv_sbrk_declared=yes, bash_cv_sbrk_declared=no)]) +AC_MSG_RESULT($bash_cv_sbrk_declared) +if test $bash_cv_sbrk_declared = yes; then +AC_DEFINE(SBRK_DECLARED) +fi +]) + +dnl +dnl Check for sys_siglist[] or _sys_siglist[] +dnl +AC_DEFUN(BASH_DECL_UNDER_SYS_SIGLIST, +[AC_MSG_CHECKING([for _sys_siglist in signal.h or unistd.h]) +AC_CACHE_VAL(bash_cv_decl_under_sys_siglist, +[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ +#include <sys/types.h> +#include <signal.h> +#ifdef HAVE_UNISTD_H +#include <unistd.h> +#endif]], [[ char *msg = _sys_siglist[2]; ]])], + [bash_cv_decl_under_sys_siglist=yes], [bash_cv_decl_under_sys_siglist=no], + [AC_MSG_WARN(cannot check for _sys_siglist[] if cross compiling -- defaulting to no)])])dnl +AC_MSG_RESULT($bash_cv_decl_under_sys_siglist) +if test $bash_cv_decl_under_sys_siglist = yes; then +AC_DEFINE(UNDER_SYS_SIGLIST_DECLARED) +fi +]) + +AC_DEFUN(BASH_UNDER_SYS_SIGLIST, +[AC_REQUIRE([BASH_DECL_UNDER_SYS_SIGLIST]) +AC_MSG_CHECKING([for _sys_siglist in system C library]) +AC_CACHE_VAL(bash_cv_under_sys_siglist, +[AC_RUN_IFELSE([AC_LANG_SOURCE([[ +#include <sys/types.h> +#include <signal.h> +#ifdef HAVE_UNISTD_H +#include <unistd.h> +#endif +#include <stdlib.h> +#ifndef UNDER_SYS_SIGLIST_DECLARED +extern char *_sys_siglist[]; +#endif +int +main() +{ +char *msg = (char *)_sys_siglist[2]; +exit(msg == 0); +} +]])], + [bash_cv_under_sys_siglist=yes], [bash_cv_under_sys_siglist=no], + [AC_MSG_WARN(cannot check for _sys_siglist[] if cross compiling -- defaulting to no) + bash_cv_under_sys_siglist=no] +)]) +AC_MSG_RESULT($bash_cv_under_sys_siglist) +if test $bash_cv_under_sys_siglist = yes; then +AC_DEFINE(HAVE_UNDER_SYS_SIGLIST) +fi +]) + +dnl this defines HAVE_DECL_SYS_SIGLIST +AC_DEFUN([BASH_DECL_SYS_SIGLIST], +[AC_CHECK_DECLS([sys_siglist],,, +[#include <signal.h> +/* NetBSD declares sys_siglist in unistd.h. */ +#ifdef HAVE_UNISTD_H +# include <unistd.h> +#endif +]) +]) + +AC_DEFUN(BASH_SYS_SIGLIST, +[AC_REQUIRE([BASH_DECL_SYS_SIGLIST]) +AC_MSG_CHECKING([for sys_siglist in system C library]) +AC_CACHE_VAL(bash_cv_sys_siglist, +[AC_RUN_IFELSE([AC_LANG_SOURCE([[ +#include <sys/types.h> +#include <signal.h> +#ifdef HAVE_UNISTD_H +#include <unistd.h> +#endif +#include <stdlib.h> +#if !HAVE_DECL_SYS_SIGLIST +extern char *sys_siglist[]; +#endif +int +main() +{ +char *msg = sys_siglist[2]; +exit(msg == 0); +} +]])], [bash_cv_sys_siglist=yes], [bash_cv_sys_siglist=no], + [AC_MSG_WARN(cannot check for sys_siglist if cross compiling -- defaulting to no) + bash_cv_sys_siglist=no] +)]) +AC_MSG_RESULT($bash_cv_sys_siglist) +if test $bash_cv_sys_siglist = yes; then +AC_DEFINE(HAVE_SYS_SIGLIST) +fi +]) + +dnl Check for the various permutations of sys_siglist and make sure we +dnl compile in siglist.o if they're not defined +AC_DEFUN(BASH_CHECK_SYS_SIGLIST, [ +AC_REQUIRE([BASH_SYS_SIGLIST]) +AC_REQUIRE([BASH_DECL_UNDER_SYS_SIGLIST]) +AC_REQUIRE([BASH_FUNC_STRSIGNAL]) +if test "$bash_cv_sys_siglist" = no && test "$bash_cv_under_sys_siglist" = no && test "$bash_cv_have_strsignal" = no; then + SIGLIST_O=siglist.o +else + SIGLIST_O= +fi +AC_SUBST([SIGLIST_O]) +]) + +dnl Check for sys_errlist[] and sys_nerr, check for declaration +AC_DEFUN(BASH_SYS_ERRLIST, +[AC_MSG_CHECKING([for sys_errlist and sys_nerr]) +AC_CACHE_VAL(bash_cv_sys_errlist, +[AC_LINK_IFELSE([AC_LANG_PROGRAM([[ +#include <errno.h> +]],[[ +extern char *sys_errlist[]; +extern int sys_nerr; +char *msg = sys_errlist[sys_nerr - 1]; +]] )], +[bash_cv_sys_errlist=yes], [bash_cv_sys_errlist=no] +)]) +AC_MSG_RESULT($bash_cv_sys_errlist) +if test $bash_cv_sys_errlist = yes; then +AC_DEFINE(HAVE_SYS_ERRLIST) +fi +]) + +dnl +dnl Check if dup2() does not clear the close on exec flag +dnl +AC_DEFUN(BASH_FUNC_DUP2_CLOEXEC_CHECK, +[AC_MSG_CHECKING(if dup2 fails to clear the close-on-exec flag) +AC_CACHE_VAL(bash_cv_dup2_broken, +[AC_RUN_IFELSE([AC_LANG_SOURCE([[ +#include <sys/types.h> +#include <fcntl.h> +#include <stdlib.h> +int +main() +{ + int fd1, fd2, fl; + fd1 = open("/dev/null", 2); + if (fcntl(fd1, 2, 1) < 0) + exit(1); + fd2 = dup2(fd1, 1); + if (fd2 < 0) + exit(2); + fl = fcntl(fd2, 1, 0); + /* fl will be 1 if dup2 did not reset the close-on-exec flag. */ + exit(fl != 1); +} +]])], [bash_cv_dup2_broken=yes], [bash_cv_dup2_broken=no], + [AC_MSG_WARN(cannot check dup2 if cross compiling -- defaulting to no) + bash_cv_dup2_broken=no] +)]) +AC_MSG_RESULT($bash_cv_dup2_broken) +if test $bash_cv_dup2_broken = yes; then +AC_DEFINE(DUP2_BROKEN) +fi +]) + +AC_DEFUN(BASH_FUNC_STRSIGNAL, +[AC_MSG_CHECKING([for the existence of strsignal]) +AC_CACHE_VAL(bash_cv_have_strsignal, +[AC_LINK_IFELSE( + [AC_LANG_PROGRAM([[#include <sys/types.h> +#include <signal.h> +#include <string.h>]], +[[char *s = (char *)strsignal(2);]])], + [bash_cv_have_strsignal=yes], [bash_cv_have_strsignal=no])]) +AC_MSG_RESULT($bash_cv_have_strsignal) +if test $bash_cv_have_strsignal = yes; then +AC_DEFINE(HAVE_STRSIGNAL) +fi +]) + +dnl Check to see if opendir will open non-directories (not a nice thing) +AC_DEFUN(BASH_FUNC_OPENDIR_CHECK, +[AC_REQUIRE([AC_HEADER_DIRENT])dnl +AC_MSG_CHECKING(if opendir() opens non-directories) +AC_CACHE_VAL(bash_cv_opendir_not_robust, +[AC_RUN_IFELSE([AC_LANG_SOURCE([[ +#include <stdio.h> +#include <sys/types.h> +#include <fcntl.h> +#ifdef HAVE_UNISTD_H +# include <unistd.h> +#endif /* HAVE_UNISTD_H */ +#ifdef HAVE_SYS_STAT_H +#include <sys/stat.h> +#endif +#if defined(HAVE_DIRENT_H) +# include <dirent.h> +#else +# define dirent direct +# ifdef HAVE_SYS_NDIR_H +# include <sys/ndir.h> +# endif /* SYSNDIR */ +# ifdef HAVE_SYS_DIR_H +# include <sys/dir.h> +# endif /* SYSDIR */ +# ifdef HAVE_NDIR_H +# include <ndir.h> +# endif +#endif /* HAVE_DIRENT_H */ +#include <stdlib.h> +int +main() +{ +DIR *dir; +int fd, err; +err = mkdir("bash-aclocal", 0700); +if (err < 0) { + perror("mkdir"); + exit(1); +} +unlink("bash-aclocal/not_a_directory"); +fd = open("bash-aclocal/not_a_directory", O_WRONLY|O_CREAT|O_EXCL, 0666); +write(fd, "\n", 1); +close(fd); +dir = opendir("bash-aclocal/not_a_directory"); +unlink("bash-aclocal/not_a_directory"); +rmdir("bash-aclocal"); +exit (dir == 0); +} +]])], [bash_cv_opendir_not_robust=yes], [bash_cv_opendir_not_robust=no], + [AC_MSG_WARN(cannot check opendir if cross compiling -- defaulting to no) + bash_cv_opendir_not_robust=no] +)]) +AC_MSG_RESULT($bash_cv_opendir_not_robust) +if test $bash_cv_opendir_not_robust = yes; then +AC_DEFINE(OPENDIR_NOT_ROBUST) +fi +]) + +dnl +dnl A signed 16-bit integer quantity +dnl +AC_DEFUN(BASH_TYPE_BITS16_T, +[ +if test "$ac_cv_sizeof_short" = 2; then + AC_CHECK_TYPE(bits16_t, short) +elif test "$ac_cv_sizeof_char" = 2; then + AC_CHECK_TYPE(bits16_t, char) +else + AC_CHECK_TYPE(bits16_t, short) +fi +]) + +dnl +dnl An unsigned 16-bit integer quantity +dnl +AC_DEFUN(BASH_TYPE_U_BITS16_T, +[ +if test "$ac_cv_sizeof_short" = 2; then + AC_CHECK_TYPE(u_bits16_t, unsigned short) +elif test "$ac_cv_sizeof_char" = 2; then + AC_CHECK_TYPE(u_bits16_t, unsigned char) +else + AC_CHECK_TYPE(u_bits16_t, unsigned short) +fi +]) + +dnl +dnl A signed 32-bit integer quantity +dnl +AC_DEFUN(BASH_TYPE_BITS32_T, +[ +if test "$ac_cv_sizeof_int" = 4; then + AC_CHECK_TYPE(bits32_t, int) +elif test "$ac_cv_sizeof_long" = 4; then + AC_CHECK_TYPE(bits32_t, long) +else + AC_CHECK_TYPE(bits32_t, int) +fi +]) + +dnl +dnl An unsigned 32-bit integer quantity +dnl +AC_DEFUN(BASH_TYPE_U_BITS32_T, +[ +if test "$ac_cv_sizeof_int" = 4; then + AC_CHECK_TYPE(u_bits32_t, unsigned int) +elif test "$ac_cv_sizeof_long" = 4; then + AC_CHECK_TYPE(u_bits32_t, unsigned long) +else + AC_CHECK_TYPE(u_bits32_t, unsigned int) +fi +]) + +AC_DEFUN(BASH_TYPE_PTRDIFF_T, +[ +if test "$ac_cv_sizeof_int" = "$ac_cv_sizeof_char_p"; then + AC_CHECK_TYPE(ptrdiff_t, int) +elif test "$ac_cv_sizeof_long" = "$ac_cv_sizeof_char_p"; then + AC_CHECK_TYPE(ptrdiff_t, long) +elif test "$ac_cv_type_long_long" = yes && test "$ac_cv_sizeof_long_long" = "$ac_cv_sizeof_char_p"; then + AC_CHECK_TYPE(ptrdiff_t, [long long]) +else + AC_CHECK_TYPE(ptrdiff_t, int) +fi +]) + +dnl +dnl A signed 64-bit quantity +dnl +AC_DEFUN(BASH_TYPE_BITS64_T, +[ +if test "$ac_cv_sizeof_char_p" = 8; then + AC_CHECK_TYPE(bits64_t, char *) +elif test "$ac_cv_sizeof_double" = 8; then + AC_CHECK_TYPE(bits64_t, double) +elif test -n "$ac_cv_type_long_long" && test "$ac_cv_sizeof_long_long" = 8; then + AC_CHECK_TYPE(bits64_t, [long long]) +elif test "$ac_cv_sizeof_long" = 8; then + AC_CHECK_TYPE(bits64_t, long) +else + AC_CHECK_TYPE(bits64_t, double) +fi +]) + +AC_DEFUN(BASH_SIZEOF_RLIMIT, +[AC_MSG_CHECKING(for size of struct rlimit fields) +AC_CACHE_VAL(bash_cv_sizeof_rlim_cur, +[AC_RUN_IFELSE([AC_LANG_SOURCE([[ +#ifdef HAVE_SYS_TIME_H +#include <sys/time.h> +#endif +#include <stdlib.h> +#include <sys/resource.h> +main() +{ +struct rlimit r; +exit(sizeof (r.rlim_cur)); +} +]])], [bash_cv_sizeof_rlim_cur=$?], [bash_cv_sizeof_rlim_cur=$?], + [AC_MSG_WARN(cannot check size of rlimit fields if cross compiling -- defaulting to long) + bash_cv_sizeof_rlim_cur=$ac_cv_sizeof_long] +)]) +AC_MSG_RESULT($bash_cv_sizeof_rlim_cur) +]) + +AC_DEFUN(BASH_SIZEOF_QUAD_T, +[AC_MSG_CHECKING(for size of quad_t) +AC_CACHE_VAL(bash_cv_sizeof_quad_t, +[AC_RUN_IFELSE([AC_LANG_SOURCE([[ +#include <sys/types.h> +#include <stdlib.h> +#if HAVE_INTTYPES_H +#include <inttypes.h> +#endif +#if HAVE_STDINT_H +#include <stdint.h> +#endif + +main() +{ +#if HAVE_QUAD_T +quad_t x; +exit(sizeof (x)); +#else +exit (0); +#endif +} +]])], [bash_cv_sizeof_quad_t=$?], [bash_cv_sizeof_quad_t=$?], + [AC_MSG_WARN(cannot check size of quad_t if cross compiling -- defaulting to 0) + bash_cv_sizeof_quad_t=0] +)]) +AC_MSG_RESULT($bash_cv_sizeof_quad_t) +]) + +dnl +dnl Type of struct rlimit fields: updated to check POSIX rlim_t and +dnl if it doesn't exist determine the best guess based on sizeof(r.rlim_cur) +dnl +AC_DEFUN(BASH_TYPE_RLIMIT, +[AC_MSG_CHECKING(for type of struct rlimit fields) +AC_CACHE_VAL(bash_cv_type_rlimit, +[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ +#include <sys/types.h> +#include <sys/resource.h>]], +[[rlim_t xxx;]] +)], + [bash_cv_type_rlimit=rlim_t], [ +BASH_SIZEOF_RLIMIT +BASH_SIZEOF_QUAD_T +if test $bash_cv_sizeof_rlim_cur = $ac_cv_sizeof_long; then + bash_cv_type_rlimit='unsigned long' +elif test $bash_cv_sizeof_rlim_cur = $ac_cv_sizeof_long_long; then + bash_cv_type_rlimit='unsigned long long' +elif test $bash_cv_sizeof_rlim_cur = $ac_cv_sizeof_int; then + bash_cv_type_rlimit='unsigned int' +elif test $bash_cv_sizeof_rlim_cur = $bash_cv_sizeof_quad_t; then + bash_cv_type_rlimit='quad_t' +else + bash_cv_type_rlimit='unsigned long' +fi +] +)]) +AC_MSG_RESULT($bash_cv_type_rlimit) +AC_DEFINE_UNQUOTED([RLIMTYPE], [$bash_cv_type_rlimit]) +]) + +AC_DEFUN(BASH_TYPE_SIG_ATOMIC_T, +[AC_CACHE_CHECK([for sig_atomic_t in signal.h], ac_cv_have_sig_atomic_t, +[AC_LINK_IFELSE( + [AC_LANG_PROGRAM( + [[ #include <signal.h> ]], + [[ sig_atomic_t x; ]])], + [ac_cv_have_sig_atomic_t=yes],[ac_cv_have_sig_atomic_t=no])]) +if test "$ac_cv_have_sig_atomic_t" = "no" +then + BASH_CHECK_TYPE(sig_atomic_t, [#include <signal.h>], int) +fi +]) + +AC_DEFUN(BASH_FUNC_LSTAT, +[dnl Cannot use AC_CHECK_FUNCS(lstat) because Linux defines lstat() as an +dnl inline function in <sys/stat.h>. +AC_CACHE_CHECK([for lstat], bash_cv_func_lstat, +[AC_LINK_IFELSE( + [AC_LANG_PROGRAM([[ + #include <sys/types.h> + #include <sys/stat.h> + ]], + [[ lstat(".",(struct stat *)0); ]])], + [bash_cv_func_lstat=yes],[bash_cv_func_lstat=no])]) +if test $bash_cv_func_lstat = yes; then + AC_DEFINE(HAVE_LSTAT) +fi +]) + +AC_DEFUN(BASH_FUNC_INET_ATON, +[ +AC_CACHE_CHECK([for inet_aton], bash_cv_func_inet_aton, +[AC_LINK_IFELSE([AC_LANG_PROGRAM([[ +#include <sys/types.h> +#include <netinet/in.h> +#include <arpa/inet.h> +struct in_addr ap;]], [[ inet_aton("127.0.0.1", &ap); ]])], +[bash_cv_func_inet_aton=yes], [bash_cv_func_inet_aton=no])]) +if test $bash_cv_func_inet_aton = yes; then + AC_DEFINE(HAVE_INET_ATON) +else + AC_LIBOBJ(inet_aton) +fi +]) + +AC_DEFUN(BASH_FUNC_GETENV, +[AC_MSG_CHECKING(to see if getenv can be redefined) +AC_CACHE_VAL(bash_cv_getenv_redef, +[AC_RUN_IFELSE([AC_LANG_SOURCE([[ +#ifdef HAVE_UNISTD_H +# include <unistd.h> +#endif +#include <stdlib.h> +#ifndef __STDC__ +# ifndef const +# define const +# endif +#endif +char * +getenv (name) +#if defined (__linux__) || defined (__bsdi__) || defined (convex) + const char *name; +#else + char const *name; +#endif /* !__linux__ && !__bsdi__ && !convex */ +{ +return "42"; +} +int +main() +{ +char *s; +/* The next allows this program to run, but does not allow bash to link + when it redefines getenv. I'm not really interested in figuring out + why not. */ +#if defined (NeXT) +exit(1); +#endif +s = getenv("ABCDE"); +exit(s == 0); /* force optimizer to leave getenv in */ +} +]])], [bash_cv_getenv_redef=yes], [bash_cv_getenv_redef=no], + [AC_MSG_WARN(cannot check getenv redefinition if cross compiling -- defaulting to yes) + bash_cv_getenv_redef=yes] +)]) +AC_MSG_RESULT($bash_cv_getenv_redef) +if test $bash_cv_getenv_redef = yes; then +AC_DEFINE(CAN_REDEFINE_GETENV) +fi +]) + +# We should check for putenv before calling this +AC_DEFUN(BASH_FUNC_STD_PUTENV, +[ +AC_REQUIRE([AC_C_PROTOTYPES]) +AC_CACHE_CHECK([for standard-conformant putenv declaration], bash_cv_std_putenv, +[AC_LINK_IFELSE([AC_LANG_PROGRAM([[ +#if HAVE_STDLIB_H +#include <stdlib.h> +#endif +#if HAVE_STDDEF_H +#include <stddef.h> +#endif +#ifndef __STDC__ +# ifndef const +# define const +# endif +#endif +#ifdef PROTOTYPES +extern int putenv (char *); +#else +extern int putenv (); +#endif +]], [[return (putenv == 0);]] )], +[bash_cv_std_putenv=yes], [bash_cv_std_putenv=no] +)]) +if test $bash_cv_std_putenv = yes; then +AC_DEFINE(HAVE_STD_PUTENV) +fi +]) + +# We should check for unsetenv before calling this +AC_DEFUN(BASH_FUNC_STD_UNSETENV, +[ +AC_REQUIRE([AC_C_PROTOTYPES]) +AC_CACHE_CHECK([for standard-conformant unsetenv declaration], bash_cv_std_unsetenv, +[AC_LINK_IFELSE([AC_LANG_PROGRAM([[ +#if HAVE_STDLIB_H +#include <stdlib.h> +#endif +#if HAVE_STDDEF_H +#include <stddef.h> +#endif +#ifndef __STDC__ +# ifndef const +# define const +# endif +#endif +#ifdef PROTOTYPES +extern int unsetenv (const char *); +#else +extern int unsetenv (); +#endif +]], [[return (unsetenv == 0);]] )], +[bash_cv_std_unsetenv=yes], [bash_cv_std_unsetenv=no] +)]) +if test $bash_cv_std_unsetenv = yes; then +AC_DEFINE(HAVE_STD_UNSETENV) +fi +]) + +AC_DEFUN(BASH_FUNC_ULIMIT_MAXFDS, +[AC_MSG_CHECKING(whether ulimit can substitute for getdtablesize) +AC_CACHE_VAL(bash_cv_ulimit_maxfds, +[AC_RUN_IFELSE([AC_LANG_SOURCE([[ +#include <stdlib.h> +#ifdef HAVE_ULIMIT_H +#include <ulimit.h> +#endif +int +main() +{ +long maxfds = ulimit(4, 0L); +exit (maxfds == -1L); +} +]])], [bash_cv_ulimit_maxfds=yes], [bash_cv_ulimit_maxfds=no], + [AC_MSG_WARN(cannot check ulimit if cross compiling -- defaulting to no) + bash_cv_ulimit_maxfds=no] +)]) +AC_MSG_RESULT($bash_cv_ulimit_maxfds) +if test $bash_cv_ulimit_maxfds = yes; then +AC_DEFINE(ULIMIT_MAXFDS) +fi +]) + +AC_DEFUN(BASH_FUNC_GETCWD, +[AC_MSG_CHECKING([if getcwd() will dynamically allocate memory with 0 size]) +AC_CACHE_VAL(bash_cv_getcwd_malloc, +[AC_RUN_IFELSE([AC_LANG_SOURCE([[ +#include <stdio.h> +#ifdef HAVE_UNISTD_H +#include <unistd.h> +#endif +#include <stdlib.h> + +int +main() +{ + char *xpwd; + xpwd = getcwd(0, 0); + exit (xpwd == 0); +} +]])], [bash_cv_getcwd_malloc=yes], [bash_cv_getcwd_malloc=no], + [AC_MSG_WARN(cannot check whether getcwd allocates memory when cross-compiling -- defaulting to no) + bash_cv_getcwd_malloc=no] +)]) +AC_MSG_RESULT($bash_cv_getcwd_malloc) +if test $bash_cv_getcwd_malloc = no; then +AC_DEFINE(GETCWD_BROKEN) +AC_LIBOBJ(getcwd) +fi +]) + +dnl +dnl This needs BASH_CHECK_SOCKLIB, but since that's not called on every +dnl system, we can't use AC_PREREQ. Only called if we need the socket library +dnl +AC_DEFUN(BASH_FUNC_GETHOSTBYNAME, +[if test "X$bash_cv_have_gethostbyname" = "X"; then +_bash_needmsg=yes +else +AC_MSG_CHECKING(for gethostbyname in socket library) +_bash_needmsg= +fi +AC_CACHE_VAL(bash_cv_have_gethostbyname, +[AC_LINK_IFELSE([AC_LANG_PROGRAM([[ +#include <netdb.h> +]], [[ +struct hostent *hp; +hp = gethostbyname("localhost"); +]] )], +[bash_cv_have_gethostbyname=yes], [bash_cv_have_gethostbyname=no] +)]) +if test "X$_bash_needmsg" = Xyes; then + AC_MSG_CHECKING(for gethostbyname in socket library) +fi +AC_MSG_RESULT($bash_cv_have_gethostbyname) +if test "$bash_cv_have_gethostbyname" = yes; then +AC_DEFINE(HAVE_GETHOSTBYNAME) +fi +]) + +AC_DEFUN(BASH_FUNC_FNMATCH_EXTMATCH, +[AC_MSG_CHECKING(if fnmatch does extended pattern matching with FNM_EXTMATCH) +AC_CACHE_VAL(bash_cv_fnm_extmatch, +[AC_RUN_IFELSE([AC_LANG_SOURCE([[ +#include <fnmatch.h> + +int +main() +{ +#ifdef FNM_EXTMATCH + return (0); +#else + return (1); +#endif +} +]])], [bash_cv_fnm_extmatch=yes], [bash_cv_fnm_extmatch=no], + [AC_MSG_WARN(cannot check FNM_EXTMATCH if cross compiling -- defaulting to no) + bash_cv_fnm_extmatch=no] +)]) +AC_MSG_RESULT($bash_cv_fnm_extmatch) +if test $bash_cv_fnm_extmatch = yes; then +AC_DEFINE(HAVE_LIBC_FNM_EXTMATCH) +fi +]) + +AC_DEFUN(BASH_FUNC_POSIX_SETJMP, +[AC_REQUIRE([BASH_SYS_SIGNAL_VINTAGE]) +AC_MSG_CHECKING(for presence of POSIX-style sigsetjmp/siglongjmp) +AC_CACHE_VAL(bash_cv_func_sigsetjmp, +[AC_RUN_IFELSE([AC_LANG_SOURCE([[ +#ifdef HAVE_UNISTD_H +#include <unistd.h> +#endif +#include <sys/types.h> +#include <signal.h> +#include <setjmp.h> +#include <stdlib.h> + +int +main() +{ +#if !defined (_POSIX_VERSION) || !defined (HAVE_POSIX_SIGNALS) +exit (1); +#else + +int code; +sigset_t set, oset, nset; +sigjmp_buf xx; + +/* get the mask */ +sigemptyset(&set); +sigemptyset(&oset); + +sigprocmask(SIG_BLOCK, (sigset_t *)NULL, &oset); +/* paranoia -- make sure SIGINT is not blocked */ +sigdelset (&oset, SIGINT); +sigprocmask (SIG_SETMASK, &oset, (sigset_t *)NULL); + +/* save it */ +code = sigsetjmp(xx, 1); +if (code) +{ + sigprocmask(SIG_BLOCK, (sigset_t *)NULL, &nset); + /* could compare nset to oset here, but we just look for SIGINT */ + if (sigismember (&nset, SIGINT)) + exit(1); + exit(0); +} + +/* change it so that SIGINT is blocked */ +sigaddset(&set, SIGINT); +sigprocmask(SIG_BLOCK, &set, (sigset_t *)NULL); + +/* and siglongjmp */ +siglongjmp(xx, 10); +exit(1); +#endif +} +]])], [bash_cv_func_sigsetjmp=present], [bash_cv_func_sigsetjmp=missing], + [AC_MSG_WARN(cannot check for sigsetjmp/siglongjmp if cross-compiling -- defaulting to $bash_cv_posix_signals) + if test "$bash_cv_posix_signals" = "yes" ; then + bash_cv_func_sigsetjmp=present + else + bash_cv_func_sigsetjmp=missing + fi] +)]) +AC_MSG_RESULT($bash_cv_func_sigsetjmp) +if test $bash_cv_func_sigsetjmp = present; then +AC_DEFINE(HAVE_POSIX_SIGSETJMP) +fi +]) + +AC_DEFUN(BASH_FUNC_STRCOLL, +[AC_MSG_CHECKING(whether or not strcoll and strcmp differ) +AC_CACHE_VAL(bash_cv_func_strcoll_broken, +[AC_RUN_IFELSE([AC_LANG_SOURCE([[ +#include <stdio.h> +#if defined (HAVE_LOCALE_H) +#include <locale.h> +#endif +#include <string.h> +#include <stdlib.h> + +int +main(c, v) +int c; +char *v[]; +{ + int r1, r2; + char *deflocale, *defcoll; + +#ifdef HAVE_SETLOCALE + deflocale = setlocale(LC_ALL, ""); + defcoll = setlocale(LC_COLLATE, ""); +#endif + +#ifdef HAVE_STRCOLL + /* These two values are taken from tests/glob-test. */ + r1 = strcoll("abd", "aXd"); +#else + r1 = 0; +#endif + r2 = strcmp("abd", "aXd"); + + /* These two should both be greater than 0. It is permissible for + a system to return different values, as long as the sign is the + same. */ + + /* Exit with 1 (failure) if these two values are both > 0, since + this tests whether strcoll(3) is broken with respect to strcmp(3) + in the default locale. */ + exit (r1 > 0 && r2 > 0); +} +]])], [bash_cv_func_strcoll_broken=yes], [bash_cv_func_strcoll_broken=no], + [AC_MSG_WARN(cannot check strcoll if cross compiling -- defaulting to no) + bash_cv_func_strcoll_broken=no] +)]) +AC_MSG_RESULT($bash_cv_func_strcoll_broken) +if test $bash_cv_func_strcoll_broken = yes; then +AC_DEFINE(STRCOLL_BROKEN) +fi +]) + +AC_DEFUN(BASH_FUNC_PRINTF_A_FORMAT, +[AC_MSG_CHECKING([for printf floating point output in hex notation]) +AC_CACHE_VAL(bash_cv_printf_a_format, +[AC_RUN_IFELSE([AC_LANG_SOURCE([[ +#include <stdio.h> +#include <string.h> +#include <stdlib.h> + +int +main() +{ + double y = 0.0; + char abuf[1024]; + + sprintf(abuf, "%A", y); + exit(strchr(abuf, 'P') == (char *)0); +} +]])], [bash_cv_printf_a_format=yes], [bash_cv_printf_a_format=no], + [AC_MSG_WARN(cannot check printf if cross compiling -- defaulting to no) + bash_cv_printf_a_format=no] +)]) +AC_MSG_RESULT($bash_cv_printf_a_format) +if test $bash_cv_printf_a_format = yes; then +AC_DEFINE(HAVE_PRINTF_A_FORMAT) +fi +]) + +AC_DEFUN(BASH_STRUCT_TERMIOS_LDISC, +[ +AC_CHECK_MEMBER(struct termios.c_line, AC_DEFINE(TERMIOS_LDISC), ,[ +#include <sys/types.h> +#include <termios.h> +]) +]) + +AC_DEFUN(BASH_STRUCT_TERMIO_LDISC, +[ +AC_CHECK_MEMBER(struct termio.c_line, AC_DEFINE(TERMIO_LDISC), ,[ +#include <sys/types.h> +#include <termio.h> +]) +]) + +dnl +dnl Like AC_STRUCT_ST_BLOCKS, but doesn't muck with LIBOBJS +dnl +dnl sets bash_cv_struct_stat_st_blocks +dnl +dnl unused for now; we'll see how AC_CHECK_MEMBERS works +dnl +AC_DEFUN(BASH_STRUCT_ST_BLOCKS, +[ +AC_MSG_CHECKING([for struct stat.st_blocks]) +AC_CACHE_VAL(bash_cv_struct_stat_st_blocks, +[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ +#include <sys/types.h> +#include <sys/stat.h> +]], [[ +int +main() +{ +static struct stat a; +if (a.st_blocks) return 0; +return 0; +} +]])], [bash_cv_struct_stat_st_blocks=yes], [bash_cv_struct_stat_st_blocks=no]) +]) +AC_MSG_RESULT($bash_cv_struct_stat_st_blocks) +if test "$bash_cv_struct_stat_st_blocks" = "yes"; then +AC_DEFINE(HAVE_STRUCT_STAT_ST_BLOCKS) +fi +]) + +AC_DEFUN([BASH_CHECK_LIB_TERMCAP], +[ +if test "X$bash_cv_termcap_lib" = "X"; then +_bash_needmsg=yes +else +AC_MSG_CHECKING(which library has the termcap functions) +_bash_needmsg= +fi +AC_CACHE_VAL(bash_cv_termcap_lib, +[AC_CHECK_FUNC(tgetent, bash_cv_termcap_lib=libc, + [AC_CHECK_LIB(termcap, tgetent, bash_cv_termcap_lib=libtermcap, + [AC_CHECK_LIB(tinfo, tgetent, bash_cv_termcap_lib=libtinfo, + [AC_CHECK_LIB(curses, tgetent, bash_cv_termcap_lib=libcurses, + [AC_CHECK_LIB(ncurses, tgetent, bash_cv_termcap_lib=libncurses, + [AC_CHECK_LIB(ncursesw, tgetent, bash_cv_termcap_lib=libncursesw, + bash_cv_termcap_lib=gnutermcap)])])])])])]) +if test "X$_bash_needmsg" = "Xyes"; then +AC_MSG_CHECKING(which library has the termcap functions) +fi +AC_MSG_RESULT(using $bash_cv_termcap_lib) +if test $bash_cv_termcap_lib = gnutermcap && test -z "$prefer_curses"; then +LDFLAGS="$LDFLAGS -L./lib/termcap" +TERMCAP_LIB="./lib/termcap/libtermcap.a" +TERMCAP_DEP="./lib/termcap/libtermcap.a" +elif test $bash_cv_termcap_lib = libtermcap && test -z "$prefer_curses"; then +TERMCAP_LIB=-ltermcap +TERMCAP_DEP= +elif test $bash_cv_termcap_lib = libtinfo; then +TERMCAP_LIB=-ltinfo +TERMCAP_DEP= +elif test $bash_cv_termcap_lib = libncurses; then +TERMCAP_LIB=-lncurses +TERMCAP_DEP= +elif test $bash_cv_termcap_lib = libc; then +TERMCAP_LIB= +TERMCAP_DEP= +else +# we assume ncurses is installed somewhere the linker can find it +TERMCAP_LIB=-lncurses +TERMCAP_DEP= +fi +]) + +dnl +dnl Check for the presence of getpeername in libsocket. +dnl If libsocket is present, check for libnsl and add it to LIBS if +dnl it's there, since most systems with libsocket require linking +dnl with libnsl as well. This should only be called if getpeername +dnl was not found in libc. +dnl +dnl NOTE: IF WE FIND GETPEERNAME, WE ASSUME THAT WE HAVE BIND/CONNECT +dnl AS WELL +dnl +AC_DEFUN(BASH_CHECK_LIB_SOCKET, +[ +if test "X$bash_cv_have_socklib" = "X"; then +_bash_needmsg= +else +AC_MSG_CHECKING(for socket library) +_bash_needmsg=yes +fi +AC_CACHE_VAL(bash_cv_have_socklib, +[AC_CHECK_LIB(socket, getpeername, + bash_cv_have_socklib=yes, bash_cv_have_socklib=no, -lnsl)]) +if test "X$_bash_needmsg" = Xyes; then + AC_MSG_RESULT($bash_cv_have_socklib) + _bash_needmsg= +fi +if test $bash_cv_have_socklib = yes; then + # check for libnsl, add it to LIBS if present + if test "X$bash_cv_have_libnsl" = "X"; then + _bash_needmsg= + else + AC_MSG_CHECKING(for libnsl) + _bash_needmsg=yes + fi + AC_CACHE_VAL(bash_cv_have_libnsl, + [AC_CHECK_LIB(nsl, t_open, + bash_cv_have_libnsl=yes, bash_cv_have_libnsl=no)]) + if test "X$_bash_needmsg" = Xyes; then + AC_MSG_RESULT($bash_cv_have_libnsl) + _bash_needmsg= + fi + if test $bash_cv_have_libnsl = yes; then + LIBS="-lsocket -lnsl $LIBS" + else + LIBS="-lsocket $LIBS" + fi + AC_DEFINE(HAVE_LIBSOCKET) + AC_DEFINE(HAVE_GETPEERNAME) +fi +]) + +dnl like _AC_STRUCT_DIRENT(MEMBER) but public +AC_DEFUN(BASH_STRUCT_DIRENT, +[ +AC_REQUIRE([AC_HEADER_DIRENT]) +AC_CHECK_MEMBERS(struct dirent.$1, bash_cv_dirent_has_$1=yes, bash_cv_dirent_has_$1=no, +[[ +#include <stdio.h> +#include <sys/types.h> +#ifdef HAVE_UNISTD_H +# include <unistd.h> +#endif /* HAVE_UNISTD_H */ +#if defined(HAVE_DIRENT_H) +# include <dirent.h> +#else +# define dirent direct +# ifdef HAVE_SYS_NDIR_H +# include <sys/ndir.h> +# endif /* SYSNDIR */ +# ifdef HAVE_SYS_DIR_H +# include <sys/dir.h> +# endif /* SYSDIR */ +# ifdef HAVE_NDIR_H +# include <ndir.h> +# endif +#endif /* HAVE_DIRENT_H */ +]]) +]) + +AC_DEFUN(BASH_STRUCT_DIRENT_D_INO, +[AC_REQUIRE([AC_HEADER_DIRENT]) +AC_MSG_CHECKING(for struct dirent.d_ino) +AC_CACHE_VAL(bash_cv_dirent_has_d_ino, [BASH_STRUCT_DIRENT([d_ino])]) +AC_MSG_RESULT($bash_cv_dirent_has_d_ino) +if test $bash_cv_dirent_has_d_ino = yes; then +AC_DEFINE(HAVE_STRUCT_DIRENT_D_INO) +fi +]) + +AC_DEFUN(BASH_STRUCT_DIRENT_D_FILENO, +[AC_REQUIRE([AC_HEADER_DIRENT]) +AC_MSG_CHECKING(for struct dirent.d_fileno) +AC_CACHE_VAL(bash_cv_dirent_has_d_fileno, [BASH_STRUCT_DIRENT([d_fileno])]) +AC_MSG_RESULT($bash_cv_dirent_has_d_fileno) +if test $bash_cv_dirent_has_d_fileno = yes; then +AC_DEFINE(HAVE_STRUCT_DIRENT_D_FILENO) +fi +]) + +AC_DEFUN(BASH_STRUCT_DIRENT_D_NAMLEN, +[AC_REQUIRE([AC_HEADER_DIRENT]) +AC_MSG_CHECKING(for struct dirent.d_namlen) +AC_CACHE_VAL(bash_cv_dirent_has_d_namlen, [BASH_STRUCT_DIRENT([d_namlen])]) +AC_MSG_RESULT($bash_cv_dirent_has_d_namlen) +if test $bash_cv_dirent_has_d_namlen = yes; then +AC_DEFINE(HAVE_STRUCT_DIRENT_D_NAMLEN) +fi +]) + +AC_DEFUN(BASH_STRUCT_TIMEVAL, +[AC_MSG_CHECKING(for struct timeval in sys/time.h and time.h) +AC_CACHE_VAL(bash_cv_struct_timeval, +[AC_COMPILE_IFELSE( + [AC_LANG_PROGRAM( + [[#if HAVE_SYS_TIME_H + #include <sys/time.h> + #endif + #include <time.h> + ]], + [[static struct timeval x; x.tv_sec = x.tv_usec;]] + )], + bash_cv_struct_timeval=yes, + bash_cv_struct_timeval=no) +]) +AC_MSG_RESULT($bash_cv_struct_timeval) +if test $bash_cv_struct_timeval = yes; then + AC_DEFINE(HAVE_TIMEVAL) +fi +]) + +AC_DEFUN(BASH_STRUCT_TIMEZONE, +[AC_MSG_CHECKING(for struct timezone in sys/time.h and time.h) +AC_CACHE_VAL(bash_cv_struct_timezone, +[ +AC_EGREP_HEADER(struct timezone, sys/time.h, + bash_cv_struct_timezone=yes, + AC_EGREP_HEADER(struct timezone, time.h, + bash_cv_struct_timezone=yes, + bash_cv_struct_timezone=no)) +]) +AC_MSG_RESULT($bash_cv_struct_timezone) +if test $bash_cv_struct_timezone = yes; then + AC_DEFINE(HAVE_STRUCT_TIMEZONE) +fi +]) + +AC_DEFUN(BASH_CHECK_WINSIZE_IOCTL, +[AC_CACHE_VAL(bash_cv_struct_winsize_ioctl, +[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ +#include <sys/types.h> +#include <sys/ioctl.h> +]], +[[ +struct winsize x; +if (sizeof (x) > 0) return (0); +]] )], [bash_cv_struct_winsize_ioctl=yes], [bash_cv_struct_winsize_ioctl=no]) +]) +]) + +AC_DEFUN(BASH_CHECK_WINSIZE_TERMIOS, +[AC_CACHE_VAL(bash_cv_struct_winsize_termios, +[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ +#include <sys/types.h> +#include <sys/termios.h> +]], +[[ +struct winsize x; +if (sizeof (x) > 0) return (0); +]] )], [bash_cv_struct_winsize_termios=yes], [bash_cv_struct_winsize_termios=no]) +]) +]) + +AC_DEFUN(BASH_STRUCT_WINSIZE, +[AC_MSG_CHECKING(for struct winsize in sys/ioctl.h and termios.h) +AC_CACHE_VAL(bash_cv_struct_winsize_header, +[ +BASH_CHECK_WINSIZE_IOCTL +BASH_CHECK_WINSIZE_TERMIOS + +if test $bash_cv_struct_winsize_ioctl = yes; then + bash_cv_struct_winsize_header=ioctl_h +elif test $bash_cv_struct_winsize_termios = yes; then + bash_cv_struct_winsize_header=termios_h +else + bash_cv_struct_winsize_header=other +fi +]) +if test $bash_cv_struct_winsize_header = ioctl_h; then + AC_MSG_RESULT(sys/ioctl.h) + AC_DEFINE(STRUCT_WINSIZE_IN_SYS_IOCTL) +elif test $bash_cv_struct_winsize_header = termios_h; then + AC_MSG_RESULT(termios.h) + AC_DEFINE(STRUCT_WINSIZE_IN_TERMIOS) +else + AC_MSG_RESULT(not found) +fi +]) + +AC_DEFUN(BASH_HAVE_POSIX_SIGNALS, +[AC_CACHE_VAL(bash_cv_posix_signals, +[AC_LINK_IFELSE([AC_LANG_PROGRAM([[ +#include <signal.h> +]], [[ + sigset_t ss; + struct sigaction sa; + sigemptyset(&ss); sigsuspend(&ss); + sigaction(SIGINT, &sa, (struct sigaction *) 0); + sigprocmask(SIG_BLOCK, &ss, (sigset_t *) 0); +]] )], +[bash_cv_posix_signals=yes], [bash_cv_posix_signals=no] +)]) +]) + +AC_DEFUN(BASH_HAVE_BSD_SIGNALS, +[AC_CACHE_VAL(bash_cv_bsd_signals, +[AC_LINK_IFELSE([AC_LANG_PROGRAM([[ +#include <signal.h> +]], [[ +int mask = sigmask(SIGINT); +sigsetmask(mask); sigblock(mask); sigpause(mask); +]] )], +[bash_cv_bsd_signals=yes], [bash_cv_bsd_signals=no] +)]) +]) + +AC_DEFUN(BASH_HAVE_SYSV_SIGNALS, +[AC_CACHE_VAL(bash_cv_sysv_signals, +[AC_LINK_IFELSE([AC_LANG_PROGRAM([[ +#include <signal.h> +void foo() { } +]], [[ +int mask = sigmask(SIGINT); +sigset(SIGINT, foo); sigrelse(SIGINT); +sighold(SIGINT); sigpause(SIGINT); +]] )], +[bash_cv_sysv_signals=yes], [bash_cv_sysv_signals=no] +)]) +]) + +dnl Check type of signal routines (posix, 4.2bsd, 4.1bsd or v7) +AC_DEFUN(BASH_SYS_SIGNAL_VINTAGE, +[AC_MSG_CHECKING(for type of signal functions) +AC_CACHE_VAL(bash_cv_signal_vintage, +[ +BASH_HAVE_POSIX_SIGNALS +if test $bash_cv_posix_signals = yes; then + bash_cv_signal_vintage=posix +else + BASH_HAVE_BSD_SIGNALS + if test $bash_cv_bsd_signals = yes; then + bash_cv_signal_vintage=4.2bsd + else + BASH_HAVE_SYSV_SIGNALS + if test $bash_cv_sysv_signals = yes; then + bash_cv_signal_vintage=svr3 + else + bash_cv_signal_vintage=v7 + fi + fi +fi +]) +AC_MSG_RESULT($bash_cv_signal_vintage) +if test "$bash_cv_signal_vintage" = posix; then +AC_DEFINE(HAVE_POSIX_SIGNALS) +elif test "$bash_cv_signal_vintage" = "4.2bsd"; then +AC_DEFINE(HAVE_BSD_SIGNALS) +elif test "$bash_cv_signal_vintage" = svr3; then +AC_DEFINE(HAVE_USG_SIGHOLD) +fi +]) + +dnl Check if the pgrp of setpgrp() can't be the pid of a zombie process. +AC_DEFUN(BASH_SYS_PGRP_SYNC, +[AC_REQUIRE([AC_FUNC_GETPGRP]) +AC_MSG_CHECKING(whether pgrps need synchronization) +AC_CACHE_VAL(bash_cv_pgrp_pipe, +[AC_RUN_IFELSE([AC_LANG_SOURCE([[ +#ifdef HAVE_UNISTD_H +# include <unistd.h> +#endif +#ifdef HAVE_SYS_WAIT_H +# include <sys/wait.h> +#endif +#include <stdlib.h> +int +main() +{ +# ifdef GETPGRP_VOID +# define getpgID() getpgrp() +# else +# define getpgID() getpgrp(0) +# define setpgid(x,y) setpgrp(x,y) +# endif + int pid1, pid2, fds[2]; + int status; + char ok; + + switch (pid1 = fork()) { + case -1: + exit(1); + case 0: + setpgid(0, getpid()); + exit(0); + } + setpgid(pid1, pid1); + + sleep(2); /* let first child die */ + + if (pipe(fds) < 0) + exit(2); + + switch (pid2 = fork()) { + case -1: + exit(3); + case 0: + setpgid(0, pid1); + ok = getpgID() == pid1; + write(fds[1], &ok, 1); + exit(0); + } + setpgid(pid2, pid1); + + close(fds[1]); + if (read(fds[0], &ok, 1) != 1) + exit(4); + wait(&status); + wait(&status); + exit(ok ? 0 : 5); +} +]])], [bash_cv_pgrp_pipe=no], [bash_cv_pgrp_pipe=yes], + [AC_MSG_WARN(cannot check pgrp synchronization if cross compiling -- defaulting to no) + bash_cv_pgrp_pipe=no] +)]) +AC_MSG_RESULT($bash_cv_pgrp_pipe) +if test $bash_cv_pgrp_pipe = yes; then +AC_DEFINE(PGRP_PIPE) +fi +]) + +AC_DEFUN(BASH_SYS_REINSTALL_SIGHANDLERS, +[AC_REQUIRE([BASH_SYS_SIGNAL_VINTAGE]) +AC_MSG_CHECKING([if signal handlers must be reinstalled when invoked]) +AC_CACHE_VAL(bash_cv_must_reinstall_sighandlers, +[AC_RUN_IFELSE([AC_LANG_SOURCE([[ +#include <signal.h> +#ifdef HAVE_UNISTD_H +#include <unistd.h> +#endif +#include <stdlib.h> + +typedef void sigfunc(); + +volatile int nsigint; + +#ifdef HAVE_POSIX_SIGNALS +sigfunc * +set_signal_handler(sig, handler) + int sig; + sigfunc *handler; +{ + struct sigaction act, oact; + act.sa_handler = handler; + act.sa_flags = 0; + sigemptyset (&act.sa_mask); + sigemptyset (&oact.sa_mask); + sigaction (sig, &act, &oact); + return (oact.sa_handler); +} +#else +#define set_signal_handler(s, h) signal(s, h) +#endif + +void +sigint(s) +int s; +{ + nsigint++; +} + +int +main() +{ + nsigint = 0; + set_signal_handler(SIGINT, sigint); + kill((int)getpid(), SIGINT); + kill((int)getpid(), SIGINT); + exit(nsigint != 2); +} +]])], [bash_cv_must_reinstall_sighandlers=no], [bash_cv_must_reinstall_sighandlers=yes], + [AC_MSG_WARN(cannot check signal handling if cross compiling -- defaulting to no) + bash_cv_must_reinstall_sighandlers=no] +)]) +AC_MSG_RESULT($bash_cv_must_reinstall_sighandlers) +if test $bash_cv_must_reinstall_sighandlers = yes; then +AC_DEFINE(MUST_REINSTALL_SIGHANDLERS) +fi +]) + +dnl check that some necessary job control definitions are present +AC_DEFUN(BASH_SYS_JOB_CONTROL_MISSING, +[AC_REQUIRE([BASH_SYS_SIGNAL_VINTAGE]) +AC_MSG_CHECKING(for presence of necessary job control definitions) +AC_CACHE_VAL(bash_cv_job_control_missing, +[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ +#include <sys/types.h> +#ifdef HAVE_SYS_WAIT_H +#include <sys/wait.h> +#endif +#ifdef HAVE_UNISTD_H +#include <unistd.h> +#endif +#include <signal.h> + +/* add more tests in here as appropriate */ + +/* signal type */ +#if !defined (HAVE_POSIX_SIGNALS) && !defined (HAVE_BSD_SIGNALS) +#error +#endif + +/* signals and tty control. */ +#if !defined (SIGTSTP) || !defined (SIGSTOP) || !defined (SIGCONT) +#error +#endif + +/* process control */ +#if !defined (WNOHANG) || !defined (WUNTRACED) +#error +#endif + +/* Posix systems have tcgetpgrp and waitpid. */ +#if defined (_POSIX_VERSION) && !defined (HAVE_TCGETPGRP) +#error +#endif + +#if defined (_POSIX_VERSION) && !defined (HAVE_WAITPID) +#error +#endif + +/* Other systems have TIOCSPGRP/TIOCGPRGP and wait3. */ +#if !defined (_POSIX_VERSION) && !defined (HAVE_WAIT3) +#error +#endif + +]], [[ int x; ]] )], +[bash_cv_job_control_missing=present], [bash_cv_job_control_missing=missing] +)]) +AC_MSG_RESULT($bash_cv_job_control_missing) +if test $bash_cv_job_control_missing = missing; then +AC_DEFINE(JOB_CONTROL_MISSING) +fi +]) + +dnl check whether named pipes are present +dnl this requires a previous check for mkfifo, but that is awkward to specify +AC_DEFUN(BASH_SYS_NAMED_PIPES, +[AC_MSG_CHECKING(for presence of named pipes) +AC_CACHE_VAL(bash_cv_sys_named_pipes, +[AC_RUN_IFELSE([AC_LANG_SOURCE([[ +#include <sys/types.h> +#include <sys/stat.h> +#ifdef HAVE_UNISTD_H +#include <unistd.h> +#endif +#include <stdio.h> +#include <stdlib.h> + +/* Add more tests in here as appropriate. */ +int +main() +{ +int fd, err; + +#if defined (HAVE_MKFIFO) +exit (0); +#endif + +#if !defined (S_IFIFO) && (defined (_POSIX_VERSION) && !defined (S_ISFIFO)) +exit (1); +#endif + +#if defined (NeXT) +exit (1); +#endif +err = mkdir("bash-aclocal", 0700); +if (err < 0) { + perror ("mkdir"); + exit(1); +} +fd = mknod ("bash-aclocal/sh-np-autoconf", 0666 | S_IFIFO, 0); +if (fd == -1) { + rmdir ("bash-aclocal"); + exit (1); +} +close(fd); +unlink ("bash-aclocal/sh-np-autoconf"); +rmdir ("bash-aclocal"); +exit(0); +} +]])], [bash_cv_sys_named_pipes=present], [bash_cv_sys_named_pipes=missing], + [AC_MSG_WARN(cannot check for named pipes if cross-compiling -- defaulting to missing) + bash_cv_sys_named_pipes=missing] +)]) +AC_MSG_RESULT($bash_cv_sys_named_pipes) +if test $bash_cv_sys_named_pipes = missing; then +AC_DEFINE(NAMED_PIPES_MISSING) +fi +]) + +AC_DEFUN(BASH_SYS_DEFAULT_MAIL_DIR, +[AC_MSG_CHECKING(for default mail directory) +AC_CACHE_VAL(bash_cv_mail_dir, +[if test -d /var/mail; then + bash_cv_mail_dir=/var/mail + elif test -d /var/spool/mail; then + bash_cv_mail_dir=/var/spool/mail + elif test -d /usr/mail; then + bash_cv_mail_dir=/usr/mail + elif test -d /usr/spool/mail; then + bash_cv_mail_dir=/usr/spool/mail + else + bash_cv_mail_dir=unknown + fi +]) +AC_MSG_RESULT($bash_cv_mail_dir) +AC_DEFINE_UNQUOTED(DEFAULT_MAIL_DIRECTORY, "$bash_cv_mail_dir") +]) + +AC_DEFUN(BASH_HAVE_TIOCGWINSZ, +[AC_MSG_CHECKING(for TIOCGWINSZ in sys/ioctl.h) +AC_CACHE_VAL(bash_cv_tiocgwinsz_in_ioctl, +[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ +#include <sys/types.h> +#include <sys/ioctl.h>]], [[int x = TIOCGWINSZ;]] )], + [bash_cv_tiocgwinsz_in_ioctl=yes], [bash_cv_tiocgwinsz_in_ioctl=no] +)]) +AC_MSG_RESULT($bash_cv_tiocgwinsz_in_ioctl) +if test $bash_cv_tiocgwinsz_in_ioctl = yes; then +AC_DEFINE(GWINSZ_IN_SYS_IOCTL) +fi +]) + +AC_DEFUN(BASH_HAVE_TIOCSTAT, +[AC_MSG_CHECKING(for TIOCSTAT in sys/ioctl.h) +AC_CACHE_VAL(bash_cv_tiocstat_in_ioctl, +[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ +#include <sys/types.h> +#include <sys/ioctl.h>]], [[int x = TIOCSTAT;]] )], + [bash_cv_tiocstat_in_ioctl=yes], [bash_cv_tiocstat_in_ioctl=no] +)]) +AC_MSG_RESULT($bash_cv_tiocstat_in_ioctl) +if test $bash_cv_tiocstat_in_ioctl = yes; then +AC_DEFINE(TIOCSTAT_IN_SYS_IOCTL) +fi +]) + +AC_DEFUN(BASH_HAVE_FIONREAD, +[AC_MSG_CHECKING(for FIONREAD in sys/ioctl.h) +AC_CACHE_VAL(bash_cv_fionread_in_ioctl, +[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ +#include <sys/types.h> +#include <sys/ioctl.h>]], [[int x = FIONREAD;]] )], + [bash_cv_fionread_in_ioctl=yes], [bash_cv_fionread_in_ioctl=no] +)]) +AC_MSG_RESULT($bash_cv_fionread_in_ioctl) +if test $bash_cv_fionread_in_ioctl = yes; then +AC_DEFINE(FIONREAD_IN_SYS_IOCTL) +fi +]) + +dnl +dnl See if speed_t is declared in <sys/types.h>. Some versions of linux +dnl require a definition of speed_t each time <termcap.h> is included, +dnl but you can only get speed_t if you include <termios.h> (on some +dnl versions) or <sys/types.h> (on others). +dnl +AC_DEFUN(BASH_CHECK_SPEED_T, +[AC_MSG_CHECKING(for speed_t in sys/types.h) +AC_CACHE_VAL(bash_cv_speed_t_in_sys_types, +[AC_COMPILE_IFELSE( + [AC_LANG_PROGRAM( + [[#include <sys/types.h>]], + [[speed_t x;]])], + [bash_cv_speed_t_in_sys_types=yes],[bash_cv_speed_t_in_sys_types=no])]) +AC_MSG_RESULT($bash_cv_speed_t_in_sys_types) +if test $bash_cv_speed_t_in_sys_types = yes; then +AC_DEFINE(SPEED_T_IN_SYS_TYPES) +fi +]) + +AC_DEFUN(BASH_CHECK_GETPW_FUNCS, +[AC_MSG_CHECKING(whether getpw functions are declared in pwd.h) +AC_CACHE_VAL(bash_cv_getpw_declared, +[AC_EGREP_CPP(getpwuid, +[ +#include <sys/types.h> +#ifdef HAVE_UNISTD_H +# include <unistd.h> +#endif +#include <pwd.h> +], +bash_cv_getpw_declared=yes,bash_cv_getpw_declared=no)]) +AC_MSG_RESULT($bash_cv_getpw_declared) +if test $bash_cv_getpw_declared = yes; then +AC_DEFINE(HAVE_GETPW_DECLS) +fi +]) + +AC_DEFUN(BASH_CHECK_DEV_FD, +[AC_MSG_CHECKING(whether /dev/fd is available) +AC_CACHE_VAL(bash_cv_dev_fd, +[bash_cv_dev_fd="" +if test -d /dev/fd && (exec test -r /dev/fd/0 < /dev/null) ; then +# check for systems like FreeBSD 5 that only provide /dev/fd/[012] + if (exec test -r /dev/fd/3 3</dev/null) ; then + bash_cv_dev_fd=standard + else + bash_cv_dev_fd=absent + fi +fi +if test -z "$bash_cv_dev_fd" ; then + if test -d /proc/self/fd && (exec test -r /proc/self/fd/0 < /dev/null) ; then + bash_cv_dev_fd=whacky + else + bash_cv_dev_fd=absent + fi +fi +]) +AC_MSG_RESULT($bash_cv_dev_fd) +if test $bash_cv_dev_fd = "standard"; then + AC_DEFINE(HAVE_DEV_FD) + AC_DEFINE(DEV_FD_PREFIX, "/dev/fd/") +elif test $bash_cv_dev_fd = "whacky"; then + AC_DEFINE(HAVE_DEV_FD) + AC_DEFINE(DEV_FD_PREFIX, "/proc/self/fd/") +fi +]) + +AC_DEFUN(BASH_CHECK_DEV_STDIN, +[AC_MSG_CHECKING(whether /dev/stdin stdout stderr are available) +AC_CACHE_VAL(bash_cv_dev_stdin, +[if (exec test -r /dev/stdin < /dev/null) ; then + bash_cv_dev_stdin=present + else + bash_cv_dev_stdin=absent + fi +]) +AC_MSG_RESULT($bash_cv_dev_stdin) +if test $bash_cv_dev_stdin = "present"; then + AC_DEFINE(HAVE_DEV_STDIN) +fi +]) + + +AC_DEFUN(BASH_CHECK_RLIMIT, +[AC_CACHE_VAL(bash_cv_rlimit, +[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ +#include <sys/types.h> +#include <sys/resource.h> +]], +[[ + int f; + f = RLIMIT_DATA; +]] )], +[bash_cv_rlimit=yes], [bash_cv_rlimit=no] +)]) +]) + +dnl +dnl Check if HPUX needs _KERNEL defined for RLIMIT_* definitions +dnl +AC_DEFUN(BASH_CHECK_KERNEL_RLIMIT, +[AC_MSG_CHECKING([whether $host_os needs _KERNEL for RLIMIT defines]) +AC_CACHE_VAL(bash_cv_kernel_rlimit, +[BASH_CHECK_RLIMIT +if test $bash_cv_rlimit = no; then +AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ +#include <sys/types.h> +#define _KERNEL +#include <sys/resource.h> +#undef _KERNEL +]], +[[ + int f; + f = RLIMIT_DATA; +]] )], [bash_cv_kernel_rlimit=yes], [bash_cv_kernel_rlimit=no] ) +fi +]) +AC_MSG_RESULT($bash_cv_kernel_rlimit) +if test $bash_cv_kernel_rlimit = yes; then +AC_DEFINE(RLIMIT_NEEDS_KERNEL) +fi +]) + +dnl +dnl Check for 64-bit off_t -- used for malloc alignment +dnl +dnl C does not allow duplicate case labels, so the compile will fail if +dnl sizeof(off_t) is > 4. +dnl +AC_DEFUN(BASH_CHECK_OFF_T_64, +[AC_CACHE_CHECK(for 64-bit off_t, bash_cv_off_t_64, +AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ +#ifdef HAVE_UNISTD_H +#include <unistd.h> +#endif +#include <sys/types.h> +]],[[ +switch (0) case 0: case (sizeof (off_t) <= 4):; +]] )], [bash_cv_off_t_64=no], [bash_cv_off_t_64=yes] +)) +if test $bash_cv_off_t_64 = yes; then + AC_DEFINE(HAVE_OFF_T_64) +fi]) + +AC_DEFUN(BASH_CHECK_RTSIGS, +[AC_MSG_CHECKING(for unusable real-time signals due to large values) +AC_CACHE_VAL(bash_cv_unusable_rtsigs, +[AC_RUN_IFELSE([AC_LANG_SOURCE([[ +#include <sys/types.h> +#include <signal.h> +#include <stdlib.h> + +#ifndef NSIG +# define NSIG 64 +#endif + +int +main () +{ + int n_sigs = 2 * NSIG; +#ifdef SIGRTMIN + int rtmin = SIGRTMIN; +#else + int rtmin = 0; +#endif + + exit(rtmin < n_sigs); +} +]])], [bash_cv_unusable_rtsigs=yes], [bash_cv_unusable_rtsigs=no], + [AC_MSG_WARN(cannot check real-time signals if cross compiling -- defaulting to yes) + bash_cv_unusable_rtsigs=yes] +)]) +AC_MSG_RESULT($bash_cv_unusable_rtsigs) +if test $bash_cv_unusable_rtsigs = yes; then +AC_DEFINE(UNUSABLE_RT_SIGNALS) +fi +]) + +dnl +dnl check for availability of multibyte characters and functions +dnl +dnl geez, I wish I didn't have to check for all of this stuff separately +dnl +AC_DEFUN(BASH_CHECK_MULTIBYTE, +[ +AC_CHECK_HEADERS(wctype.h) +AC_CHECK_HEADERS(wchar.h) +AC_CHECK_HEADERS(langinfo.h) + +AC_CHECK_HEADERS(mbstr.h) + +AC_CHECK_FUNC(mbrlen, AC_DEFINE(HAVE_MBRLEN)) +AC_CHECK_FUNC(mbscasecmp, AC_DEFINE(HAVE_MBSCMP)) +AC_CHECK_FUNC(mbscmp, AC_DEFINE(HAVE_MBSCMP)) +AC_CHECK_FUNC(mbsnrtowcs, AC_DEFINE(HAVE_MBSNRTOWCS)) +AC_CHECK_FUNC(mbsrtowcs, AC_DEFINE(HAVE_MBSRTOWCS)) + +AC_REPLACE_FUNCS(mbschr) + +AC_CHECK_FUNC(wcrtomb, AC_DEFINE(HAVE_WCRTOMB)) +AC_CHECK_FUNC(wcscoll, AC_DEFINE(HAVE_WCSCOLL)) +AC_CHECK_FUNC(wcsdup, AC_DEFINE(HAVE_WCSDUP)) +AC_CHECK_FUNC(wcwidth, AC_DEFINE(HAVE_WCWIDTH)) +AC_CHECK_FUNC(wctype, AC_DEFINE(HAVE_WCTYPE)) + +AC_REPLACE_FUNCS(wcswidth) + +dnl checks for both mbrtowc and mbstate_t +AC_FUNC_MBRTOWC +if test $ac_cv_func_mbrtowc = yes; then + AC_DEFINE(HAVE_MBSTATE_T) +fi + +AC_CHECK_FUNCS(iswlower iswupper towlower towupper iswctype) + +AC_REQUIRE([AM_LANGINFO_CODESET]) + +dnl check for wchar_t in <wchar.h> +AC_CACHE_CHECK([for wchar_t in wchar.h], bash_cv_type_wchar_t, +[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([ +[#include <wchar.h>]], +[[ + wchar_t foo; + foo = 0; +]] )], [bash_cv_type_wchar_t=yes], [bash_cv_type_wchar_t=no] +)]) +if test $bash_cv_type_wchar_t = yes; then + AC_DEFINE(HAVE_WCHAR_T, 1, [systems should define this type here]) +fi + +dnl check for wctype_t in <wctype.h> +AC_CACHE_CHECK([for wctype_t in wctype.h], bash_cv_type_wctype_t, +[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([ +[#include <wctype.h>]], +[[ + wctype_t foo; + foo = 0; +]] )], [bash_cv_type_wctype_t=yes], [bash_cv_type_wctype_t=no] +)]) +if test $bash_cv_type_wctype_t = yes; then + AC_DEFINE(HAVE_WCTYPE_T, 1, [systems should define this type here]) +fi + +dnl check for wint_t in <wctype.h> +AC_CACHE_CHECK([for wint_t in wctype.h], bash_cv_type_wint_t, +[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([ +[#include <wctype.h>]], +[[ + wint_t foo; + foo = 0; +]] )], [bash_cv_type_wint_t=yes], [bash_cv_type_wint_t=no] +)]) +if test $bash_cv_type_wint_t = yes; then + AC_DEFINE(HAVE_WINT_T, 1, [systems should define this type here]) +fi + +dnl check for broken wcwidth +AC_CACHE_CHECK([for wcwidth broken with unicode combining characters], +bash_cv_wcwidth_broken, +[AC_RUN_IFELSE([AC_LANG_SOURCE([[ +#include <unistd.h> +#include <stdlib.h> +#include <stdio.h> + +#include <locale.h> +#include <wchar.h> + +int +main(c, v) +int c; +char **v; +{ + int w; + + setlocale(LC_ALL, "en_US.UTF-8"); + w = wcwidth (0x0301); + exit (w == 0); /* exit 0 if wcwidth broken */ +} +]])], [bash_cv_wcwidth_broken=yes], [bash_cv_wcwidth_broken=no], + [bash_cv_wcwidth_broken=no] +)]) +if test "$bash_cv_wcwidth_broken" = yes; then + AC_DEFINE(WCWIDTH_BROKEN, 1, [wcwidth is usually not broken]) +fi + +if test "$am_cv_func_iconv" = yes; then + OLDLIBS="$LIBS" + LIBS="$LIBS $LIBINTL $LIBICONV" + AC_CHECK_FUNCS(locale_charset) + LIBS="$OLDLIBS" +fi + +AC_CHECK_SIZEOF(wchar_t, 4) + +]) + +dnl need: prefix exec_prefix libdir includedir CC TERMCAP_LIB +dnl require: +dnl AC_PROG_CC +dnl BASH_CHECK_LIB_TERMCAP + +AC_DEFUN([RL_LIB_READLINE_VERSION], +[ +AC_REQUIRE([BASH_CHECK_LIB_TERMCAP]) + +AC_MSG_CHECKING([version of installed readline library]) + +# What a pain in the ass this is. + +# save cpp and ld options +_save_CFLAGS="$CFLAGS" +_save_LDFLAGS="$LDFLAGS" +_save_LIBS="$LIBS" + +# Don't set ac_cv_rl_prefix if the caller has already assigned a value. This +# allows the caller to do something like $_rl_prefix=$withval if the user +# specifies --with-installed-readline=PREFIX as an argument to configure + +if test -z "$ac_cv_rl_prefix"; then +test "x$prefix" = xNONE && ac_cv_rl_prefix=$ac_default_prefix || ac_cv_rl_prefix=${prefix} +fi + +eval ac_cv_rl_includedir=${ac_cv_rl_prefix}/include +eval ac_cv_rl_libdir=${ac_cv_rl_prefix}/lib + +LIBS="$LIBS -lreadline ${TERMCAP_LIB}" +CFLAGS="$CFLAGS -I${ac_cv_rl_includedir}" +LDFLAGS="$LDFLAGS -L${ac_cv_rl_libdir}" + +AC_CACHE_VAL(ac_cv_rl_version, +[AC_RUN_IFELSE([AC_LANG_SOURCE([[ +#include <stdio.h> +#include <readline/readline.h> +#include <stdlib.h> + +extern int rl_gnu_readline_p; + +int +main() +{ + FILE *fp; + fp = fopen("conftest.rlv", "w"); + if (fp == 0) + exit(1); + if (rl_gnu_readline_p != 1) + fprintf(fp, "0.0\n"); + else + fprintf(fp, "%s\n", rl_library_version ? rl_library_version : "0.0"); + fclose(fp); + exit(0); +} +]])], +[ac_cv_rl_version=`cat conftest.rlv`], +[ac_cv_rl_version='0.0'], +[ac_cv_rl_version='8.0'] +)]) + +CFLAGS="$_save_CFLAGS" +LDFLAGS="$_save_LDFLAGS" +LIBS="$_save_LIBS" + +RL_MAJOR=0 +RL_MINOR=0 + +# ( +case "$ac_cv_rl_version" in +2*|3*|4*|5*|6*|7*|8*|9*) + RL_MAJOR=`echo $ac_cv_rl_version | sed 's:\..*$::'` + RL_MINOR=`echo $ac_cv_rl_version | sed -e 's:^.*\.::' -e 's:[[a-zA-Z]]*$::'` + ;; +esac + +# ((( +case $RL_MAJOR in +[[0-9][0-9]]) _RL_MAJOR=$RL_MAJOR ;; +[[0-9]]) _RL_MAJOR=0$RL_MAJOR ;; +*) _RL_MAJOR=00 ;; +esac + +# ((( +case $RL_MINOR in +[[0-9][0-9]]) _RL_MINOR=$RL_MINOR ;; +[[0-9]]) _RL_MINOR=0$RL_MINOR ;; +*) _RL_MINOR=00 ;; +esac + +RL_VERSION="0x${_RL_MAJOR}${_RL_MINOR}" + +# Readline versions greater than 4.2 have these defines in readline.h + +if test $ac_cv_rl_version = '0.0' ; then + AC_MSG_WARN([Could not test version of installed readline library.]) +elif test $RL_MAJOR -gt 4 || { test $RL_MAJOR = 4 && test $RL_MINOR -gt 2 ; } ; then + # set these for use by the caller + RL_PREFIX=$ac_cv_rl_prefix + RL_LIBDIR=$ac_cv_rl_libdir + RL_INCLUDEDIR=$ac_cv_rl_includedir + AC_MSG_RESULT($ac_cv_rl_version) +else + +AC_DEFINE_UNQUOTED(RL_READLINE_VERSION, $RL_VERSION, [encoded version of the installed readline library]) +AC_DEFINE_UNQUOTED(RL_VERSION_MAJOR, $RL_MAJOR, [major version of installed readline library]) +AC_DEFINE_UNQUOTED(RL_VERSION_MINOR, $RL_MINOR, [minor version of installed readline library]) + +AC_SUBST(RL_VERSION) +AC_SUBST(RL_MAJOR) +AC_SUBST(RL_MINOR) + +# set these for use by the caller +RL_PREFIX=$ac_cv_rl_prefix +RL_LIBDIR=$ac_cv_rl_libdir +RL_INCLUDEDIR=$ac_cv_rl_includedir + +AC_MSG_RESULT($ac_cv_rl_version) + +fi +]) + +AC_DEFUN(BASH_CHECK_WCONTINUED, +[ +AC_MSG_CHECKING(whether WCONTINUED flag to waitpid is unavailable or available but broken) +AC_CACHE_VAL(bash_cv_wcontinued_broken, +[AC_RUN_IFELSE([AC_LANG_SOURCE([[ +#include <sys/types.h> +#include <sys/wait.h> +#include <unistd.h> +#include <errno.h> +#include <stdlib.h> + +#ifndef errno +extern int errno; +#endif +int +main() +{ + int x; + + x = waitpid(-1, (int *)0, WNOHANG|WCONTINUED); + if (x == -1 && errno == EINVAL) + exit (1); + else + exit (0); +} +]])], [bash_cv_wcontinued_broken=no], [bash_cv_wcontinued_broken=yes], + [AC_MSG_WARN(cannot check WCONTINUED if cross compiling -- defaulting to no) + bash_cv_wcontinued_broken=no] +)]) +AC_MSG_RESULT($bash_cv_wcontinued_broken) +if test $bash_cv_wcontinued_broken = yes; then +AC_DEFINE(WCONTINUED_BROKEN) +fi +]) + +dnl +dnl tests added for bashdb +dnl + + +AC_DEFUN([AM_PATH_LISPDIR], + [AC_ARG_WITH(lispdir, AS_HELP_STRING([--with-lispdir], [override the default lisp directory]), + [ lispdir="$withval" + AC_MSG_CHECKING([where .elc files should go]) + AC_MSG_RESULT([$lispdir])], + [ + # If set to t, that means we are running in a shell under Emacs. + # If you have an Emacs named "t", then use the full path. + test x"$EMACS" = xt && EMACS= + AC_CHECK_PROGS(EMACS, emacs xemacs, no) + if test $EMACS != "no"; then + if test x${lispdir+set} != xset; then + AC_CACHE_CHECK([where .elc files should go], [am_cv_lispdir], [dnl + am_cv_lispdir=`$EMACS -batch -q -eval '(while load-path (princ (concat (car load-path) "\n")) (setq load-path (cdr load-path)))' | sed -n -e 's,/$,,' -e '/.*\/lib\/\(x\?emacs\/site-lisp\)$/{s,,${libdir}/\1,;p;q;}' -e '/.*\/share\/\(x\?emacs\/site-lisp\)$/{s,,${datadir}/\1,;p;q;}'` + if test -z "$am_cv_lispdir"; then + am_cv_lispdir='${datadir}/emacs/site-lisp' + fi + ]) + lispdir="$am_cv_lispdir" + fi + fi + ]) + AC_SUBST(lispdir) +]) + +dnl From gnulib +AC_DEFUN([BASH_FUNC_FPURGE], +[ + AC_CHECK_FUNCS_ONCE([fpurge]) + AC_CHECK_FUNCS_ONCE([__fpurge]) + AC_CHECK_DECLS([fpurge], , , [#include <stdio.h>]) +]) + +AC_DEFUN([BASH_FUNC_SNPRINTF], +[ + AC_CHECK_FUNCS_ONCE([snprintf]) + if test X$ac_cv_func_snprintf = Xyes; then + AC_CACHE_CHECK([for standard-conformant snprintf], [bash_cv_func_snprintf], + [AC_RUN_IFELSE([AC_LANG_SOURCE([[ +#include <stdio.h> +#include <stdlib.h> + +int +main() +{ + int n; + n = snprintf (0, 0, "%s", "0123456"); + exit(n != 7); +} +]])], [bash_cv_func_snprintf=yes], [bash_cv_func_snprintf=no], + [AC_MSG_WARN([cannot check standard snprintf if cross-compiling]) + bash_cv_func_snprintf=yes] +)]) + if test $bash_cv_func_snprintf = no; then + ac_cv_func_snprintf=no + fi + fi + if test $ac_cv_func_snprintf = no; then + AC_DEFINE(HAVE_SNPRINTF, 0, + [Define if you have a standard-conformant snprintf function.]) + fi +]) + +AC_DEFUN([BASH_FUNC_VSNPRINTF], +[ + AC_CHECK_FUNCS_ONCE([vsnprintf]) + if test X$ac_cv_func_vsnprintf = Xyes; then + AC_CACHE_CHECK([for standard-conformant vsnprintf], [bash_cv_func_vsnprintf], + [AC_RUN_IFELSE([AC_LANG_SOURCE([[ +#if HAVE_STDARG_H +#include <stdarg.h> +#else +#include <varargs.h> +#endif +#include <stdio.h> +#include <stdlib.h> + +static int +#if HAVE_STDARG_H +foo(const char *fmt, ...) +#else +foo(format, va_alist) + const char *format; + va_dcl +#endif +{ + va_list args; + int n; + +#if HAVE_STDARG_H + va_start(args, fmt); +#else + va_start(args); +#endif + n = vsnprintf(0, 0, fmt, args); + va_end (args); + return n; +} + +int +main() +{ + int n; + n = foo("%s", "0123456"); + exit(n != 7); +} +]])], [bash_cv_func_vsnprintf=yes], [bash_cv_func_vsnprintf=no], + [AC_MSG_WARN([cannot check standard vsnprintf if cross-compiling]) + bash_cv_func_vsnprintf=yes] +)]) + if test $bash_cv_func_vsnprintf = no; then + ac_cv_func_vsnprintf=no + fi + fi + if test $ac_cv_func_vsnprintf = no; then + AC_DEFINE(HAVE_VSNPRINTF, 0, + [Define if you have a standard-conformant vsnprintf function.]) + fi +]) + +AC_DEFUN(BASH_STRUCT_WEXITSTATUS_OFFSET, +[AC_MSG_CHECKING(for offset of exit status in return status from wait) +AC_CACHE_VAL(bash_cv_wexitstatus_offset, +[AC_RUN_IFELSE([AC_LANG_SOURCE([[ +#include <stdlib.h> +#include <unistd.h> + +#include <sys/wait.h> + +int +main(c, v) + int c; + char **v; +{ + pid_t pid, p; + int s, i, n; + + s = 0; + pid = fork(); + if (pid == 0) + exit (42); + + /* wait for the process */ + p = wait(&s); + if (p != pid) + exit (255); + + /* crack s */ + for (i = 0; i < (sizeof(s) * 8); i++) + { + n = (s >> i) & 0xff; + if (n == 42) + exit (i); + } + + exit (254); +} +]])], [bash_cv_wexitstatus_offset=0], [bash_cv_wexitstatus_offset=$?], + [AC_MSG_WARN(cannot check WEXITSTATUS offset if cross compiling -- defaulting to 0) + bash_cv_wexitstatus_offset=0] +)]) +if test "$bash_cv_wexitstatus_offset" -gt 32 ; then + AC_MSG_WARN(bad exit status from test program -- defaulting to 0) + bash_cv_wexitstatus_offset=0 +fi +AC_MSG_RESULT($bash_cv_wexitstatus_offset) +AC_DEFINE_UNQUOTED([WEXITSTATUS_OFFSET], [$bash_cv_wexitstatus_offset], [Offset of exit status in wait status word]) +]) + +AC_DEFUN([BASH_FUNC_SBRK], +[ + AC_MSG_CHECKING([for sbrk]) + AC_CACHE_VAL(ac_cv_func_sbrk, + [AC_LINK_IFELSE( + [AC_LANG_PROGRAM( + [[#include <unistd.h>]], + [[ void *x = sbrk (4096); ]])], + [ac_cv_func_sbrk=yes],[ac_cv_func_sbrk=no])]) + AC_MSG_RESULT($ac_cv_func_sbrk) + if test X$ac_cv_func_sbrk = Xyes; then + AC_CACHE_CHECK([for working sbrk], [bash_cv_func_sbrk], + [AC_RUN_IFELSE([AC_LANG_SOURCE([[ +#include <stdlib.h> +#include <unistd.h> + +int +main(int c, char **v) +{ + void *x; + + x = sbrk (4096); + exit ((x == (void *)-1) ? 1 : 0); +} +]])],[bash_cv_func_sbrk=yes],[bash_cv_func_sbrk=no],[AC_MSG_WARN([cannot check working sbrk if cross-compiling]) + bash_cv_func_sbrk=yes +])]) + if test $bash_cv_func_sbrk = no; then + ac_cv_func_sbrk=no + fi + fi + if test $ac_cv_func_sbrk = yes; then + AC_DEFINE(HAVE_SBRK, 1, + [Define if you have a working sbrk function.]) + fi +]) + +AC_DEFUN(BASH_FUNC_FNMATCH_EQUIV_FALLBACK, +[AC_MSG_CHECKING(whether fnmatch can be used to check bracket equivalence classes) +AC_CACHE_VAL(bash_cv_fnmatch_equiv_fallback, +[AC_RUN_IFELSE([AC_LANG_SOURCE([[ +#include <stdlib.h> +#include <unistd.h> +#include <stdio.h> +#include <fnmatch.h> +#include <locale.h> + +char *pattern = "[[=a=]]"; + +/* char *string = "รค"; */ +unsigned char string[4] = { '\xc3', '\xa4', '\0' }; + +int +main (int c, char **v) +{ + setlocale (LC_ALL, "en_US.UTF-8"); + if (fnmatch (pattern, (const char *)string, 0) != FNM_NOMATCH) + exit (0); + exit (1); +} +]])], [bash_cv_fnmatch_equiv_fallback=yes], [bash_cv_fnmatch_equiv_fallback=no], + [AC_MSG_WARN(cannot check fnmatch if cross compiling -- defaulting to no) + bash_cv_fnmatch_equiv_fallback=no] +)]) +AC_MSG_RESULT($bash_cv_fnmatch_equiv_fallback) +if test "$bash_cv_fnmatch_equiv_fallback" = "yes" ; then + bash_cv_fnmatch_equiv_value=1 +else + bash_cv_fnmatch_equiv_value=0 +fi +AC_DEFINE_UNQUOTED([FNMATCH_EQUIV_FALLBACK], [$bash_cv_fnmatch_equiv_value], [Whether fnmatch can be used for bracket equivalence classes]) +]) |