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-rw-r--r--m4/ul.m4527
1 files changed, 527 insertions, 0 deletions
diff --git a/m4/ul.m4 b/m4/ul.m4
new file mode 100644
index 0000000..9b3e73d
--- /dev/null
+++ b/m4/ul.m4
@@ -0,0 +1,527 @@
+dnl If needed, define the m4_ifblank and m4_ifnblank macros from autoconf 2.64
+dnl This allows us to run with earlier Autoconfs as well.
+dnl
+dnl m4_ifblank(COND, [IF-BLANK], [IF-TEXT])
+dnl m4_ifnblank(COND, [IF-TEXT], [IF-BLANK])
+dnl ----------------------------------------
+dnl If COND is empty, or consists only of blanks (space, tab, newline),
+dnl then expand IF-BLANK, otherwise expand IF-TEXT. This differs from
+dnl m4_ifval only if COND has just whitespace, but it helps optimize in
+dnl spite of users who mistakenly leave trailing space after what they
+dnl thought was an empty argument:
+dnl macro(
+dnl []
+dnl )
+dnl
+dnl Writing one macro in terms of the other causes extra overhead, so
+dnl we inline both definitions.
+ifdef([m4_ifblank],[],[
+m4_define([m4_ifblank],
+[m4_if(m4_translit([[$1]], [ ][ ][
+]), [], [$2], [$3])])])
+
+ifdef([m4_ifnblank],[],[
+m4_define([m4_ifnblank],
+[m4_if(m4_translit([[$1]], [ ][ ][
+]), [], [$3], [$2])])])
+
+dnl UL_PKG_STATIC(VARIABLE, MODULES)
+dnl
+dnl Calls pkg-config --static
+dnl
+AC_DEFUN([UL_PKG_STATIC], [
+ if AC_RUN_LOG([$PKG_CONFIG --exists --print-errors "$2"]); then
+ $1=`$PKG_CONFIG --libs --static "$2"`
+ else
+ AC_MSG_ERROR([pkg-config description of $2, needed for static build, is not available])
+ fi
+])
+
+dnl UL_CHECK_LIB(LIBRARY, FUNCTION, [VARSUFFIX = $1]))
+dnl
+dnl The VARSUFFIX is optional and overrides the default behavior. For example:
+dnl UL_CHECK_LIB(yyy, func, xxx) generates have_xxx and HAVE_LIBXXX
+dnl UL_CHECK_LIB(yyy, func) generates have_yyy and HAVE_LIBYYY
+dnl
+AC_DEFUN([UL_CHECK_LIB], [
+ m4_define([suffix], m4_default([$3],$1))
+ [have_]suffix=yes
+ m4_ifdef([$3],
+ [AC_CHECK_LIB([$1], [$2], [AC_DEFINE(AS_TR_CPP([HAVE_LIB]suffix), 1)], [[have_]suffix=no])],
+ [AC_CHECK_LIB([$1], [$2], [], [[have_]suffix=no])])
+ AM_CONDITIONAL(AS_TR_CPP([HAVE_]suffix), [test [$have_]suffix = yes])
+])
+
+
+dnl UL_SET_ARCH(ARCHNAME, PATTERN)
+dnl
+dnl Define ARCH_<archname> condition if the pattern match with the current
+dnl architecture
+dnl
+AC_DEFUN([UL_SET_ARCH], [
+ cpu_$1=false
+ case "$host" in
+ $2) cpu_$1=true ;;
+ esac
+ AM_CONDITIONAL(AS_TR_CPP(ARCH_$1), [test "x$cpu_$1" = xtrue])
+])
+
+
+dnl UL_SET_FLAGS(CFLAGS, CPPFLAGS, LDFLAGS)
+dnl
+dnl Sets new global CFLAGS, CPPFLAGS and LDFLAG, the original
+dnl setting could be restored by UL_RESTORE_FLAGS()
+dnl
+AC_DEFUN([UL_SET_FLAGS], [
+ old_CFLAGS="$CFLAGS"
+ old_CPPFLAGS="$CPPFLAGS"
+ old_LDFLAGS="$LDFLAGS"
+ CFLAGS="$CFLAGS $1"
+ CPPFLAGS="$CPPFLAGS $2"
+ LDFLAGS="$LDFLAGS $3"
+])
+
+dnl UL_RESTORE_FLAGS()
+dnl
+dnl Restores CFLAGS, CPPFLAGS and LDFLAG previously saved by UL_SET_FLAGS()
+dnl
+AC_DEFUN([UL_RESTORE_FLAGS], [
+ CFLAGS="$old_CFLAGS"
+ CPPFLAGS="$old_CPPFLAGS"
+ LDFLAGS="$old_LDFLAGS"
+])
+
+
+dnl UL_CHECK_SYSCALL(SYSCALL, FALLBACK, ...)
+dnl
+dnl Only specify FALLBACK if the SYSCALL you're checking for is a "newish" one
+dnl
+AC_DEFUN([UL_CHECK_SYSCALL], [
+ dnl This macro uses host_cpu.
+ AC_REQUIRE([AC_CANONICAL_HOST])
+ AC_CACHE_CHECK([for syscall $1],
+ [ul_cv_syscall_$1],
+ [_UL_SYSCALL_CHECK_DECL([SYS_$1],
+ [syscall=SYS_$1],
+ [dnl Our libc failed use, so see if we can get the kernel
+ dnl headers to play ball ...
+ _UL_SYSCALL_CHECK_DECL([_NR_$1],
+ [syscall=_NR_$1],
+ [
+ syscall=no
+ if test "x$linux_os" = xyes; then
+ case $host_cpu in
+ _UL_CHECK_SYSCALL_FALLBACK(m4_shift($@))
+ esac
+ fi
+ ])
+ ])
+ ul_cv_syscall_$1=$syscall
+ ])
+ case $ul_cv_syscall_$1 in #(
+ no) AC_MSG_WARN([Unable to detect syscall $1.]) ;;
+ SYS_*) ;;
+ *) AC_DEFINE_UNQUOTED([SYS_$1], [$ul_cv_syscall_$1],
+ [Fallback syscall number for $1]) ;;
+ esac
+])
+
+
+dnl _UL_SYSCALL_CHECK_DECL(SYMBOL, ACTION-IF-FOUND, ACTION-IF-NOT-FOUND)
+dnl
+dnl Check if SYMBOL is declared, using the headers needed for syscall checks.
+dnl
+m4_define([_UL_SYSCALL_CHECK_DECL],
+[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+#include <sys/syscall.h>
+#include <unistd.h>
+]], [[int test = $1;]])],
+[$2], [$3])
+])
+
+dnl _UL_CHECK_SYSCALL_FALLBACK(PATTERN, VALUE, ...)
+dnl
+dnl Helper macro to create the body for the above `case'.
+dnl
+m4_define([_UL_CHECK_SYSCALL_FALLBACK],
+[m4_ifval([$1],
+ [#(
+ $1) syscall="$2" ;;dnl
+ _UL_CHECK_SYSCALL_FALLBACK(m4_shiftn(2, $@))])dnl
+])
+
+
+dnl UL_REQUIRES_LINUX(NAME, [VARSUFFIX = $1])
+dnl
+dnl Modifies $build_<name> variable according to $enable_<name> and OS type. The
+dnl $enable_<name> could be "yes", "no" and "check". If build_<name> is "no" then
+dnl all checks are skiped.
+dnl
+dnl The default <name> for $build_ and $enable_ could be overwrited by option $2.
+dnl
+AC_DEFUN([UL_REQUIRES_LINUX], [
+ m4_define([suffix], m4_default([$2],$1))
+ if test "x$[build_]suffix" != xno; then
+ AC_REQUIRE([AC_CANONICAL_HOST])
+ case $[enable_]suffix:$linux_os in #(
+ no:*)
+ [build_]suffix=no ;;
+ yes:yes)
+ [build_]suffix=yes ;;
+ yes:*)
+ AC_MSG_ERROR([$1 selected for non-linux system]);;
+ check:yes)
+ [build_]suffix=yes ;;
+ check:*)
+ AC_MSG_WARN([non-linux system; not building $1])
+ [build_]suffix=no ;;
+ esac
+ fi
+])
+
+
+dnl UL_EXCLUDE_ARCH(NAME, ARCH, [VARSUFFIX = $1])
+dnl
+dnl Modifies $build_<name> variable according to $enable_<name> and $host. The
+dnl $enable_<name> could be "yes", "no" and "check". If build_<name> is "no" then
+dnl all checks are skiped.
+dnl
+dnl The default <name> for $build_ and $enable_ could be overwrited by option $3.
+dnl
+AC_DEFUN([UL_EXCLUDE_ARCH], [
+ m4_define([suffix], m4_default([$3],$1))
+ if test "x$[build_]suffix" != xno; then
+ AC_REQUIRE([AC_CANONICAL_HOST])
+ case $[enable_]suffix:"$host" in #(
+ no:*)
+ [build_]suffix=no ;;
+ yes:$2)
+ AC_MSG_ERROR([$1 selected for unsupported architecture]);;
+ yes:*)
+ [build_]suffix=yes ;;
+ check:$2)
+ AC_MSG_WARN([excluded for $host architecture; not building $1])
+ [build_]suffix=no ;;
+ check:*)
+ [build_]suffix=yes ;;
+ esac
+ fi
+])
+
+dnl UL_REQUIRES_HAVE(NAME, HAVENAME, HAVEDESC, [VARSUFFIX=$1])
+dnl
+dnl Modifies $build_<name> variable according to $enable_<name> and
+dnl $have_<havename>. The <havedesc> is description used for warning/error
+dnl message (e.g. "function").
+dnl
+dnl The <havename> maybe a list, then at least one of the items in the list
+dnl have to exist, for example: [ncurses, tinfo] means that have_ncurser=yes
+dnl *or* have_tinfo=yes must be defined.
+dnl
+dnl The default <name> for $build_ and $enable_ could be overwrited by option $4.
+dnl
+AC_DEFUN([UL_REQUIRES_HAVE], [
+ m4_define([suffix], m4_default([$4],$1))
+
+ if test "x$[build_]suffix" != xno; then
+
+ [ul_haveone_]suffix=no
+ m4_foreach([onehave], [$2], [
+ if test "x$[have_]onehave" = xyes; then
+ [ul_haveone_]suffix=yes
+ fi
+ ])dnl
+
+ case $[enable_]suffix:$[ul_haveone_]suffix in #(
+ no:*)
+ [build_]suffix=no ;;
+ yes:yes)
+ [build_]suffix=yes ;;
+ yes:*)
+ AC_MSG_ERROR([$1 selected, but required $3 not available]);;
+ check:yes)
+ [build_]suffix=yes ;;
+ check:*)
+ AC_MSG_WARN([$3 not found; not building $1])
+ [build_]suffix=no ;;
+ esac
+ fi
+])
+
+dnl UL_REQUIRES_HAVE(NAME, PROGRAM_PROLOGUE, PROGRAM_BODY, DESC, [VARSUFFIX=$1])
+dnl
+dnl Modifies $build_<name> variable according to $enable_<name> and
+dnl ability compile AC_LANG_PROGRAM(<program_prologue>, <program_body>).
+dnl
+dnl The <desc> is description used for warning/error dnl message (e.g. "foo support").
+dnl
+dnl The default <name> for $build_ and $enable_ could be overwrited by option $5.
+
+AC_DEFUN([UL_REQUIRES_COMPILE], [
+ m4_define([suffix], m4_default([$5],$1))
+
+ if test "x$[build_]suffix" != xno; then
+
+ AC_MSG_CHECKING([$4])
+ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([$2], [$3])],
+ [AC_MSG_RESULT([yes])
+ [ul_haveprogram_]suffix=yes],
+ [AC_MSG_RESULT([no])
+ [ul_haveprogram_]suffix=no])
+
+ case $[enable_]suffix:$[ul_haveprogram_]suffix in #(
+ no:*)
+ [build_]suffix=no ;;
+ yes:yes)
+ [build_]suffix=yes ;;
+ yes:*)
+ AC_MSG_ERROR([$1 selected, but required $4 not available]);;
+ check:yes)
+ [build_]suffix=yes ;;
+ check:*)
+ AC_MSG_WARN([$4 not found; not building $1])
+ [build_]suffix=no ;;
+ esac
+ fi
+])
+
+dnl
+dnl UL_CONFLICTS_BUILD(NAME, ANOTHER, ANOTHERDESC, [VARSUFFIX=$1])
+dnl
+dnl - ends with error if $enable_<name> and $build_<another>
+dnl are both set to 'yes'
+dnl - sets $build_<name> to 'no' if $build_<another> is 'yes' and
+dnl $enable_<name> is 'check' or 'no'
+dnl
+dnl The <havedesc> is description used for warning/error
+dnl message (e.g. "function").
+dnl
+dnl The default <name> for $build_ and $enable_ could be overwrited by option $4.
+dnl
+AC_DEFUN([UL_CONFLICTS_BUILD], [
+ m4_define([suffix], m4_default([$4],$1))
+
+ if test "x$[build_]suffix" != xno; then
+ case $[enable_]suffix:$[build_]$2 in #(
+ no:*)
+ [build_]suffix=no ;;
+ check:yes)
+ [build_]suffix=no ;;
+ check:no)
+ [build_]suffix=yes ;;
+ yes:yes)
+ AC_MSG_ERROR([$1 selected, but it conflicts with $3]);;
+ esac
+ fi
+])
+
+
+dnl UL_REQUIRES_BUILD(NAME, BUILDNAME, [VARSUFFIX=$1])
+dnl
+dnl Modifies $build_<name> variable according to $enable_<name> and $have_funcname.
+dnl
+dnl The default <name> for $build_ and $enable_ could be overwrited by option $3.
+dnl
+AC_DEFUN([UL_REQUIRES_BUILD], [
+ m4_define([suffix], m4_default([$3],$1))
+
+ if test "x$[build_]suffix" != xno; then
+ case $[enable_]suffix:$[build_]$2 in #(
+ no:*)
+ [build_]suffix=no ;;
+ yes:yes)
+ [build_]suffix=yes ;;
+ yes:*)
+ AC_MSG_ERROR([$2 is needed to build $1]);;
+ check:yes)
+ [build_]suffix=yes ;;
+ check:*)
+ AC_MSG_WARN([$2 disabled; not building $1])
+ [build_]suffix=no ;;
+ esac
+ fi
+])
+
+dnl UL_REQUIRES_SYSCALL_CHECK(NAME, SYSCALL-TEST, [SYSCALLNAME=$1], [VARSUFFIX=$1])
+dnl
+dnl Modifies $build_<name> variable according to $enable_<name> and SYSCALL-TEST
+dnl result. The $enable_<name> variable could be "yes", "no" and "check". If build_<name>
+dnl is "no" then all checks are skiped.
+dnl
+dnl Note that SYSCALL-TEST has to define $ul_cv_syscall_<name> variable, see
+dnl also UL_CHECK_SYSCALL().
+dnl
+dnl The default <name> for $build_ and $enable_ count be overwrited by option $4 and
+dnl $ul_cv_syscall_ could be overwrited by $3.
+dnl
+AC_DEFUN([UL_REQUIRES_SYSCALL_CHECK], [
+ m4_define([suffix], m4_default([$4],$1))
+ m4_define([callname], m4_default([$3],$1))
+
+ if test "x$[build_]suffix" != xno; then
+ if test "x$[enable_]suffix" = xno; then
+ [build_]suffix=no
+ else
+ $2
+ case $[enable_]suffix:$[ul_cv_syscall_]callname in #(
+ no:*)
+ [build_]suffix=no ;;
+ yes:no)
+ AC_MSG_ERROR([$1 selected but callname syscall not found]) ;;
+ check:no)
+ AC_MSG_WARN([callname syscall not found; not building $1])
+ [build_]suffix=no ;;
+ *)
+ dnl default $ul_cv_syscall_ is SYS_ value
+ [build_]suffix=yes ;;
+ esac
+ fi
+ fi
+])
+
+dnl UL_BUILD_INIT(NAME, [ENABLE_STATE], [VARSUFFIX = $1])
+dnl
+dnl Initializes $build_<name> variable according to $enable_<name>. If
+dnl $enable_<name> is undefined then ENABLE_STATE is used and $enable_<name> is
+dnl set to ENABLE_STATE.
+dnl
+dnl The default <name> for $build_ and $enable_ could be overwrited by option $3.
+dnl
+AC_DEFUN([UL_BUILD_INIT], [
+ m4_define([suffix], m4_default([$3],$1))
+ m4_ifblank([$2],
+[if test "x$enable_[]suffix" = xno; then
+ build_[]suffix=no
+else
+ build_[]suffix=yes
+fi],
+[if test "x$ul_default_estate" != x; then
+ enable_[]suffix=$ul_default_estate
+ build_[]suffix=yes
+ if test "x$ul_default_estate" = xno; then
+ build_[]suffix=no
+ fi
+else[]
+ ifelse(
+ [$2], [check],[
+ build_[]suffix=yes
+ enable_[]suffix=check],
+ [$2], [yes],[
+ build_[]suffix=yes
+ enable_[]suffix=yes],
+ [$2], [no], [
+ build_[]suffix=no
+ enable_[]suffix=no])
+fi])
+])
+
+dnl UL_DEFAULT_ENABLE(NAME, ENABLE_STATE)
+dnl
+dnl Initializes $enable_<name> variable according to ENABLE_STATE. The default
+dnl setting is possible to override by global $ul_default_estate.
+dnl
+AC_DEFUN([UL_DEFAULT_ENABLE], [
+ m4_define([suffix], $1)
+ if test "x$ul_default_estate" != x; then
+ enable_[]suffix=$ul_default_estate
+ else
+ enable_[]suffix=$2
+ fi
+])
+
+
+dnl UL_ENABLE_ALIAS(NAME, MASTERNAME)
+dnl
+dnl Initializes $enable_<name> variable according to $enable_<mastername>. This
+dnl is useful for example if you want to use one --enable-mastername option
+dnl for group of programs.
+dnl
+AC_DEFUN([UL_ENABLE_ALIAS], [
+ m4_define([suffix], $1)
+ m4_define([mastersuffix], $2)
+
+ enable_[]suffix=$enable_[]mastersuffix
+])
+
+
+dnl UL_NCURSES_CHECK(NAME)
+dnl
+dnl Initializes $have_<name>, NCURSES_LIBS and NCURSES_CFLAGS variables according to
+dnl <name>{6,5}_config output.
+dnl
+dnl The expected <name> is ncurses or ncursesw.
+dnl
+AC_DEFUN([UL_NCURSES_CHECK], [
+ m4_define([suffix], $1)
+ m4_define([SUFFIX], m4_toupper($1))
+
+ # ncurses6-config
+ #
+ AS_IF([test "x$have_[]suffix" = xno], [
+ AC_CHECK_TOOL(SUFFIX[]6_CONFIG, suffix[]6-config)
+ if AC_RUN_LOG([$SUFFIX[]6_CONFIG --version >/dev/null]); then
+ have_[]suffix=yes
+ NCURSES_LIBS=`$SUFFIX[]6_CONFIG --libs`
+ NCURSES_CFLAGS=`$SUFFIX[]6_CONFIG --cflags`
+ else
+ have_[]suffix=no
+ fi
+ ])
+
+ # ncurses5-config
+ #
+ AS_IF([test "x$have_[]suffix" = xno], [
+ AC_CHECK_TOOL(SUFFIX[]5_CONFIG, suffix[]5-config)
+ if AC_RUN_LOG([$SUFFIX[]5_CONFIG --version >/dev/null]); then
+ have_[]suffix=yes
+ NCURSES_LIBS=`$SUFFIX[]5_CONFIG --libs`
+ NCURSES_CFLAGS=`$SUFFIX[]5_CONFIG --cflags`
+ else
+ have_[]suffix=no
+ fi
+ ])
+
+ # pkg-config (not supported by ncurses upstream by default)
+ #
+ AS_IF([test "x$have_[]suffix" = xno], [
+ PKG_CHECK_MODULES(SUFFIX, [$1], [
+ have_[]suffix=yes
+ NCURSES_LIBS=${SUFFIX[]_LIBS}
+ NCURSES_CFLAGS=${SUFFIX[]_CFLAGS}
+ ],[have_[]suffix=no])
+ ])
+
+ # classic autoconf way
+ #
+ AS_IF([test "x$have_[]suffix" = xno], [
+ AC_CHECK_LIB([$1], [initscr], [have_[]suffix=yes], [have_[]suffix=no])
+ AS_IF([test "x$have_[]suffix" = xyes], [NCURSES_LIBS="-l[]suffix"])
+ ])
+])
+
+dnl
+dnl UL_TINFO_CHECK(NAME)
+dnl
+dnl Initializes $have_<name>, TINFO_LIBS and TINFO_CFLAGS variables.
+dnl
+dnl The expected <name> is tinfow or tinfo.
+dnl
+AC_DEFUN([UL_TINFO_CHECK], [
+ m4_define([suffix], $1)
+ m4_define([SUFFIX], m4_toupper($1))
+
+ PKG_CHECK_MODULES(SUFFIX, [$1], [
+ dnl pkg-config success
+ have_[]suffix=yes
+ TINFO_LIBS=${SUFFIX[]_LIBS}
+ TINFO_CFLAGS=${SUFFIX[]_CFLAGS}
+ UL_PKG_STATIC([TINFO_LIBS_STATIC], [$1])
+ ],[
+ dnl If pkg-config failed, fall back to classic searching.
+ AC_CHECK_LIB([$1], [tgetent], [
+ have_[]suffix=yes
+ TINFO_LIBS="-l[]suffix"
+ TINFO_LIBS_STATIC="-l[]suffix"
+ TINFO_CFLAGS=""])
+ ])
+])
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-29 19:23:24 +0000