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Diffstat (limited to 'config/programs.m4')
| -rw-r--r-- | config/programs.m4 | 330 |
1 files changed, 330 insertions, 0 deletions
diff --git a/config/programs.m4 b/config/programs.m4 new file mode 100644 index 0000000..8a118b4 --- /dev/null +++ b/config/programs.m4 @@ -0,0 +1,330 @@ +# config/programs.m4 + + +# PGAC_PATH_PROGS +# --------------- +# This wrapper for AC_PATH_PROGS behaves like that macro except when +# VARIABLE is already set; in that case we just accept the value verbatim. +# (AC_PATH_PROGS would accept it only if it looks like an absolute path.) +# A desirable future improvement would be to convert a non-absolute-path +# input into absolute form. +AC_DEFUN([PGAC_PATH_PROGS], +[if test -z "$$1"; then + AC_PATH_PROGS($@) +else + # Report the value of $1 in configure's output in all cases. + AC_MSG_CHECKING([for $1]) + AC_MSG_RESULT([$$1]) +fi +]) + + +# PGAC_PATH_BISON +# --------------- +# Look for Bison, set the output variable BISON to its path if found. +# Reject versions before 2.3 (the earliest version in the buildfarm +# as of 2022). Note we do not accept other implementations of yacc. + +AC_DEFUN([PGAC_PATH_BISON], +[PGAC_PATH_PROGS(BISON, bison) + +if test "$BISON"; then + pgac_bison_version=`$BISON --version 2>/dev/null | sed q` + AC_MSG_NOTICE([using $pgac_bison_version]) + if echo "$pgac_bison_version" | $AWK '{ if ([$]4 < 2.3) exit 0; else exit 1;}' + then + AC_MSG_WARN([ +*** The installed version of Bison, $BISON, is too old to use with PostgreSQL. +*** Bison version 2.3 or later is required, but this is $pgac_bison_version.]) + BISON="" + fi + # Bison >=3.0 issues warnings about %name-prefix="base_yy", instead + # of the now preferred %name-prefix "base_yy", but the latter + # doesn't work with Bison 2.3 or less. So for now we silence the + # deprecation warnings. + if echo "$pgac_bison_version" | $AWK '{ if ([$]4 >= 3) exit 0; else exit 1;}' + then + BISONFLAGS="$BISONFLAGS -Wno-deprecated" + fi +fi + +if test -z "$BISON"; then + AC_MSG_WARN([ +*** Without Bison you will not be able to build PostgreSQL from Git nor +*** change any of the parser definition files. You can obtain Bison from +*** a GNU mirror site. (If you are using the official distribution of +*** PostgreSQL then you do not need to worry about this, because the Bison +*** output is pre-generated.)]) +fi +dnl We don't need AC_SUBST(BISON) because PGAC_PATH_PROGS did it +AC_SUBST(BISONFLAGS) +])# PGAC_PATH_BISON + + + +# PGAC_PATH_FLEX +# -------------- +# Look for Flex, set the output variable FLEX to its path if found. +# Reject versions before 2.5.35 (the earliest version in the buildfarm +# as of 2022). Also find Flex if its installed under `lex', but do not +# accept other Lex programs. + +AC_DEFUN([PGAC_PATH_FLEX], +[AC_CACHE_CHECK([for flex], pgac_cv_path_flex, +[# Let the user override the test +if test -n "$FLEX"; then + pgac_cv_path_flex=$FLEX +else + pgac_save_IFS=$IFS + IFS=$PATH_SEPARATOR + for pgac_dir in $PATH; do + IFS=$pgac_save_IFS + if test -z "$pgac_dir" || test x"$pgac_dir" = x"."; then + pgac_dir=`pwd` + fi + for pgac_prog in flex lex; do + pgac_candidate="$pgac_dir/$pgac_prog" + if test -f "$pgac_candidate" \ + && $pgac_candidate --version </dev/null >/dev/null 2>&1 + then + echo '%%' > conftest.l + if $pgac_candidate -t conftest.l 2>/dev/null | grep FLEX_SCANNER >/dev/null 2>&1; then + pgac_flex_version=`$pgac_candidate --version 2>/dev/null` + if echo "$pgac_flex_version" | sed ['s/[.a-z]/ /g'] | $AWK '{ if ([$]1 == 2 && ([$]2 > 5 || ([$]2 == 5 && [$]3 >= 35))) exit 0; else exit 1;}' + then + pgac_cv_path_flex=$pgac_candidate + break 2 + else + AC_MSG_WARN([ +*** The installed version of Flex, $pgac_candidate, is too old to use with PostgreSQL. +*** Flex version 2.5.35 or later is required, but this is $pgac_flex_version.]) + fi + fi + fi + done + done + rm -f conftest.l lex.yy.c + : ${pgac_cv_path_flex=no} +fi +])[]dnl AC_CACHE_CHECK + +if test x"$pgac_cv_path_flex" = x"no"; then + AC_MSG_WARN([ +*** Without Flex you will not be able to build PostgreSQL from Git nor +*** change any of the scanner definition files. You can obtain Flex from +*** a GNU mirror site. (If you are using the official distribution of +*** PostgreSQL then you do not need to worry about this because the Flex +*** output is pre-generated.)]) + + FLEX= +else + FLEX=$pgac_cv_path_flex + pgac_flex_version=`$FLEX --version 2>/dev/null` + AC_MSG_NOTICE([using $pgac_flex_version]) +fi + +AC_SUBST(FLEX) +AC_SUBST(FLEXFLAGS) +])# PGAC_PATH_FLEX + + + +# PGAC_LDAP_SAFE +# -------------- +# PostgreSQL sometimes loads libldap_r and plain libldap into the same +# process. Check for OpenLDAP versions known not to tolerate doing so; assume +# non-OpenLDAP implementations are safe. The dblink test suite exercises the +# hazardous interaction directly. + +AC_DEFUN([PGAC_LDAP_SAFE], +[AC_CACHE_CHECK([for compatible LDAP implementation], [pgac_cv_ldap_safe], +[AC_COMPILE_IFELSE([AC_LANG_PROGRAM( +[#include <ldap.h> +#if !defined(LDAP_VENDOR_VERSION) || \ + (defined(LDAP_API_FEATURE_X_OPENLDAP) && \ + LDAP_VENDOR_VERSION >= 20424 && LDAP_VENDOR_VERSION <= 20431) +choke me +#endif], [])], +[pgac_cv_ldap_safe=yes], +[pgac_cv_ldap_safe=no])]) + +if test "$pgac_cv_ldap_safe" != yes; then + AC_MSG_WARN([ +*** With OpenLDAP versions 2.4.24 through 2.4.31, inclusive, each backend +*** process that loads libpq (via WAL receiver, dblink, or postgres_fdw) and +*** also uses LDAP will crash on exit.]) +fi]) + + + +# PGAC_CHECK_READLINE +# ------------------- +# Check for the readline library and dependent libraries, either +# termcap or curses. Also try libedit, since NetBSD's is compatible. +# Add the required flags to LIBS, define HAVE_LIBREADLINE. + +AC_DEFUN([PGAC_CHECK_READLINE], +[AC_REQUIRE([AC_CANONICAL_HOST]) + +AC_CACHE_CHECK([for library containing readline], [pgac_cv_check_readline], +[pgac_cv_check_readline=no +pgac_save_LIBS=$LIBS +if test x"$with_libedit_preferred" != x"yes" +then READLINE_ORDER="-lreadline -ledit" +else READLINE_ORDER="-ledit -lreadline" +fi +for pgac_rllib in $READLINE_ORDER ; do + for pgac_lib in "" " -ltermcap" " -lncurses" " -lcurses" ; do + LIBS="${pgac_rllib}${pgac_lib} $pgac_save_LIBS" + AC_TRY_LINK_FUNC([readline], [[ + # Older NetBSD and OpenBSD have a broken linker that does not + # recognize dependent libraries; assume curses is needed if we didn't + # find any dependency. + case $host_os in + netbsd* | openbsd*) + if test x"$pgac_lib" = x"" ; then + pgac_lib=" -lcurses" + fi ;; + esac + + pgac_cv_check_readline="${pgac_rllib}${pgac_lib}" + break + ]]) + done + if test "$pgac_cv_check_readline" != no ; then + break + fi +done +LIBS=$pgac_save_LIBS +])[]dnl AC_CACHE_CHECK + +if test "$pgac_cv_check_readline" != no ; then + LIBS="$pgac_cv_check_readline $LIBS" + AC_DEFINE(HAVE_LIBREADLINE, 1, [Define if you have a function readline library]) +fi + +])# PGAC_CHECK_READLINE + + + +# PGAC_READLINE_VARIABLES +# ----------------------- +# Some Readline versions lack rl_completion_suppress_quote. +# Libedit lacks rl_filename_quote_characters and rl_filename_quoting_function + +AC_DEFUN([PGAC_READLINE_VARIABLES], +[AC_CACHE_CHECK([for rl_completion_suppress_quote], pgac_cv_var_rl_completion_suppress_quote, +[AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <stdio.h> +#if defined(HAVE_READLINE_READLINE_H) +#include <readline/readline.h> +#elif defined(HAVE_EDITLINE_READLINE_H) +#include <editline/readline.h> +#elif defined(HAVE_READLINE_H) +#include <readline.h> +#endif +], +[rl_completion_suppress_quote = 1;])], +[pgac_cv_var_rl_completion_suppress_quote=yes], +[pgac_cv_var_rl_completion_suppress_quote=no])]) +if test x"$pgac_cv_var_rl_completion_suppress_quote" = x"yes"; then +AC_DEFINE(HAVE_RL_COMPLETION_SUPPRESS_QUOTE, 1, + [Define to 1 if you have the global variable 'rl_completion_suppress_quote'.]) +fi +AC_CACHE_CHECK([for rl_filename_quote_characters], pgac_cv_var_rl_filename_quote_characters, +[AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <stdio.h> +#if defined(HAVE_READLINE_READLINE_H) +#include <readline/readline.h> +#elif defined(HAVE_EDITLINE_READLINE_H) +#include <editline/readline.h> +#elif defined(HAVE_READLINE_H) +#include <readline.h> +#endif +], +[rl_filename_quote_characters = "x";])], +[pgac_cv_var_rl_filename_quote_characters=yes], +[pgac_cv_var_rl_filename_quote_characters=no])]) +if test x"$pgac_cv_var_rl_filename_quote_characters" = x"yes"; then +AC_DEFINE(HAVE_RL_FILENAME_QUOTE_CHARACTERS, 1, + [Define to 1 if you have the global variable 'rl_filename_quote_characters'.]) +fi +AC_CACHE_CHECK([for rl_filename_quoting_function], pgac_cv_var_rl_filename_quoting_function, +[AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <stdio.h> +#if defined(HAVE_READLINE_READLINE_H) +#include <readline/readline.h> +#elif defined(HAVE_EDITLINE_READLINE_H) +#include <editline/readline.h> +#elif defined(HAVE_READLINE_H) +#include <readline.h> +#endif +], +[rl_filename_quoting_function = 0;])], +[pgac_cv_var_rl_filename_quoting_function=yes], +[pgac_cv_var_rl_filename_quoting_function=no])]) +if test x"$pgac_cv_var_rl_filename_quoting_function" = x"yes"; then +AC_DEFINE(HAVE_RL_FILENAME_QUOTING_FUNCTION, 1, + [Define to 1 if you have the global variable 'rl_filename_quoting_function'.]) +fi +])# PGAC_READLINE_VARIABLES + + + +# PGAC_CHECK_GETTEXT +# ------------------ +# We check for bind_textdomain_codeset() not just gettext(). GNU gettext +# before 0.10.36 does not have that function, and is generally too incomplete +# to be usable. + +AC_DEFUN([PGAC_CHECK_GETTEXT], +[ + AC_SEARCH_LIBS(bind_textdomain_codeset, intl, [], + [AC_MSG_ERROR([a gettext implementation is required for NLS])]) + AC_CHECK_HEADER([libintl.h], [], + [AC_MSG_ERROR([header file <libintl.h> is required for NLS])]) + PGAC_PATH_PROGS(MSGFMT, msgfmt) + AC_ARG_VAR(MSGFMT, [msgfmt program for NLS])dnl + if test -z "$MSGFMT"; then + AC_MSG_ERROR([msgfmt is required for NLS]) + fi + AC_CACHE_CHECK([for msgfmt flags], pgac_cv_msgfmt_flags, +[if test x"$MSGFMT" != x"" && "$MSGFMT" --version 2>&1 | grep "GNU" >/dev/null; then + pgac_cv_msgfmt_flags=-c +fi]) + AC_SUBST(MSGFMT_FLAGS, $pgac_cv_msgfmt_flags) + PGAC_PATH_PROGS(MSGMERGE, msgmerge) + PGAC_PATH_PROGS(XGETTEXT, xgettext) +])# PGAC_CHECK_GETTEXT + + + +# PGAC_CHECK_STRIP +# ---------------- +# Check for a 'strip' program, and figure out if that program can +# strip libraries. + +AC_DEFUN([PGAC_CHECK_STRIP], +[ + AC_CHECK_TOOL(STRIP, strip, :) + + AC_MSG_CHECKING([whether it is possible to strip libraries]) + if test x"$STRIP" != x"" && "$STRIP" -V 2>&1 | grep "GNU strip" >/dev/null; then + STRIP_STATIC_LIB="$STRIP --strip-unneeded" + STRIP_SHARED_LIB="$STRIP --strip-unneeded" + AC_MSG_RESULT(yes) + else + case $host_os in + darwin*) + STRIP="$STRIP -x" + STRIP_STATIC_LIB=$STRIP + STRIP_SHARED_LIB=$STRIP + AC_MSG_RESULT(yes) + ;; + *) + STRIP_STATIC_LIB=: + STRIP_SHARED_LIB=: + AC_MSG_RESULT(no) + ;; + esac + fi + AC_SUBST(STRIP_STATIC_LIB) + AC_SUBST(STRIP_SHARED_LIB) +])# PGAC_CHECK_STRIP |