-# $PostgreSQL: pgsql/config/programs.m4,v 1.18 2004/12/02 20:04:19 tgl Exp $
+# config/programs.m4
+
+
+# PGAC_PATH_BISON
+# ---------------
+# Look for Bison, set the output variable BISON to its path if found.
+# Reject versions before 1.875 (they have bugs or capacity limits).
+# Note we do not accept other implementations of yacc.
+
+AC_DEFUN([PGAC_PATH_BISON],
+[# Let the user override the search
+if test -z "$BISON"; then
+ AC_PATH_PROGS(BISON, bison)
+fi
+
+if test "$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 < 1.875) exit 0; else exit 1;}'
+ then
+ AC_MSG_WARN([
+*** The installed version of Bison, $BISON, is too old to use with PostgreSQL.
+*** Bison version 1.875 or later is required, but this is $pgac_bison_version.])
+ BISON=""
+ fi
+fi
+
+if test -z "$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
+# We don't need AC_SUBST(BISON) because AC_PATH_PROG did it
+AC_SUBST(BISONFLAGS)
+])# PGAC_PATH_BISON
+
# PGAC_PATH_FLEX
# --------------
# Look for Flex, set the output variable FLEX to its path if found.
-# Avoid the buggy version 2.5.3. Also find Flex if its installed
-# under `lex', but do not accept other Lex programs.
+# Reject versions before 2.5.31, as we need a reasonably non-buggy reentrant
+# scanner. (Note: the well-publicized security problem in 2.5.31 does not
+# affect Postgres, and there are still distros shipping patched 2.5.31,
+# so allow it.) 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,
then
echo '%%' > conftest.l
if $pgac_candidate -t conftest.l 2>/dev/null | grep FLEX_SCANNER >/dev/null 2>&1; then
- if $pgac_candidate --version | grep ' 2\.5\.3$' >/dev/null 2>&1; then
- pgac_broken_flex=$pgac_candidate
- continue
+ pgac_flex_version=`$pgac_candidate --version 2>/dev/null`
+ if echo "$pgac_flex_version" | sed ['s/[.a-z]/ /g'] | $AWK '{ if ([$]1 = 2 && [$]2 = 5 && [$]3 >= 31) 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 2.5.31 or later is required, but this is $pgac_flex_version.])
fi
-
- pgac_cv_path_flex=$pgac_candidate
- break 2
fi
fi
done
])[]dnl AC_CACHE_CHECK
if test x"$pgac_cv_path_flex" = x"no"; then
- if test -n "$pgac_broken_flex"; then
- AC_MSG_WARN([
-*** The Flex version 2.5.3 you have at $pgac_broken_flex contains a bug. You
-*** should get version 2.5.4 or later.])
- fi
-
AC_MSG_WARN([
-*** Without Flex you will not be able to build PostgreSQL from CVS or
+*** Without Flex you will not be able to build PostgreSQL from Git nor
*** change any of the scanner definition files. You can obtain Flex from
*** a GNU mirror site. (If you are using the official distribution of
*** PostgreSQL then you do not need to worry about this because the Flex
*** output is pre-generated.)])
-fi
-if test x"$pgac_cv_path_flex" = x"no"; then
FLEX=
else
FLEX=$pgac_cv_path_flex
+ pgac_flex_version=`$FLEX --version 2>/dev/null`
+ AC_MSG_NOTICE([using $pgac_flex_version])
fi
AC_SUBST(FLEX)
AC_DEFUN([PGAC_CHECK_READLINE],
[AC_REQUIRE([AC_CANONICAL_HOST])
-AC_MSG_CHECKING([for readline])
-AC_CACHE_VAL([pgac_cv_check_readline],
+AC_CACHE_CHECK([for library containing readline], [pgac_cv_check_readline],
[pgac_cv_check_readline=no
pgac_save_LIBS=$LIBS
-for pgac_rllib in -lreadline -ledit ; do
+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} $pgac_save_LIBS"
AC_TRY_LINK_FUNC([readline], [[
esac
pgac_cv_check_readline="${pgac_rllib}${pgac_lib}"
- break 2
+ break
]])
done
+ if test "$pgac_cv_check_readline" != no ; then
+ break
+ fi
done
LIBS=$pgac_save_LIBS
-])[]dnl AC_CACHE_VAL
+])[]dnl AC_CACHE_CHECK
if test "$pgac_cv_check_readline" != no ; then
- AC_DEFINE(HAVE_LIBREADLINE, 1, [Define if you have a function readline library])
LIBS="$pgac_cv_check_readline $LIBS"
- AC_MSG_RESULT([yes ($pgac_cv_check_readline)])
-else
- AC_MSG_RESULT(no)
-fi])# PGAC_CHECK_READLINE
+ AC_DEFINE(HAVE_LIBREADLINE, 1, [Define if you have a function readline library])
+fi
+
+])# PGAC_CHECK_READLINE
# Readline versions < 2.1 don't have rl_completion_append_character
AC_DEFUN([PGAC_VAR_RL_COMPLETION_APPEND_CHARACTER],
-[AC_MSG_CHECKING([for rl_completion_append_character])
-AC_TRY_LINK([#include <stdio.h>
+[AC_CACHE_CHECK([for rl_completion_append_character], pgac_cv_var_rl_completion_append_character,
+[AC_TRY_LINK([#include <stdio.h>
#ifdef HAVE_READLINE_READLINE_H
# include <readline/readline.h>
#elif defined(HAVE_READLINE_H)
#endif
],
[rl_completion_append_character = 'x';],
-[AC_MSG_RESULT(yes)
+[pgac_cv_var_rl_completion_append_character=yes],
+[pgac_cv_var_rl_completion_append_character=no])])
+if test x"$pgac_cv_var_rl_completion_append_character" = x"yes"; then
AC_DEFINE(HAVE_RL_COMPLETION_APPEND_CHARACTER, 1,
- [Define to 1 if you have the global variable 'rl_completion_append_character'.])],
-[AC_MSG_RESULT(no)])])# PGAC_VAR_RL_COMPLETION_APPEND_CHARACTER
+ [Define to 1 if you have the global variable 'rl_completion_append_character'.])
+fi])# PGAC_VAR_RL_COMPLETION_APPEND_CHARACTER
# 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(gettext, intl, [],
+ 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])])
AC_MSG_ERROR([msgfmt is required for NLS])
fi
AC_CHECK_PROGS(MSGMERGE, msgmerge)
-dnl FIXME: We should probably check for version >=0.10.36.
AC_CHECK_PROGS(XGETTEXT, xgettext)
-
- # Note: share/locale is always the default, independent of $datadir
- localedir='${prefix}/share/locale'
- if test x"$prefix" = x"NONE"; then
- exp_localedir="$ac_default_prefix/share/locale"
- else
- exp_localedir="$prefix/share/locale"
- fi
-
- AC_SUBST(localedir)
- AC_DEFINE_UNQUOTED(LOCALEDIR, ["$exp_localedir"],
- [Define to the location of locale files.])
])# PGAC_CHECK_GETTEXT
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