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# $Header: /cvsroot/pgsql/config/programs.m4,v 1.7 2001/08/28 14:59:11 petere Exp $
# 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.
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=:
for pgac_dir in $PATH; do
if test -z "$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
if $pgac_candidate --version | grep '2\.5\.3' >/dev/null 2>&1; then
pgac_broken_flex=$pgac_candidate
continue
fi
pgac_cv_path_flex=$pgac_candidate
break 2
fi
fi
done
done
IFS=$pgac_save_IFS
rm -f conftest.l
: ${pgac_cv_path_flex=no}
fi
])[]dnl AC_CACHE_CHECK
if test x"$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 $pgac_broken_flex contains a bug. You
*** should get version 2.5.4 or later.])
fi
AC_MSG_WARN([
*** Without Flex you will not be able to build PostgreSQL from CVS or
*** change any of the scanner definition files. You can obtain Flex from
*** a GNU mirror site. (If you are using the official distribution of
*** PostgreSQL then you do not need to worry about this because the Flex
*** output is pre-generated.)])
fi
if test x"$pgac_cv_path_flex" = x"no"; then
FLEX=
else
FLEX=$pgac_cv_path_flex
fi
AC_SUBST(FLEX)
AC_SUBST(FLEXFLAGS)
])# PGAC_PATH_FLEX
# PGAC_CHECK_READLINE
# -------------------
# Check for the readline library and dependent libraries, either
# termcap or curses. Also try libedit, since NetBSD's is compatible.
# Add the required flags to LIBS, define HAVE_LIBREADLINE.
AC_DEFUN([PGAC_CHECK_READLINE],
[AC_REQUIRE([AC_CANONICAL_HOST])
AC_MSG_CHECKING([for readline])
AC_CACHE_VAL([pgac_cv_check_readline],
[pgac_cv_check_readline=no
for pgac_lib in "" " -ltermcap" " -lncurses" " -lcurses" ; do
for pgac_rllib in -lreadline -ledit ; do
pgac_save_LIBS=$LIBS
LIBS="${pgac_rllib}${pgac_lib} $LIBS"
AC_TRY_LINK_FUNC([readline], [[
# NetBSD and OpenBSD have a broken linker that does not
# recognize dependent libraries
case $host_os in netbsd* | openbsd* )
case $pgac_lib in
*curses*) ;;
*) pgac_lib=" -lcurses" ;;
esac
esac
pgac_cv_check_readline="${pgac_rllib}${pgac_lib}"
break 2
]])
LIBS=$pgac_save_LIBS
done
done
LIBS=$pgac_save_LIBS
])[]dnl AC_CACHE_VAL
if test "$pgac_cv_check_readline" != no ; then
AC_DEFINE(HAVE_LIBREADLINE)
LIBS="$pgac_cv_check_readline $LIBS"
AC_MSG_RESULT([yes ($pgac_cv_check_readline)])
else
AC_MSG_RESULT(no)
fi])# PGAC_CHECK_READLINE
# PGAC_CHECK_GETTEXT
# ------------------
AC_DEFUN([PGAC_CHECK_GETTEXT],
[
AC_SEARCH_LIBS(gettext, 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_CHECK_PROGS(MSGFMT, msgfmt)
if test -z "$MSGFMT"; then
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"],
[location of locale files])
])# PGAC_CHECK_GETTEXT
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