# $PostgreSQL: pgsql/config/perl.m4,v 1.5 2009/09/08 18:15:55 tgl Exp $


# PGAC_PATH_PERL
# --------------
AC_DEFUN([PGAC_PATH_PERL],
[AC_PATH_PROG(PERL, perl)])


# PGAC_CHECK_PERL_CONFIG(NAME)
# ----------------------------
AC_DEFUN([PGAC_CHECK_PERL_CONFIG],
[AC_REQUIRE([PGAC_PATH_PERL])
AC_MSG_CHECKING([for Perl $1])
perl_$1=`$PERL -MConfig -e 'print $Config{$1}'`
AC_SUBST(perl_$1)dnl
AC_MSG_RESULT([$perl_$1])])


# PGAC_CHECK_PERL_CONFIGS(NAMES)
# ------------------------------
AC_DEFUN([PGAC_CHECK_PERL_CONFIGS],
[m4_foreach([pgac_item], [$1], [PGAC_CHECK_PERL_CONFIG(pgac_item)])])


# PGAC_CHECK_PERL_EMBED_LDFLAGS
# -----------------------------
# We are after Embed's ldopts, but without the subset mentioned in
# Config's ccdlflags; and also without any -arch flags, which recent
# Apple releases put in unhelpfully.  (If you want a multiarch build
# you'd better be specifying it in more places than plperl's final link.)
AC_DEFUN([PGAC_CHECK_PERL_EMBED_LDFLAGS],
[AC_REQUIRE([PGAC_PATH_PERL])
AC_MSG_CHECKING(for flags to link embedded Perl)
pgac_tmp1=`$PERL -MExtUtils::Embed -e ldopts`
pgac_tmp2=`$PERL -MConfig -e 'print $Config{ccdlflags}'`
perl_embed_ldflags=`echo X"$pgac_tmp1" | sed -e "s/^X//" -e "s%$pgac_tmp2%%" -e ["s/ -arch [-a-zA-Z0-9_]*//g"]`
AC_SUBST(perl_embed_ldflags)dnl
if test -z "$perl_embed_ldflags" ; then
	AC_MSG_RESULT(no)
	AC_MSG_ERROR([could not determine flags for linking embedded Perl.
This probably means that ExtUtils::Embed or ExtUtils::MakeMaker is not
installed.])
else
	AC_MSG_RESULT([$perl_embed_ldflags])
fi
])# PGAC_CHECK_PERL_EMBED_LDFLAGS