diff options
Diffstat (limited to 'config/perl.m4')
| -rw-r--r-- | config/perl.m4 | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/config/perl.m4 b/config/perl.m4 new file mode 100644 index 0000000..059e31c --- /dev/null +++ b/config/perl.m4 @@ -0,0 +1,114 @@ +# config/perl.m4 + + +# PGAC_PATH_PERL +# -------------- +AC_DEFUN([PGAC_PATH_PERL], +[PGAC_PATH_PROGS(PERL, perl) +AC_ARG_VAR(PERL, [Perl program])dnl + +if test "$PERL"; then + pgac_perl_version=`$PERL -v 2>/dev/null | sed -n ['s/This is perl.*v[a-z ]*\([0-9]\.[0-9][0-9.]*\).*$/\1/p']` + AC_MSG_NOTICE([using perl $pgac_perl_version]) + if echo "$pgac_perl_version" | sed ['s/[.a-z_]/ /g'] | \ + $AWK '{ if ([$]1 == 5 && [$]2 >= 8) exit 1; else exit 0;}' + then + AC_MSG_WARN([ +*** The installed version of Perl, $PERL, is too old to use with PostgreSQL. +*** Perl version 5.8 or later is required, but this is $pgac_perl_version.]) + PERL="" + fi +fi + +if test -z "$PERL"; then + AC_MSG_WARN([ +*** Without Perl you will not be able to build PostgreSQL from Git. +*** You can obtain Perl from any CPAN mirror site. +*** (If you are using the official distribution of PostgreSQL then you do not +*** need to worry about this, because the Perl output is pre-generated.)]) +fi +])# PGAC_PATH_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{$1}'` +test "$PORTNAME" = "win32" && perl_$1=`echo $perl_$1 | sed 's,\\\\,/,g'` +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_CCFLAGS +# ----------------------------- +# We selectively extract stuff from $Config{ccflags}. For debugging purposes, +# let's have the configure output report the raw ccflags value as well as the +# set of flags we chose to adopt. We don't really need anything except -D +# switches, and other sorts of compiler switches can actively break things if +# Perl was compiled with a different compiler. Moreover, although Perl likes +# to put stuff like -D_LARGEFILE_SOURCE and -D_FILE_OFFSET_BITS=64 here, it +# would be fatal to try to compile PL/Perl to a different libc ABI than core +# Postgres uses. The available information says that most symbols that affect +# Perl's own ABI begin with letters, so it's almost sufficient to adopt -D +# switches for symbols not beginning with underscore. Some exceptions are the +# Windows-specific -D_USE_32BIT_TIME_T and -D__MINGW_USE_VC2005_COMPAT; see +# Mkvcbuild.pm for details. We absorb the former when Perl reports it. Perl +# never reports the latter, and we don't attempt to deduce when it's needed. +# Consequently, we don't support using MinGW to link to MSVC-built Perl. As +# of 2017, all supported ActivePerl and Strawberry Perl are MinGW-built. If +# that changes or an MSVC-built Perl distribution becomes prominent, we can +# revisit this limitation. +AC_DEFUN([PGAC_CHECK_PERL_EMBED_CCFLAGS], +[AC_REQUIRE([PGAC_PATH_PERL]) +AC_MSG_CHECKING([for CFLAGS recommended by Perl]) +perl_ccflags=`$PERL -MConfig -e ['print $Config{ccflags}']` +AC_MSG_RESULT([$perl_ccflags]) +AC_MSG_CHECKING([for CFLAGS to compile embedded Perl]) +perl_embed_ccflags=`$PERL -MConfig -e ['foreach $f (split(" ",$Config{ccflags})) {print $f, " " if ($f =~ /^-D[^_]/ || $f =~ /^-D_USE_32BIT_TIME_T/)}']` +AC_SUBST(perl_embed_ccflags)dnl +AC_MSG_RESULT([$perl_embed_ccflags]) +])# PGAC_CHECK_PERL_EMBED_CCFLAGS + + +# 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) +if test "$PORTNAME" = "win32" ; then + perl_lib=`basename $perl_archlibexp/CORE/perl[[5-9]]*.lib .lib` + if test -e "$perl_archlibexp/CORE/$perl_lib.lib"; then + perl_embed_ldflags="-L$perl_archlibexp/CORE -l$perl_lib" + else + perl_lib=`basename $perl_archlibexp/CORE/libperl[[5-9]]*.a .a | sed 's/^lib//'` + if test -e "$perl_archlibexp/CORE/lib$perl_lib.a"; then + perl_embed_ldflags="-L$perl_archlibexp/CORE -l$perl_lib" + fi + fi +else + pgac_tmp1=`$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%$pgac_tmp2%%" -e ["s/ -arch [-a-zA-Z0-9_]*//g"]` +fi +AC_SUBST(perl_embed_ldflags)dnl +if test -z "$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 |