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b4e936859d
Remove the contents of $Config{ldflags} from ExtUtils::Embed's ldopts,
like we already do with $Config{ccdlflags}. Those flags are the
choices of those who built the Perl installation, which are not
necessarily appropriate for building PostgreSQL. What we really want
from ldopts are the options identifying the location and name of the
libperl library, but unfortunately it doesn't appear possible to get
that separately from the other stuff.
The motivation for this was to strip -mmacosx-version-min options. We
already did something similar for the -arch option. Both of those are
now covered by this more general approach.
Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us>
Reviewed-by: Andres Freund <andres@anarazel.de>
Discussion: https://www.postgresql.org/message-id/flat/8c4fcb72-2574-ff7c-4c25-1f032d4a2a57%40enterprisedb.com
115 lines
4.6 KiB
Plaintext
115 lines
4.6 KiB
Plaintext
# config/perl.m4
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# PGAC_PATH_PERL
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# --------------
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AC_DEFUN([PGAC_PATH_PERL],
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[PGAC_PATH_PROGS(PERL, perl)
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AC_ARG_VAR(PERL, [Perl program])dnl
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if test "$PERL"; then
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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']`
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AC_MSG_NOTICE([using perl $pgac_perl_version])
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if echo "$pgac_perl_version" | sed ['s/[.a-z_]/ /g'] | \
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$AWK '{ if ([$]1 == 5 && ([$]2 > 8 || ($[2] == 8 && [$]3 >= 3))) exit 1; else exit 0;}'
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then
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AC_MSG_WARN([
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*** The installed version of Perl, $PERL, is too old to use with PostgreSQL.
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*** Perl version 5.8.3 or later is required, but this is $pgac_perl_version.])
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PERL=""
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fi
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fi
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if test -z "$PERL"; then
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AC_MSG_WARN([
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*** Without Perl you will not be able to build PostgreSQL from Git.
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*** You can obtain Perl from any CPAN mirror site.
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*** (If you are using the official distribution of PostgreSQL then you do not
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*** need to worry about this, because the Perl output is pre-generated.)])
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fi
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])# PGAC_PATH_PERL
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# PGAC_CHECK_PERL_CONFIG(NAME)
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# ----------------------------
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AC_DEFUN([PGAC_CHECK_PERL_CONFIG],
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[AC_REQUIRE([PGAC_PATH_PERL])
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AC_MSG_CHECKING([for Perl $1])
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perl_$1=`$PERL -MConfig -e 'print $Config{$1}'`
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test "$PORTNAME" = "win32" && perl_$1=`echo $perl_$1 | sed 's,\\\\,/,g'`
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AC_SUBST(perl_$1)dnl
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AC_MSG_RESULT([$perl_$1])])
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# PGAC_CHECK_PERL_CONFIGS(NAMES)
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# ------------------------------
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AC_DEFUN([PGAC_CHECK_PERL_CONFIGS],
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[m4_foreach([pgac_item], [$1], [PGAC_CHECK_PERL_CONFIG(pgac_item)])])
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# PGAC_CHECK_PERL_EMBED_CCFLAGS
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# -----------------------------
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# We selectively extract stuff from $Config{ccflags}. For debugging purposes,
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# let's have the configure output report the raw ccflags value as well as the
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# set of flags we chose to adopt. We don't really need anything except -D
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# switches, and other sorts of compiler switches can actively break things if
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# Perl was compiled with a different compiler. Moreover, although Perl likes
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# to put stuff like -D_LARGEFILE_SOURCE and -D_FILE_OFFSET_BITS=64 here, it
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# would be fatal to try to compile PL/Perl to a different libc ABI than core
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# Postgres uses. The available information says that most symbols that affect
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# Perl's own ABI begin with letters, so it's almost sufficient to adopt -D
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# switches for symbols not beginning with underscore. Some exceptions are the
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# Windows-specific -D_USE_32BIT_TIME_T and -D__MINGW_USE_VC2005_COMPAT; see
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# Mkvcbuild.pm for details. We absorb the former when Perl reports it. Perl
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# never reports the latter, and we don't attempt to deduce when it's needed.
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# Consequently, we don't support using MinGW to link to MSVC-built Perl. As
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# of 2017, all supported ActivePerl and Strawberry Perl are MinGW-built. If
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# that changes or an MSVC-built Perl distribution becomes prominent, we can
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# revisit this limitation.
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AC_DEFUN([PGAC_CHECK_PERL_EMBED_CCFLAGS],
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[AC_REQUIRE([PGAC_PATH_PERL])
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AC_MSG_CHECKING([for CFLAGS recommended by Perl])
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perl_ccflags=`$PERL -MConfig -e ['print $Config{ccflags}']`
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AC_MSG_RESULT([$perl_ccflags])
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AC_MSG_CHECKING([for CFLAGS to compile embedded Perl])
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perl_embed_ccflags=`$PERL -MConfig -e ['foreach $f (split(" ",$Config{ccflags})) {print $f, " " if ($f =~ /^-D[^_]/ || $f =~ /^-D_USE_32BIT_TIME_T/)}']`
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AC_SUBST(perl_embed_ccflags)dnl
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AC_MSG_RESULT([$perl_embed_ccflags])
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])# PGAC_CHECK_PERL_EMBED_CCFLAGS
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# PGAC_CHECK_PERL_EMBED_LDFLAGS
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# -----------------------------
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# We are after Embed's ldopts, but without the subset mentioned in
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# Config's ccdlflags and ldflags. (Those are the choices of those who
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# built the Perl installation, which are not necessarily appropriate
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# for building PostgreSQL.)
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AC_DEFUN([PGAC_CHECK_PERL_EMBED_LDFLAGS],
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[AC_REQUIRE([PGAC_PATH_PERL])
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AC_MSG_CHECKING(for flags to link embedded Perl)
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if test "$PORTNAME" = "win32" ; then
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perl_lib=`basename $perl_archlibexp/CORE/perl[[5-9]]*.lib .lib`
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if test -e "$perl_archlibexp/CORE/$perl_lib.lib"; then
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perl_embed_ldflags="-L$perl_archlibexp/CORE -l$perl_lib"
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else
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perl_lib=`basename $perl_archlibexp/CORE/libperl[[5-9]]*.a .a | sed 's/^lib//'`
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if test -e "$perl_archlibexp/CORE/lib$perl_lib.a"; then
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perl_embed_ldflags="-L$perl_archlibexp/CORE -l$perl_lib"
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fi
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fi
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else
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pgac_tmp1=`$PERL -MExtUtils::Embed -e ldopts`
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pgac_tmp2=`$PERL -MConfig -e 'print "$Config{ccdlflags} $Config{ldflags}"'`
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perl_embed_ldflags=`echo X"$pgac_tmp1" | sed -e "s/^X//" -e "s%$pgac_tmp2%%"`
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fi
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AC_SUBST(perl_embed_ldflags)dnl
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if test -z "$perl_embed_ldflags" ; then
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AC_MSG_RESULT(no)
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AC_MSG_ERROR([could not determine flags for linking embedded Perl.
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This probably means that ExtUtils::Embed or ExtUtils::MakeMaker is not
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installed.])
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else
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AC_MSG_RESULT([$perl_embed_ldflags])
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fi
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])# PGAC_CHECK_PERL_EMBED_LDFLAGS
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