From cad901a54fa7d0eb3ad17270a08d4824d50cfd51 Mon Sep 17 00:00:00 2001
From: Patrik Nyblom <pan@erlang.org>
Date: Tue, 8 Dec 2009 09:02:14 +0100
Subject: Teach configure --enable-m32-build for forcing a 32-bit build
---
erts/configure.in | 69 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 69 insertions(+)
(limited to 'erts')
diff --git a/erts/configure.in b/erts/configure.in
index 1892a7a1f4..03390de84b 100644
--- a/erts/configure.in
+++ b/erts/configure.in
@@ -226,6 +226,19 @@ AC_ARG_ENABLE(m64-build,
esac
],enable_m64_build=no)
+AC_ARG_ENABLE(m32-build,
+[ --enable-m32-build build 32bit binaries using the -m32 flag to (g)cc],
+[ case "$enableval" in
+ no) enable_m32_build=no ;;
+ *)
+ if test X${enable_darwin_64bit} = Xyes -o X${enable_m64_build} = Xyes;
+ then
+ AC_MSG_ERROR([(--enable-darwin-64bit or --enable-m64-build) and --enable-m32-build are mutually exclusive]) ;
+ fi ;
+ enable_m32_build=yes ;;
+ esac
+],enable_m32_build=no)
+
AC_ARG_ENABLE(fixalloc,
[ --disable-fixalloc disable the use of fix_alloc])
if test x${enable_fixalloc} = xno ; then
@@ -336,6 +349,17 @@ else
esac
;;
*)
+ if test X${enable_m32_build} = Xyes;
+ then
+ enable_hipe=no;
+ case $CFLAGS in
+ *-m32*)
+ ;;
+ *)
+ CFLAGS="-m32 $CFLAGS"
+ ;;
+ esac ;
+ fi
;;
esac
fi
@@ -433,6 +457,35 @@ CFLAGS="$CFLAGS $extra_flags"
DEBUG_CFLAGS="-g $CPPFLAGS $extra_flags"
DEBUG_FLAGS=-g
+dnl
+dnl Adjust DEBUG_CFLAGS to match CFLAGS in terms of -m
+dnl
+
+case $CFLAGS in
+ *-m64*)
+ case $DEBUG_CFLAGS in
+ *-m64*)
+ ;;
+ *)
+ DEBUG_CFLAGS="-m64 $DEBUG_CFLAGS"
+ ;;
+ esac
+ ;;
+ *-m32*)
+ case $DEBUG_CFLAGS in
+ *-m32*)
+ ;;
+ *)
+ DEBUG_CFLAGS="-m32 $DEBUG_CFLAGS"
+ ;;
+ esac
+ ;;
+ *)
+ ;;
+esac
+
+
+
CFLAG_RUNTIME_LIBRARY_PATH="-Wl,-R"
case $host_os in
darwin*)
@@ -628,6 +681,16 @@ case $ARCH-$OPSYS in
LDFLAGS="-m64 $LDFLAGS"
;;
esac
+ fi;
+ if test X${enable_m32_build} = Xyes; then
+ AC_MSG_NOTICE([Adjusting LDFLAGS to use -m32]) ;
+ case $LDFLAGS in
+ *-m32*)
+ ;;
+ *)
+ LDFLAGS="-m32 $LDFLAGS"
+ ;;
+ esac ;
fi
;;
esac
@@ -3184,6 +3247,9 @@ case $host_os in
DED_LDFLAGS="-shared -Wl,-Bsymbolic"
if test X${enable_m64_build} = Xyes; then
DED_LDFLAGS="-m64 $DED_LDFLAGS"
+ fi;
+ if test X${enable_m32_build} = Xyes; then
+ DED_LDFLAGS="-m32 $DED_LDFLAGS"
fi
;;
freebsd*)
@@ -3192,6 +3258,9 @@ case $host_os in
DED_LDFLAGS="-shared"
if test X${enable_m64_build} = Xyes; then
DED_LDFLAGS="-m64 $DED_LDFLAGS"
+ fi;
+ if test X${enable_m32_build} = Xyes; then
+ DED_LDFLAGS="-m32 $DED_LDFLAGS"
fi
;;
osf*)
--
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