From 7035fd60088016c75814d08cf69c2d9492bba90a Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Tue, 13 Jul 2010 11:58:58 +0000
Subject: * configure.in (RUBY_DEFAULT_ARCH): adjust for target   cpu.
 [ruby-core:31243]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@28626 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 configure.in | 27 +++++++++++++++++++++++++--
 1 file changed, 25 insertions(+), 2 deletions(-)

(limited to 'configure.in')

diff --git a/configure.in b/configure.in
index a7c9610cca..e5c259f520 100644
--- a/configure.in
+++ b/configure.in
@@ -136,9 +136,20 @@ AC_ARG_WITH(arch,
 			  target platform]),
        [target_archs="$withval"], [unset target_archs])
 
+AC_DEFUN([RUBY_DEFAULT_ARCH], [
+AC_MSG_CHECKING([arch option])
+AS_CASE([$1],
+	[*64],        [ARCH_FLAG=-m64],
+	[[i[3-6]86]], [ARCH_FLAG=-m32],
+	[AC_MSG_ERROR(unknown target architecture: $target_archs)]
+	)
+AC_MSG_RESULT([$ARCH_FLAG])
+])
+
 AC_DEFUN([RUBY_UNIVERSAL_ARCH], [
-test ${CFLAGS+set} && CFLAGS=`echo "$CFLAGS" | sed 's/ *-arch  *[^ ]*//g'`
-test ${LDFLAGS+set} && LDFLAGS=`echo "$LDFLAGS" | sed 's/ *-arch  *[^ ]*//g'`
+# RUBY_UNIVERSAL_ARCH begin
+test ${CFLAGS+set} && CFLAGS=`echo "$CFLAGS" | sed -e 's/ *-arch  *[^ ]*//g' -e 's/ *-m32//g' -e 's/ *-m64//g'`
+test ${LDFLAGS+set} && LDFLAGS=`echo "$LDFLAGS" | sed 's/ *-arch  *[^ ]*//g' -e 's/ *-m32//g' -e 's/ *-m64//g'`
 unset ARCH_FLAG universal_binary universal_archnames
 if test ${target_archs+set}; then
     AC_MSG_CHECKING([target architectures])
@@ -172,6 +183,14 @@ if test ${target_archs+set}; then
 	target_cpu=universal
 	real_cross_compiling=$cross_compiling
     else
+	if test x"$target_cpu" != x"${target_archs}"; then
+	    echo 'int main(){return 0;}' > conftest.c
+	    if $CC $CFLAGS $ARCH_FLAG conftest.c > /dev/null 2>&1; then
+		rm -f conftest.* a.out
+	    else
+		RUBY_DEFAULT_ARCH("$target_archs")
+	    fi
+	fi
 	target_cpu=${target_archs}
     fi
     AS_CASE(["$target"], [-*], [ target="$target_cpu${target}"])
@@ -210,6 +229,7 @@ if test "${target_archs}" != "${rb_cv_target_archs-${target_archs}}"; then
 else
     rb_cv_target_archs=${target_archs}
 fi
+# RUBY_UNIVERSAL_ARCH end
 ])
 
 AC_ARG_ENABLE(load-relative,
@@ -264,6 +284,9 @@ AC_SUBST(COUTFLAG)
 
 RUBY_MINGW32
 RUBY_UNIVERSAL_ARCH
+if test "$target_cpu" != "$host_cpu" -a "$GCC" = yes -a "$cross_compiling" = no; then
+    RUBY_DEFAULT_ARCH("$target_cpu")
+fi
 
 AC_CHECK_TOOL(RANLIB, ranlib, :)
 AC_CHECK_TOOL(AR, ar)
-- 
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