refactor split configure.ac into files

This does not (yet) change anything. The generated configure file
is the identical to previous one (except several empty lines added
and deleted).

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61981 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 89 insertions, 0 deletions

diff --git a/tool/m4/ruby_universal_arch.m4 b/tool/m4/ruby_universal_arch.m4
new file mode 100644
index 0000000000..e87946387f
--- /dev/null
+++ b/tool/m4/ruby_universal_arch.m4
@@ -0,0 +1,89 @@
+AC_DEFUN([RUBY_UNIVERSAL_ARCH], [
+# RUBY_UNIVERSAL_ARCH begin
+ARCH_FLAG=`expr " $CXXFLAGS " : ['.* \(-m[0-9][0-9]*\) ']`
+test ${CXXFLAGS+set} && CXXFLAGS=`echo "$CXXFLAGS" | sed [-e 's/ *-arch  *[^ ]*//g' -e 's/ *-m32//g' -e 's/ *-m64//g']`
+ARCH_FLAG=`expr " $CFLAGS " : ['.* \(-m[0-9][0-9]*\) ']`
+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 [-e 's/ *-arch  *[^ ]*//g' -e 's/ *-m32//g' -e 's/ *-m64//g']`
+unset universal_binary universal_archnames
+AS_IF([test ${target_archs+set}], [
+    AC_MSG_CHECKING([target architectures])
+    target_archs=`echo $target_archs | tr , ' '`
+    # /usr/lib/arch_tool -archify_list $TARGET_ARCHS
+    for archs in $target_archs
+    do
+	AS_CASE([",$universal_binary,"],[*",$archs,"*], [],[
+	    cpu=`$SHELL "$ac_aux_dir/config.sub" "${archs}-${target_os}" 2>&1` || {
+	        AC_MSG_RESULT([failed])
+		AC_MSG_ERROR([$cpu])
+	    }
+	    cpu=`echo $cpu | sed 's/-.*-.*//'`
+	    universal_binary="${universal_binary+$universal_binary,}$cpu"
+	    universal_archnames="${universal_archnames} ${archs}=${cpu}"
+	    ARCH_FLAG="${ARCH_FLAG+$ARCH_FLAG }-arch $archs"
+	    ])
+    done
+    target_archs="$universal_binary"
+    unset universal_binary
+    AS_CASE(["$target_archs"],
+      [*,*], [universal_binary=yes],
+             [unset universal_archnames])
+    AC_MSG_RESULT([$target_archs])
+
+    target=`echo $target | sed "s/^$target_cpu-/-/"`
+    target_alias=`echo $target_alias | sed "s/^$target_cpu-/-/"`
+    AS_IF([test "${universal_binary-no}" = yes], [
+	AC_SUBST(try_header,try_compile)
+	target_cpu=universal
+	real_cross_compiling=$cross_compiling
+    ], [
+	AS_IF([test x"$target_cpu" != x"${target_archs}"], [
+	    echo 'int main(){return 0;}' > conftest.c
+	    AS_IF([$CC $CFLAGS $ARCH_FLAG -o conftest conftest.c > /dev/null 2>&1], [
+		rm -fr conftest.*
+	    ], [
+		RUBY_DEFAULT_ARCH("$target_archs")
+	    ])
+	])
+	target_cpu=${target_archs}
+    ])
+    AS_CASE(["$target"], [-*], [ target="$target_cpu${target}"])
+    AS_CASE(["$target_alias"], [-*], [ target_alias="$target_cpu${target_alias}"])
+], [
+    AS_IF([test x"$target_alias" = x], [
+	AS_CASE(["$target_os"],
+	  [darwin*], [
+	    AC_MSG_CHECKING([for real target cpu])
+	    target=`echo $target | sed "s/^$target_cpu-/-/"`
+	    target_cpu=`$CC -E - 2>/dev/null <<EOF |
+#ifdef __x86_64__
+"processor-name=x86_64"
+#endif
+#ifdef __i386__
+"processor-name=i386"
+#endif
+#ifdef __ppc__
+"processor-name=powerpc"
+#endif
+#ifdef __ppc64__
+"processor-name=powerpc64"
+#endif
+EOF
+	    sed -n 's/^"processor-name=\(.*\)"/\1/p'`
+	    target="$target_cpu${target}"
+	    AC_MSG_RESULT([$target_cpu])
+	    ])
+    ])
+    target_archs="$target_cpu"
+])
+AS_IF([test "${target_archs}" != "${rb_cv_target_archs-${target_archs}}"], [
+    AC_MSG_ERROR([target arch(s) has changed from ${rb_cv_target_archs-nothing} to ${target_archs}])
+], [
+    rb_cv_target_archs=${target_archs}
+])
+AS_IF([test "x${ARCH_FLAG}" != x], [
+    CFLAGS="${CFLAGS:+$CFLAGS }${ARCH_FLAG}"
+    LDFLAGS="${LDFLAGS:+$LDFLAGS }${ARCH_FLAG}"
+])
+# RUBY_UNIVERSAL_ARCH end
+])dnl