Darwin: Don't use ARCHFLAGS to determine arch

The Darwin build uses ARCHFLAGS to control the architectures it
builds binaries for. However, this causes problems for standalone
builds which just do ./configure && make. So, if ARCHFLAGS is
undefined, ask gcc which architecture it thinks that it is
building for, and use that.

Change-Id: If9e7dc3c41ded5ac0593ae20ddd741690914a699
Reviewed-on: http://gerrit.openafs.org/1181
Reviewed-by: Derrick Brashear <shadow@dementia.org>
Tested-by: Derrick Brashear <shadow@dementia.org>

diff --git a/src/lwp/Makefile.in b/src/lwp/Makefile.in
index 64769d5..5821729 100644 (file)
--- a/src/lwp/Makefile.in
+++ b/src/lwp/Makefile.in
@@ -51,7 +51,7 @@ process.s:
        @echo Nothing to be done for process.s
 
 # Making process.o for $(SYS_NAME)
-process.o      : process.s process.i386.s process.c
+process.o      : process.s process.i386.s process.c lwp.o
        @set -x; case "$(SYS_NAME)" in \
        sun4c_51 | sun4c_52 | sun4m_51 | sun4m_52 | sun4c_53 | sun4m_53  | sun4_53 | sun4_52 | sun4_54 | sun4c_54 | sun4m_54 | sun4x_5* | arm_linux* ) \
                $(PATH_CPP) -P -I${TOP_INCDIR} ${srcdir}/process.s > process.ss; \
@@ -71,9 +71,13 @@ process.o    : process.s process.i386.s process.c
                $(RM) process.ss ;; \
        *_darwin* ) \
                $(RM) -f process.o ; \
-               ppc=`echo "${ARCHFLAGS}" | grep -q -w ppc && echo process.ppc.o` ; \
-               i386=`echo "${ARCHFLAGS}" | grep -q -w i386 && echo process.i386.o` ; \
-               amd64=`echo "${ARCHFLAGS}" | grep -q -w x86_64 && echo process.amd64.o` ; \
+               CURRENTBUILDARCH="${ARCHFLAGS}"; \
+               if [ -z "$${CURRENTBUILDARCH}" ] ; then \
+                   CURRENTBUILDARCH=`$(CC) -dM -E -xc /dev/null | grep 'ppc\|i386\|x86_64'`; \
+               fi; \
+               ppc=`echo $${CURRENTBUILDARCH} | grep -q ppc && echo process.ppc.o` ; \
+               i386=`echo $${CURRENTBUILDARCH} | grep -q i386 && echo process.i386.o` ; \
+               amd64=`echo $${CURRENTBUILDARCH} | grep -q x86_64 && echo process.amd64.o` ; \
                if [ -z "$${ppc}" -a -z "$${i386}" -a -z "$${amd64}" ] ; then \
                        if [ `arch` = ppc ] ; then \
                                ppc=yes ; \