[PATCH 1/3] RTEMS: Use MULTILIB_REQUIRED for PowerPC

[Sebastian Huber]

This patch should be applied to GCC 4.9 and mainline.  I do not have
write access, so in case this gets approved, please commit it for me.

gcc/ChangeLog
2014-12-15  Sebastian Huber  <sebastian.huber at embedded-brains.de>

	* config/rs6000/t-rtems: Use MULTILIB_REQUIRED instead of
	MULTILIB_EXCEPTIONS.
---
 gcc/config/rs6000/t-rtems | 65 +++++++++++++++++------------------------------
 1 file changed, 24 insertions(+), 41 deletions(-)

diff --git a/gcc/config/rs6000/t-rtems b/gcc/config/rs6000/t-rtems
index 426f75a..3ebcfaa 100644
--- a/gcc/config/rs6000/t-rtems
+++ b/gcc/config/rs6000/t-rtems
@@ -18,16 +18,18 @@
 # along with GCC; see the file COPYING3.  If not see
 # <http://www.gnu.org/licenses/>.
 
-MULTILIB_OPTIONS	= \
-mcpu=403/mcpu=505/mcpu=603e/mcpu=604/mcpu=860/mcpu=7400/mcpu=8540 \
-msoft-float/mfloat-gprs=double
+MULTILIB_OPTIONS =
+MULTILIB_DIRNAMES =
+MULTILIB_MATCHES =
+MULTILIB_EXCEPTIONS =
+MULTILIB_REQUIRED =
+
+MULTILIB_OPTIONS += mcpu=403/mcpu=505/mcpu=603e/mcpu=604/mcpu=860/mcpu=7400/mcpu=8540
+MULTILIB_DIRNAMES += m403 m505 m603e m604 m860 m7400 m8540
 
-MULTILIB_DIRNAMES	= \
-m403 m505 m603e m604 m860 m7400 m8540 \
-nof gprsdouble
+MULTILIB_OPTIONS += msoft-float/mfloat-gprs=double
+MULTILIB_DIRNAMES += nof gprsdouble
 
-# MULTILIB_MATCHES	= ${MULTILIB_MATCHES_FLOAT}
-MULTILIB_MATCHES	=
 MULTILIB_MATCHES  	+= ${MULTILIB_MATCHES_ENDIAN}
 MULTILIB_MATCHES	+= ${MULTILIB_MATCHES_SYSV}
 # Map 405 to 403
@@ -52,37 +54,18 @@ MULTILIB_MATCHES	+= mcpu?8540=mcpu?8548
 # (mfloat-gprs=single is implicit default)
 MULTILIB_MATCHES	+= mcpu?8540=mcpu?8540/mfloat-gprs?single
 
-# Soft-float only, default implies msoft-float
-# NOTE: Must match with MULTILIB_MATCHES_FLOAT and MULTILIB_MATCHES
-MULTILIB_SOFTFLOAT_ONLY = \
-*mcpu=401/*msoft-float* \
-*mcpu=403/*msoft-float* \
-*mcpu=405/*msoft-float* \
-*mcpu=801/*msoft-float* \
-*mcpu=821/*msoft-float* \
-*mcpu=823/*msoft-float* \
-*mcpu=860/*msoft-float*
-
-# Hard-float only, take out msoft-float
-MULTILIB_HARDFLOAT_ONLY = \
-*mcpu=505/*msoft-float*
-
-# Targets which do not support gprs
-MULTILIB_NOGPRS = \
-mfloat-gprs=* \
-*mcpu=403/*mfloat-gprs=* \
-*mcpu=505/*mfloat-gprs=* \
-*mcpu=603e/*mfloat-gprs=* \
-*mcpu=604/*mfloat-gprs=* \
-*mcpu=860/*mfloat-gprs=* \
-*mcpu=7400/*mfloat-gprs=*
-
-MULTILIB_EXCEPTIONS =
-
-# Disallow -Dppc and -Dmpc without other options
-MULTILIB_EXCEPTIONS 	+= Dppc* Dmpc*
+# Enumeration of multilibs
 
-MULTILIB_EXCEPTIONS	+= \
-${MULTILIB_SOFTFLOAT_ONLY} \
-${MULTILIB_HARDFLOAT_ONLY} \
-${MULTILIB_NOGPRS}
+MULTILIB_REQUIRED += msoft-float
+MULTILIB_REQUIRED += mcpu=403
+MULTILIB_REQUIRED += mcpu=505
+MULTILIB_REQUIRED += mcpu=603e
+MULTILIB_REQUIRED += mcpu=603e/msoft-float
+MULTILIB_REQUIRED += mcpu=604
+MULTILIB_REQUIRED += mcpu=604/msoft-float
+MULTILIB_REQUIRED += mcpu=7400
+MULTILIB_REQUIRED += mcpu=7400/msoft-float
+MULTILIB_REQUIRED += mcpu=8540
+MULTILIB_REQUIRED += mcpu=8540/msoft-float
+MULTILIB_REQUIRED += mcpu=8540/mfloat-gprs=double
+MULTILIB_REQUIRED += mcpu=860
-- 
1.8.4.5