[sr-dev] git:master: makefile: use -fno_strict-overflow on gcc 4.2+

Module: sip-router Branch: master Commit: 9558980b9087ce3ff227941d33e7e5224568226e URL: http://git.sip-router.org/cgi-bin/gitweb.cgi/sip-router/?a=commit;h=9558980b...

Author: Andrei Pelinescu-Onciul andrei@iptel.org Committer: Andrei Pelinescu-Onciul andrei@iptel.org Date: Tue Sep 29 18:38:32 2009 +0200

makefile: use -fno_strict-overflow on gcc 4.2+

For gcc versions >= 4.2, use the -fno_strict_overflow compile option. This is needed to avoid gcc optimizations that assume signed overflow is undefined and does not wrap around (some parts of the code assume using two complement arithmetic and -fstrict-overflow might break them).

---

Makefile.defs | 102 ++++++++++++++++++++++++++++++++++++++++++++++++++++++-- 1 files changed, 98 insertions(+), 4 deletions(-)

diff --git a/Makefile.defs b/Makefile.defs index f262f43..e46aa03 100644 --- a/Makefile.defs +++ b/Makefile.defs @@ -69,6 +69,7 @@ # 2009-03-10 replaced DEFS with C_DEFS and INCLUDES with C_INCLUDES (DEFS # and INCLUDES are now used only for "temporary" defines/includes # inside modules or libs) (andrei) +# 2009-09-20 for gcc 4.2+ use -fno-strict-overflow (andrei)

# check if already included/exported @@ -305,8 +306,9 @@ ifneq (,$(findstring gcc, $(CC_LONGVER))) sed -e 's/[^0-9]*-(.*)/\1/'| \ sed -e 's/2.9.*/2.9x/' -e 's/3.[0-3]..*/3.0/' -e \ 's/3.[0-3]/3.0/' -e 's/3.[4-9]..*/3.4/' -e \ - 's/3.[4-9]/3.4/' -e 's/4.[0-9]..*/4.x/' -e \ - 's/4.[0-9]/4.x/' ) + 's/3.[4-9]/3.4/' -e 's/4.[0-1]..*/4.x/' -e \ + 's/4.[0-1]/4.x/' -e 's/4.[2-9]..*/4.2+/' -e \ + 's/4.[2-9]$$/4.2+/') endif

ifneq (, $(findstring Sun, $(CC_LONGVER))) @@ -670,6 +672,15 @@ ifeq ($(CC_NAME), gcc) C_DEFS+=-DCC_GCC_LIKE_ASM #common stuff CFLAGS=-g -O9 -funroll-loops -Wcast-align $(PROFILE) + #if gcc 4.2+ +ifeq ($(CC_SHORTVER), 4.2+) + CPU ?= athlon64 + CFLAGS+=-minline-all-stringops \ + -falign-loops \ + -ftree-vectorize \ + -fno-strict-overflow \ + -mtune=$(CPU) +else #if gcc 4.0+ ifeq ($(CC_SHORTVER), 4.x) CPU ?= athlon64 @@ -707,6 +718,7 @@ endif # CC_SHORTVER, 2.9x endif # CC_SHORTVER, 3.0 endif # CC_SHORTVER, 3.4 endif # CC_SHORTVER, 4.x +endif # CC_SHORTVER, 4.2+

else # CC_NAME, gcc ifeq ($(CC_NAME), icc) @@ -732,6 +744,15 @@ ifeq ($(CC_NAME), gcc) #common stuff CFLAGS=-m64 -g -O9 -funroll-loops -Wcast-align $(PROFILE) LDFLAGS+=-m64 + #if gcc 4.2+ +ifeq ($(CC_SHORTVER), 4.2+) + CPU ?= opteron + CFLAGS+=-minline-all-stringops \ + -falign-loops \ + -ftree-vectorize \ + -fno-strict-overflow \ + -mtune=$(CPU) +else #if gcc 4.0+ ifeq ($(CC_SHORTVER), 4.x) CPU ?= opteron @@ -769,6 +790,7 @@ endif # CC_SHORTVER, 2.9x endif # CC_SHORTVER, 3.0 endif # CC_SHORTVER, 3.4 endif # CC_SHORTVER, 4.x +endif # CC_SHORTVER, 4.2+

else # CC_NAME, gcc ifeq ($(CC_NAME), icc) @@ -800,6 +822,15 @@ ifeq ($(CC_NAME), gcc) # -m32 for 32 bit (default on solaris), # nothing for arch. default LDFLAGS+=-m64 + #if gcc 4.2+ +ifeq ($(CC_SHORTVER), 4.2+) + CPU ?= ultrasparc + #use 32bit for now + CFLAGS+=-mcpu=ultrasparc \ + -mtune=$(CPU) \ + -fno-strict-overflow \ + -ftree-vectorize +else #if gcc 4.x ifeq ($(CC_SHORTVER), 4.x) CPU ?= ultrasparc @@ -849,6 +880,7 @@ endif #CC_SHORTVER, 2.9x endif #CC_SHORTVER, 3.0 endif #CC_SHORTVER, 3.4 endif #CC_SHORTVER, 4.x +endif #CC_SHORTVER, 4.2+ else #CC_NAME, gcc ifeq ($(CC_NAME), suncc) @@ -872,6 +904,15 @@ ifeq ($(CC_NAME), gcc) CFLAGS=-g -O9 -funroll-loops $(PROFILE) \ #-Wcast-align \ #-Wmissing-prototypes + #if gcc 4.2+ +ifeq ($(CC_SHORTVER), 4.2+) + CPU ?= v8 + #use 32bit for now + CFLAGS+= -minline-all-stringops \ + -mtune=$(CPU) \ + -fno-strict-overflow \ + -ftree-vectorize +else #if gcc 4.x ifeq ($(CC_SHORTVER), 4.x) CPU ?= v8 @@ -907,6 +948,7 @@ endif #CC_SHORTVER, 2.9x endif #CC_SHORTVER, 3.0 endif #CC_SHORTVER, 3.4 endif #CC_SHORTVER, 4.x +endif #CC_SHORTVER, 4.2+ else #CC_NAME, gcc ifeq ($(CC_NAME), suncc) @@ -927,6 +969,11 @@ ifeq ($(CC_NAME), gcc) C_DEFS+=-DCC_GCC_LIKE_ASM #common stuff CFLAGS=-O9 -funroll-loops $(PROFILE) + #if gcc 4.2+ +ifeq ($(CC_SHORTVER), 4.2+) + CFLAGS+= -ftree-vectorize -fno-strict-overflow + # not supported on arm: -minline-all-stringops +else #if gcc 4.x+ ifeq ($(CC_SHORTVER), 4.x) CFLAGS+= -ftree-vectorize @@ -954,7 +1001,8 @@ $(warning You are using an old and unsupported gcc \ endif # CC_SHORTVER, 2.9x endif # CC_SHORTVER, 3.0 endif # CC_SHORTVER, 3.4 -endif # CC_SHORTVER, 4.0 +endif # CC_SHORTVER, 4.x +endif # CC_SHORTVER, 4.2+ else # CC_NAME, gcc #other compilers @@ -970,6 +1018,10 @@ ifeq ($(CC_NAME), gcc) #common stuff CFLAGS=-march=armv6 -O9 -funroll-loops \ $(PROFILE) + #if gcc 4.2+ +ifeq ($(CC_SHORTVER), 4.2+) + CFLAGS+= -ftree-vectorize -fno-strict-overflow +else #if gcc 4.x+ ifeq ($(CC_SHORTVER), 4.x) CFLAGS+= -ftree-vectorize @@ -996,7 +1048,8 @@ $(warning You are using an old and unsupported gcc \ endif # CC_SHORTVER, 2.9x endif # CC_SHORTVER, 3.0 endif # CC_SHORTVER, 3.4 -endif # CC_SHORTVER, 4.0 +endif # CC_SHORTVER, 4.x +endif # CC_SHORTVER, 4.2+ else # CC_NAME, gcc #other compilers @@ -1011,6 +1064,11 @@ ifeq ($(CC_NAME), gcc) C_DEFS+=-DCC_GCC_LIKE_ASM #common stuff CFLAGS=-O9 -funroll-loops $(PROFILE) + #if gcc 4.2+ +ifeq ($(CC_SHORTVER), 4.2+) + CFLAGS+=-march=r3000 -minline-all-stringops \ + -ftree-vectorize -fno-strict-overflow +else #if gcc 4.0+ ifeq ($(CC_SHORTVER), 4.x) CFLAGS+=-march=r3000 -minline-all-stringops \ @@ -1038,6 +1096,7 @@ endif # CC_SHORTVER, 2.9x endif # CC_SHORTVER, 3.0 endif # CC_SHORTVER, 3.4 endif # CC_SHORTVER, 4.x +endif # CC_SHORTVER, 4.2+ else # CC_NAME, gcc #other compilers @@ -1052,6 +1111,11 @@ ifeq ($(CC_NAME), gcc) C_DEFS+=-DCC_GCC_LIKE_ASM #common stuff CFLAGS= -mips2 -O9 -funroll-loops $(PROFILE) + #if gcc 4.2+ +ifeq ($(CC_SHORTVER), 4.2+) + CFLAGS+=-minline-all-stringops -ftree-vectorize \ + -fno-strict-overflow +else #if gcc 4.0+ ifeq ($(CC_SHORTVER), 4.x) CFLAGS+=-minline-all-stringops -ftree-vectorize @@ -1077,6 +1141,7 @@ endif # CC_SHORTVER, 2.9x endif # CC_SHORTVER, 3.0 endif # CC_SHORTVER, 3.4 endif # CC_SHORTVER, 4.x +endif # CC_SHORTVER, 4.2+ else # CC_NAME, gcc #other compilers @@ -1091,6 +1156,11 @@ ifeq ($(CC_NAME), gcc) C_DEFS+=-DCC_GCC_LIKE_ASM #common stuff CFLAGS= -mips64 -O9 -funroll-loops $(PROFILE) + #if gcc 4.2+ +ifeq ($(CC_SHORTVER), 4.2+) + CFLAGS+=-minline-all-stringops -ftree-vectorize \ + -fno-strict-overflow +else #if gcc 4.0+ ifeq ($(CC_SHORTVER), 4.x) CFLAGS+=-minline-all-stringops -ftree-vectorize @@ -1116,6 +1186,7 @@ endif # CC_SHORTVER, 2.9x endif # CC_SHORTVER, 3.0 endif # CC_SHORTVER, 3.4 endif # CC_SHORTVER, 4.x +endif # CC_SHORTVER, 4.2+ else # CC_NAME, gcc #other compilers @@ -1130,6 +1201,11 @@ ifeq ($(CC_NAME), gcc) C_DEFS+=-DCC_GCC_LIKE_ASM #common stuff CFLAGS= -O9 -funroll-loops $(PROFILE) + #if gcc 4.2+ +ifeq ($(CC_SHORTVER), 4.2+) + CFLAGS+= -fno-strict-overflow + # not supported: -minline-all-stringops +else #if gcc 4.0+ ifeq ($(CC_SHORTVER), 4.x) CFLAGS+= @@ -1156,6 +1232,7 @@ endif # CC_SHORTVER, 2.9x endif # CC_SHORTVER, 3.0 endif # CC_SHORTVER, 3.4 endif # CC_SHORTVER, 4.x +endif # CC_SHORTVER, 4.2+ else # CC_NAME, gcc #other compilers @@ -1170,6 +1247,13 @@ ifeq ($(CC_NAME), gcc) C_DEFS+=-DCC_GCC_LIKE_ASM #common stuff CFLAGS= -O9 -funroll-loops $(PROFILE) + #if gcc 4.2+ +ifeq ($(CC_SHORTVER), 4.2+) + CPU ?= powerpc + CFLAGS+=-ftree-vectorize \ + -fno-strict-overflow \ + -mtune=$(CPU) -maltivec +else #if gcc 4.0+ ifeq ($(CC_SHORTVER), 4.x) CPU ?= powerpc @@ -1197,6 +1281,7 @@ endif # CC_SHORTVER, 2.9x endif # CC_SHORTVER, 3.0 endif # CC_SHORTVER, 3.4 endif # CC_SHORTVER, 4.x +endif # CC_SHORTVER, 4.2+ else # CC_NAME, gcc #other compilers @@ -1211,6 +1296,14 @@ ifeq ($(CC_NAME), gcc) C_DEFS+=-DCC_GCC_LIKE_ASM #common stuff CFLAGS= -O9 -funroll-loops $(PROFILE) + #if gcc 4.2+ +ifeq ($(CC_SHORTVER), 4.2+) + CPU ?= powerpc64 + CFLAGS+=-ftree-vectorize \ + -fno-strict-overflow \ + -mtune=$(CPU) -maltivec +else + #if gcc 4.0+ ifeq ($(CC_SHORTVER), 4.x) CPU ?= powerpc64 CFLAGS+=-ftree-vectorize \ @@ -1237,6 +1330,7 @@ endif # CC_SHORTVER, 2.9x endif # CC_SHORTVER, 3.0 endif # CC_SHORTVER, 3.4 endif # CC_SHORTVER, 4.x +endif # CC_SHORTVER, 4.2+ else # CC_NAME, gcc #other compilers