From 96b6b3fccd9974883a70761131b2daec116b755c Mon Sep 17 00:00:00 2001 From: "Peter S. Mazinger" Date: Thu, 27 Oct 2005 12:44:11 +0000 Subject: Hope to catch --combine flag properly on all gcc versions --- Rules.mak | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) (limited to 'Rules.mak') diff --git a/Rules.mak b/Rules.mak index bf0d111e8..4b305a562 100644 --- a/Rules.mak +++ b/Rules.mak @@ -259,8 +259,19 @@ endif OPTIMIZATION+=$(call check_gcc,-Os,-O2) # Use the gcc 3.4 -funit-at-a-time optimization when available OPTIMIZATION+=$(call check_gcc,-funit-at-a-time,) -# gcc 4.x needs -fcombine, else building all sources at once fails -OPTIMIZATION+=$(call check_gcc,-fcombine,) + +# we try to compile all sources at once into an object (IMA), but +# gcc-3.3.x does not support it +# gcc-3.4.x supports it, but does not need and support --combine +# gcc-4.0.x supports it, supports the --combine flag, but does not need it +# gcc-4.1(200506xx) supports it, but needs the --combine flag, else libs are useless +GCC_VER?=$(shell $(CC) -dumpversion | cut -d . -f 1,2) +ifeq ($(GCC_VER),3.3) +# not supported +DOMULTI=n +else +OPTIMIZATION+=$(call check_gcc,--combine,) +endif # Add a bunch of extra pedantic annoyingly strict checks XWARNINGS=$(subst ",, $(strip $(WARNINGS))) -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing -- cgit v1.2.3