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| -rw-r--r-- | Rules.mak | 15 |
1 files changed, 13 insertions, 2 deletions
@@ -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 |