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author | Joel Sherrill <joel.sherrill@OARcorp.com> | 1998-10-14 19:42:45 +0000 |
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committer | Joel Sherrill <joel.sherrill@OARcorp.com> | 1998-10-14 19:42:45 +0000 |
commit | 946b3cb0cf91da6753b6a6e0f60b91d84fcdf097 (patch) | |
tree | c67fa01270f5c4db355ab291330c795f4962d8e0 /make/compilers | |
parent | Updated. (diff) | |
download | rtems-946b3cb0cf91da6753b6a6e0f60b91d84fcdf097.tar.bz2 |
Patch from Ralf Corsepius <corsepiu@faw.uni-ulm.de>:
2. "make profile" doesn't work. It aborts when building host-tools
for embedded targets. I didn't yet have enough time to fix this
problem. AFAIS this problem is related to handling of
LDFLAGS_PROFILE[|_V] in gcc.cfg.in. For host applications, we use
gcc for linking host applications, too. With profiling enabled
CFLAGS_PROFILE_V contains -pg and is used to compile, but
LDFLAGS_PROFILE_V is empty, hence -pg will not be passed to the
linker causing gcc to fail to link, because it can't resolve some
symbols introduced by compiling with -pg.
I am not sure if I can provide a patch for this - Ether it is trivial
to fix or requires basic work on host configuration ;-
Fixing this one was trivial - But hard to trace.
LDFLAGS_PROFILE_V needs to contain the same flags as CFLAGS_PROFILE_V,
if gcc is used for linking (What else should have been expected ?,
:-). The same problem was present for *_DEBUG_V, but apparently wasn't
noticed by anybody, because things didn't break, but were silently
ignored.
I fixed these problems by setting these flags in configure.in whenever
gcc is reported to be the host-compiler. For non-gcc host compilers
"make debug" and "make profile" now becomes the same as an ordinary
"make". This is a hack and addressing this problen could be more
sophisticated, but I don't think it gives much sense to support
compile variants for any host program (Who will ever try to
profile/debug host tools?). Therefore I don't think it's useful
to invest more effort into this problem.
Diffstat (limited to 'make/compilers')
-rw-r--r-- | make/compilers/gcc.cfg.in | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/make/compilers/gcc.cfg.in b/make/compilers/gcc.cfg.in index df4c11cb8c..590bacc213 100644 --- a/make/compilers/gcc.cfg.in +++ b/make/compilers/gcc.cfg.in @@ -54,7 +54,7 @@ CFLAGS_DEBUG_V=@CC_CFLAGS_DEBUG_V@ CFLAGS_DEBUG_OPTIMIZE_V= # profile flag; use gprof(1) -CFLAGS_PROFILE_V=-pg +CFLAGS_PROFILE_V=@CC_CFLAGS_PROFILE_V@ # default is to optimize CFLAGS_OPTIMIZE=$(CFLAGS_OPTIMIZE_V) @@ -91,7 +91,7 @@ LDFLAGS_DYNAMIC_V = ?? LDFLAGS_DYNAMIC_LIBNAME_V = -h $(DYNAMIC_VERSION_LIBNAME) # ld flags for profiling, debugging -LDFLAGS_PROFILE_V = +LDFLAGS_PROFILE_V = @CC_LDFLAGS_PROFILE_V@ LDFLAGS_DEBUG_V = LDFLAGS=$(LDFLAGS_PROFILE) $(LDFLAGS_DEBUG) $(LD_PATHS:%=-L %) |