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Message-ID: <20100701211331.GA28165@ghostprotocols.net> Date: Thu, 1 Jul 2010 18:13:31 -0300 From: Arnaldo Carvalho de Melo <acme@...radead.org> To: Borislav Petkov <bp@...64.org> Cc: Steven Rostedt <rostedt@...dmis.org>, Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...e.hu>, Frederic Weisbecker <fweisbec@...il.com>, LKML <linux-kernel@...r.kernel.org> Subject: Re: [PATCH 05/21] perf: rewire generic library stuff, p1 Em Thu, Jul 01, 2010 at 10:14:18PM +0200, Borislav Petkov escreveu: > From: Arnaldo Carvalho de Melo <acme@...radead.org> > Date: Thu, Jul 01, 2010 at 01:14:49PM -0400 > > But we have one other problem: > > [acme@...lia linux-2.6-tip]$ make O=~/git/build/perf -C tools/ > > make: Entering directory `/home/acme/git/linux-2.6-tip/tools' > > make[1]: Entering directory `/home/acme/git/linux-2.6-tip/tools/lib' > > make[1]: `lklib.a' is up to date. > > make[1]: Leaving directory `/home/acme/git/linux-2.6-tip/tools/lib' > > make[1]: Entering directory `/home/acme/git/linux-2.6-tip/tools/perf' > > GEN perf-archive > > make[1]: Leaving directory `/home/acme/git/linux-2.6-tip/tools/perf' > > make: Leaving directory `/home/acme/git/linux-2.6-tip/tools' > > [acme@...lia linux-2.6-tip]$ make O=~/git/build/perf -C tools/perf/ > > make: Entering directory `/home/acme/git/linux-2.6-tip/tools/perf' > > * new build flags or prefix > > CC /home/acme/git/build/perf/perf.o > > CC /home/acme/git/build/perf/builtin-annotate.o > > > > The logic that detects "new build flags or prefix" gets confused when we > > alternate between tools/ and tools/perf/, checking that. > > This might need an up-to-date check for the lklib.a archive first and > not do "new build flags or prefix" if it is. Yeah, this is a different > library and the logic doesn't know about it. I got sidetracked, but this is what is in $(O)/PERF-CFLAGS for make -C tools/ [acme@...lia linux-2.6-tip]$ cat ../build/perf/PERF-CFLAGS -ggdb3 -Wall -Wextra -std=gnu99 -Werror -O6 -D_FORTIFY_SOURCE=2 -Wformat -Wformat-security -Wformat-y2k -Wshadow -Winit-self -Wpacked -Wredundant-decls -Wstack-protector -Wstrict-aliasing=3 -Wswitch-default -Wswitch-enum -Wno-system-headers -Wundef -Wvolatile-register-var -Wwrite-strings -Wbad-function-cast -Wmissing-declarations -Wmissing-prototypes -Wnested-externs -Wold-style-definition -Wstrict-prototypes -Wdeclaration-after-statement -fstack-protector-all -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -I/home/acme/git/linux-2.6-tip/tools/lib -I/home/acme/git/linux-2.6-tip/tools/perf -I/home/acme/git/linux-2.6-tip/tools/perf/util/include -Iutil/include -Iarch/x86/include -I../lib/ -I/home/acme/git/build/perf/ -DLIBELF_NO_MMAP -I/usr/include/elfutils -DDWARF_SUPPORT -I/usr/include/slang -DSHA1_HEADER='<openssl/sha.h>' : /home/acme/bin:libexec/perf-core:share/perf-core/templates:/home/acme [acme@...lia linux-2.6-tip]$ And this is its contents if we use "make -C tools/perf/" -ggdb3 -Wall -Wextra -std=gnu99 -Werror -O6 -D_FORTIFY_SOURCE=2 -fstack-protector-all -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Iutil/include -Iarch/x86/include -I../lib/ -I/home/acme/git/build/perf/ -DLIBELF_NO_MMAP -I/usr/include/elfutils -DDWARF_SUPPORT -I/usr/include/slang -DSHA1_HEADER='<openssl/sha.h>' : /home/acme/bin:libexec/perf-core:share/perf-core/templates:/home/acme Its just a matter of making both match :-) - Arnaldo -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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