Re: [PATCH] perf tools: Fix build error on read only source.
From: Arnaldo Carvalho de Melo
Date: Wed Aug 18 2010 - 15:10:15 EST
Em Wed, Aug 18, 2010 at 02:01:58PM -0300, Arnaldo Carvalho de Melo escreveu:
> Em Wed, Aug 18, 2010 at 01:56:42PM -0300, Arnaldo Carvalho de Melo escreveu:
> > Em Wed, Aug 18, 2010 at 04:27:45PM +0200, Peter Zijlstra escreveu:
> > > On Wed, 2010-08-18 at 11:16 -0300, Arnaldo Carvalho de Melo wrote:
> > > > rm -rf ~/build
> > > > make O=~/build
> > > >
> > > > and have everything work? Saving some keystrokes 8)
> > >
> > > The turn side is that if you typo the output dir you'll probably not
> > > ever find it again.. and you could have typed: rm -rf ~/build/* instead.
> >
> > Not something I'll argue too much :)
Ok, here it is, stolen directly from the toplevel kernel Makefile, will push to
Ingo today:
[acme@emilia linux-2.6-tip]$ rm -rf ~/git/build/perf
[acme@emilia linux-2.6-tip]$ make -j9 O=~/git/build/perf -C tools/perf
/bin/sh: line 0: cd: /home/acme/git/build/perf/: No such file or directory
make: Entering directory `/home/acme/git/linux-2.6-tip/tools/perf'
Makefile:12: *** output directory "/home/acme/git/build/perf/" does not exist. Stop.
make: Leaving directory `/home/acme/git/linux-2.6-tip/tools/perf'
[acme@emilia linux-2.6-tip]$ mkdir ~/git/build/perf
[acme@emilia linux-2.6-tip]$ make -j9 O=~/git/build/perf -C tools/perf
make: Entering directory `/home/acme/git/linux-2.6-tip/tools/perf'
MKDIR /home/acme/git/build/perf/bench
<SNIP>
PERF_VERSION = 2.6.36.rc1.2.g033a273.dirty
make: Leaving directory `/home/acme/git/linux-2.6-tip/tools/perf'
make: Entering directory `/home/acme/git/linux-2.6-tip/tools/perf'
GEN /home/acme/git/build/perf/common-cmds.h
* new build flags or prefix
GEN perf-archive
CC /home/acme/git/build/perf/builtin-annotate.o
<SNIP>
AR /home/acme/git/build/perf/libperf.a
LINK /home/acme/git/build/perf/perf
make: Leaving directory `/home/acme/git/linux-2.6-tip/tools/perf'
[acme@emilia linux-2.6-tip]$
- Arnaldo
diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index dcb9700..4f1fa77 100644
--- a/tools/perf/Makefile
+++ b/tools/perf/Makefile
@@ -5,6 +5,12 @@ endif
# The default target of this Makefile is...
all::
+ifneq ($(OUTPUT),)
+# check that the output directory actually exists
+OUTDIR := $(shell cd $(OUTPUT) && /bin/pwd)
+$(if $(OUTDIR),, $(error output directory "$(OUTPUT)" does not exist))
+endif
+
# Define V=1 to have a more verbose compile.
# Define V=2 to have an even more verbose compile.
#
@@ -931,15 +937,15 @@ $(OUTPUT)common-cmds.h: $(wildcard Documentation/perf-*.txt)
$(QUIET_GEN). util/generate-cmdlist.sh > $@+ && mv $@+ $@
$(patsubst %.sh,%,$(SCRIPT_SH)) : % : %.sh
- $(QUIET_GEN)$(RM) $@ $@+ && \
+ $(QUIET_GEN)$(RM) $(OUTPUT)$@ $(OUTPUT)$@+ && \
sed -e '1s|#!.*/sh|#!$(SHELL_PATH_SQ)|' \
-e 's|@SHELL_PATH@|$(SHELL_PATH_SQ)|' \
-e 's|@@PERL@@|$(PERL_PATH_SQ)|g' \
-e 's/@@PERF_VERSION@@/$(PERF_VERSION)/g' \
-e 's/@@NO_CURL@@/$(NO_CURL)/g' \
- $@.sh >$@+ && \
- chmod +x $@+ && \
- mv $@+ $(OUTPUT)$@
+ $@.sh > $(OUTPUT)$@+ && \
+ chmod +x $(OUTPUT)$@+ && \
+ mv $(OUTPUT)$@+ $(OUTPUT)$@
configure: configure.ac
$(QUIET_GEN)$(RM) $@ $<+ && \
diff --git a/tools/perf/feature-tests.mak b/tools/perf/feature-tests.mak
index ddb68e6..7a7b608 100644
--- a/tools/perf/feature-tests.mak
+++ b/tools/perf/feature-tests.mak
@@ -113,7 +113,7 @@ endef
# try-cc
# Usage: option = $(call try-cc, source-to-build, cc-options)
try-cc = $(shell sh -c \
- 'TMP="$(TMPOUT).$$$$"; \
+ 'TMP="$(OUTPUT)$(TMPOUT).$$$$"; \
echo "$(1)" | \
$(CC) -x c - $(2) -o "$$TMP" > /dev/null 2>&1 && echo y; \
rm -f "$$TMP"')
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