perf tools: Fix build error on read only source.

[net-next-2.6.git] / tools / perf / Makefile

diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index dcb9700b88d2ec86c456c1185e99cf8b4619dfe4..4f1fa77c1feb0b7a854ab8a85bd21682cbc66377 100644 (file)
--- 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) $@ $<+ && \