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[Xen-devel] [PATCH] tools/libxl: Correct static pattern rule for pkgconfig files

Attempting to build libxl causes Make to emit the following warnings

andrewcoop@andrewcoop:xen.git$ make -C tools/libxl all
Makefile:253: target `xenlight.pc' doesn't match the target pattern
Makefile:253: target `xlutil.pc' doesn't match the target pattern

because the static pattern rule is malformed.  'Makefile' as the only
prereq-pattern does not contain a pattern.

The rule ends up working because of the use of $@.in where $< should have been
used, but lacked any dependency between a $FOO.pc and its .in source file.

Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
CC: Ian Campbell <Ian.Campbell@xxxxxxxxxx>
CC: Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>
CC: Wei Liu <wei.liu2@xxxxxxxxxx>
 tools/libxl/Makefile |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/libxl/Makefile b/tools/libxl/Makefile
index 5df4970..7329521 100644
--- a/tools/libxl/Makefile
+++ b/tools/libxl/Makefile
@@ -250,8 +250,8 @@ libxl-save-helper: $(SAVE_HELPER_OBJS) libxenlight.so
 testidl: testidl.o libxlutil.so libxenlight.so
        $(CC) $(LDFLAGS) -o $@ testidl.o libxlutil.so $(LDLIBS_libxenlight) 
$(LDLIBS_libxenctrl) $(APPEND_LDFLAGS)
-$(PKG_CONFIG): %.in : Makefile
-       @sed -e 's/@@version@@/$(MAJOR).$(MINOR)/g' < $@.in > $@.new
+$(PKG_CONFIG): % : %.in Makefile
+       @sed -e 's/@@version@@/$(MAJOR).$(MINOR)/g' < $< > $@.new
        @mv -f $@.new $@
 .PHONY: install

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