In particular, gcc complains as follows:
CC sparse-llvm.o
<command line>:1:1: warning: "__STDC_CONSTANT_MACROS" redefined
<command line>:1:1: warning: this is the location of the previous definition
<command line>:1:1: warning: "__STDC_FORMAT_MACROS" redefined
<command line>:1:1: warning: this is the location of the previous definition
<command line>:1:1: warning: "__STDC_LIMIT_MACROS" redefined
<command line>:1:1: warning: this is the location of the previous definition
The warnings are caused by the macros being defined twice on the
gcc command line. These command line -D macro definitions come
originally from the output of 'llvm-config --cflags', which is
recorded in the $(LLVM_CFLAGS) variable. This variable is then
included in the $(BASIC_CFLAGS) variable twice due to duplication
of the target-specific additions to the BASIC_CFLAGS, viz:
sparse-llvm_EXTRA_DEPS := sparse-llvm.o
sparse-llvm.o $(sparse-llvm_EXTRA_DEPS): BASIC_CFLAGS += $(LLVM_CFLAGS)
In order to suppress the warnings, we remove the duplication of
the sparse-llvm.o target in the above rule.
Signed-off-by: Ramsay Jones <ramsay@xxxxxxxxxxxxxxxxxxx>
---
Makefile | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/Makefile b/Makefile
index 35e3801..ba2ba85 100644
--- a/Makefile
+++ b/Makefile
@@ -90,7 +90,7 @@ LLVM_LIBS := $(shell llvm-config --libs)
PROGRAMS += $(LLVM_PROGS)
INST_PROGRAMS += sparse-llvm sparsec
sparse-llvm_EXTRA_DEPS := sparse-llvm.o
-sparse-llvm.o $(sparse-llvm_EXTRA_DEPS): BASIC_CFLAGS += $(LLVM_CFLAGS)
+$(sparse-llvm_EXTRA_DEPS): BASIC_CFLAGS += $(LLVM_CFLAGS)
sparse-llvm_EXTRA_OBJS := $(LLVM_LIBS)
endif
endif
--
1.8.2
--
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