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| author | Michael Ellerman <mpe@ellerman.id.au> | 2017-03-02 10:29:00 +0100 |
|---|---|---|
| committer | Matthew Wilcox <mawilcox@microsoft.com> | 2017-03-07 19:18:22 +0100 |
| commit | 284d96a494d705b9c5330c900e976fceda885b9f (patch) | |
| tree | e5be3d1096522234f28a05b13f4ca58506807842 | |
| parent | radix tree test suite: Build 32 bit binaries (diff) | |
| download | linux-284d96a494d705b9c5330c900e976fceda885b9f.tar.xz linux-284d96a494d705b9c5330c900e976fceda885b9f.zip | |
radix tree test suite: Fix build with --as-needed
Currently the radix tree test suite doesn't build with toolchains that
use --as-needed by default, for example Ubuntu's:
cc -I. -I../../include -g -O2 -Wall -D_LGPL_SOURCE -fsanitize=address -lpthread -lurcu main.o ... -o main
/usr/bin/ld: regression1.o: undefined reference to symbol 'pthread_join@@GLIBC_2.17'
/lib/powerpc64le-linux-gnu/libpthread.so.0: error adding symbols: DSO missing from command line
collect2: error: ld returned 1 exit status
This is caused by the custom makefile rules placing LDFLAGS before the
.o files that need the libraries.
We could fix it by using --no-as-needed, or rewriting the custom rules.
But we can also just drop the custom rules and move the libraries to
LDLIBS, and then the default rules work correctly - with the one caveat
that we need to add -fsanitize=address to LDFLAGS because that must be
passed to the linker as well as the compiler.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
| -rw-r--r-- | tools/testing/radix-tree/Makefile | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/tools/testing/radix-tree/Makefile b/tools/testing/radix-tree/Makefile index b59c2a9ef778..022488f50fc6 100644 --- a/tools/testing/radix-tree/Makefile +++ b/tools/testing/radix-tree/Makefile @@ -1,6 +1,7 @@ CFLAGS += -I. -I../../include -g -O2 -Wall -D_LGPL_SOURCE -fsanitize=address -LDFLAGS += -lpthread -lurcu +LDFLAGS += -fsanitize=address +LDLIBS+= -lpthread -lurcu TARGETS = main idr-test multiorder CORE_OFILES := radix-tree.o idr.o linux.o test.o find_bit.o OFILES = main.o $(CORE_OFILES) regression1.o regression2.o regression3.o \ @@ -17,13 +18,10 @@ endif targets: mapshift $(TARGETS) main: $(OFILES) - $(CC) $(CFLAGS) $(LDFLAGS) $^ -o main idr-test: idr-test.o $(CORE_OFILES) - $(CC) $(CFLAGS) $(LDFLAGS) $^ -o idr-test multiorder: multiorder.o $(CORE_OFILES) - $(CC) $(CFLAGS) $(LDFLAGS) $^ -o multiorder clean: $(RM) $(TARGETS) *.o radix-tree.c idr.c generated/map-shift.h |