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authorMichael Ellerman <mpe@ellerman.id.au>2017-03-02 12:29:00 +0300
committerMatthew Wilcox <mawilcox@microsoft.com>2017-03-07 21:18:22 +0300
commit284d96a494d705b9c5330c900e976fceda885b9f (patch)
treee5be3d1096522234f28a05b13f4ca58506807842 /tools
parentc4634b08d9eb9c13be2296230bf33c79390dbf9c (diff)
downloadlinux-284d96a494d705b9c5330c900e976fceda885b9f.tar.xz
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>
Diffstat (limited to 'tools')
-rw-r--r--tools/testing/radix-tree/Makefile6
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