blob: 64381a9569789209368ed370294f22176d410d1c [file] [log] [blame]
From 3841592e7aa4649eb9413d6a9bc514a5cee4b787 Mon Sep 17 00:00:00 2001
From: Michael Ellerman <>
Date: Thu, 20 Feb 2020 22:37:48 +1100
Subject: [PATCH] selftests/rseq: Fix out-of-tree compilation
commit ef89d0545132d685f73da6f58b7e7fe002536f91 upstream.
Currently if you build with O=... the rseq tests don't build:
$ make O=$PWD/output -C tools/testing/selftests/ TARGETS=rseq
make: Entering directory '/linux/tools/testing/selftests'
make[1]: Entering directory '/linux/tools/testing/selftests/rseq'
gcc -O2 -Wall -g -I./ -I../../../../usr/include/ -L./ -Wl,-rpath=./ -shared -fPIC rseq.c -lpthread -o /linux/output/rseq/
gcc -O2 -Wall -g -I./ -I../../../../usr/include/ -L./ -Wl,-rpath=./ basic_test.c -lpthread -lrseq -o /linux/output/rseq/basic_test
/usr/bin/ld: cannot find -lrseq
collect2: error: ld returned 1 exit status
This is because the library search path points to the source
directory, not the output.
We can fix it by changing the library search path to $(OUTPUT).
Signed-off-by: Michael Ellerman <>
Signed-off-by: Shuah Khan <>
Signed-off-by: Paul Gortmaker <>
diff --git a/tools/testing/selftests/rseq/Makefile b/tools/testing/selftests/rseq/Makefile
index f1053630bb6f..2af9d39a9716 100644
--- a/tools/testing/selftests/rseq/Makefile
+++ b/tools/testing/selftests/rseq/Makefile
@@ -4,7 +4,7 @@ ifneq ($(shell $(CC) --version 2>&1 | head -n 1 | grep clang),)
CLANG_FLAGS += -no-integrated-as
-CFLAGS += -O2 -Wall -g -I./ -I../../../../usr/include/ -L./ -Wl,-rpath=./ \
+CFLAGS += -O2 -Wall -g -I./ -I../../../../usr/include/ -L$(OUTPUT) -Wl,-rpath=./ \
LDLIBS += -lpthread