[Buildroot] [git commit] Makefile: valgrind needs non-stripped dynamic linker library
Thomas Petazzoni
thomas.petazzoni at free-electrons.com
Thu Dec 17 22:21:17 UTC 2015
commit: http://git.buildroot.net/buildroot/commit/?id=1edb4c51dee78d7d26700c037f29558e73d27ee0
branch: http://git.buildroot.net/buildroot/commit/?id=refs/heads/master
Fixes the following valgrind error (tested on freescale imx6):
valgrind: Fatal error at startup: a function redirection
valgrind: which is mandatory for this platform-tool combination
valgrind: cannot be set up. Details of the redirection are:
valgrind:
valgrind: A must-be-redirected function
valgrind: whose name matches the pattern: strcmp
valgrind: in an object with soname matching: ld-linux-armhf.so.3
valgrind: was not found whilst processing
valgrind: symbols from the object with soname: ld-linux-armhf.so.3
valgrind:
valgrind: Possible fixes: (1, short term): install glibc's debuginfo
valgrind: package on this machine. (2, longer term): ask the packagers
valgrind: for your Linux distribution to please in future ship a non-
valgrind: stripped ld.so (or whatever the dynamic linker .so is called)
valgrind: that exports the above-named function using the standard
valgrind: calling conventions for this platform. The package you need
valgrind: to install for fix (1) is called
Note that we can still strip the dynamic linker, but only strip the
debugging symbols and nothing else.
[Thomas: slightly adjust comment in the code.]
Signed-off-by: Peter Seiderer <ps.report at gmx.net>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni at free-electrons.com>
---
Makefile | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/Makefile b/Makefile
index 8e8514e..dc657d9 100644
--- a/Makefile
+++ b/Makefile
@@ -473,11 +473,12 @@ STRIP_FIND_CMD += -type f \( -perm /111 -o -name '*.so*' \)
# file exclusions:
# - libpthread.so: a non-stripped libpthread shared library is needed for
# proper debugging of pthread programs using gdb.
+# - ld.so: a non-stripped dynamic linker library is needed for valgrind
# - kernel modules (*.ko): do not function properly when stripped like normal
# applications and libraries. Normally kernel modules are already excluded
# by the executable permission check above, so the explicit exclusion is only
# done for kernel modules with incorrect permissions.
-STRIP_FIND_CMD += -not \( $(call findfileclauses,libpthread*.so* *.ko $(call qstrip,$(BR2_STRIP_EXCLUDE_FILES))) \) -print0
+STRIP_FIND_CMD += -not \( $(call findfileclauses,libpthread*.so* ld-*.so* *.ko $(call qstrip,$(BR2_STRIP_EXCLUDE_FILES))) \) -print0
ifeq ($(BR2_ECLIPSE_REGISTER),y)
define TOOLCHAIN_ECLIPSE_REGISTER
@@ -590,6 +591,11 @@ ifeq ($(BR2_TOOLCHAIN_HAS_THREADS),y)
xargs -r $(STRIPCMD) $(STRIP_STRIP_DEBUG)
endif
+# Valgrind needs ld.so with enough information, so only strip
+# debugging symbols.
+ find $(TARGET_DIR)/lib -type f -name 'ld-*.so*' | \
+ xargs -r $(STRIPCMD) $(STRIP_STRIP_DEBUG)
+
mkdir -p $(TARGET_DIR)/etc
# Mandatory configuration file and auxiliary cache directory
# for recent versions of ldconfig
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