1 files changed, 49 insertions, 0 deletions

diff --git a/meta/recipes-devtools/pseudo/files/older-glibc-symbols.patch b/meta/recipes-devtools/pseudo/files/older-glibc-symbols.patch
new file mode 100644
index 0000000000..1552c69b52
--- /dev/null
+++ b/meta/recipes-devtools/pseudo/files/older-glibc-symbols.patch
@@ -0,0 +1,49 @@
+If we link against a newer glibc 2.34 and then try and our LD_PRELOAD is run against a
+binary on a host with an older libc, we see symbol errors since in glibc 2.34, pthread 
+and dl are merged into libc itself.
+
+We need to use the older form of linking so use glibc binaries from an older release
+to force this. We only use minimal symbols from these anyway.
+
+pthread_atfork is problematic, particularly on arm so use the internal glibc routine
+it maps too. This was always present in the main libc from 2.3.2 onwards.
+
+Yes this is horrible. Better solutions welcome.
+
+There is more info in the bug: [YOCTO #14521]
+
+Upstream-Status: Inappropriate [this patch is native only]
+Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
+
+Index: git/Makefile.in
+===================================================================
+--- git.orig/Makefile.in
++++ git/Makefile.in
+@@ -122,7 +122,7 @@ libpseudo: $(LIBPSEUDO)
+ $(LIBPSEUDO): $(WRAPOBJS) pseudo_client.o pseudo_ipc.o $(SHOBJS) | $(LIB)
+        $(CC) $(CFLAGS) $(CFLAGS_PSEUDO) -shared -o $(LIBPSEUDO) \
+                pseudo_client.o pseudo_ipc.o \
+-               $(WRAPOBJS) $(SHOBJS) $(LDFLAGS) $(CLIENT_LDFLAGS)
++               $(WRAPOBJS) $(SHOBJS) $(LDFLAGS) -Lprebuilt/$(shell uname -m)-linux/lib/ $(CLIENT_LDFLAGS)
+ 
+ # *everything* now relies on stuff that's generated in the
+ # wrapper process.
+Index: git/pseudo_wrappers.c
+===================================================================
+--- git.orig/pseudo_wrappers.c
++++ git/pseudo_wrappers.c
+@@ -100,10 +100,13 @@ static void libpseudo_atfork_child(void)
+        pseudo_mutex_holder = 0;
+ }
+ 
++extern void *__dso_handle;
++extern int __register_atfork (void (*) (void), void (*) (void), void (*) (void), void *);
++
+ static void
+ _libpseudo_init(void) {
+        if (!_libpseudo_initted)
+-               pthread_atfork(NULL, NULL, libpseudo_atfork_child);
++               __register_atfork (NULL, NULL, libpseudo_atfork_child, &__dso_handle == NULL ? NULL : __dso_handle);
+ 
+        pseudo_getlock();
+        pseudo_antimagic();