diff options
Diffstat (limited to 'meta/recipes-devtools/pseudo/files/older-glibc-symbols.patch')
| -rw-r--r-- | meta/recipes-devtools/pseudo/files/older-glibc-symbols.patch | 57 |
1 files changed, 57 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..c453b5f735 --- /dev/null +++ b/meta/recipes-devtools/pseudo/files/older-glibc-symbols.patch @@ -0,0 +1,57 @@ +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 and nativesdk] +Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org> + +Tweak library search order, make prebuilt lib ahead of recipe lib +Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com> +--- + Makefile.in | 2 +- + pseudo_wrappers.c | 5 ++++- + 2 files changed, 5 insertions(+), 2 deletions(-) + +diff --git a/Makefile.in b/Makefile.in +--- a/Makefile.in ++++ b/Makefile.in +@@ -120,7 +120,7 @@ $(PSEUDODB): pseudodb.o $(SHOBJS) $(DBOBJS) pseudo_ipc.o | $(BIN) + libpseudo: $(LIBPSEUDO) + + $(LIBPSEUDO): $(WRAPOBJS) pseudo_client.o pseudo_ipc.o $(SHOBJS) | $(LIB) +- $(CC) $(CFLAGS) $(CFLAGS_PSEUDO) -shared -o $(LIBPSEUDO) \ ++ $(CC) $(CFLAGS) -Lprebuilt/$(shell uname -m)-linux/lib/ $(CFLAGS_PSEUDO) -shared -o $(LIBPSEUDO) \ + pseudo_client.o pseudo_ipc.o \ + $(WRAPOBJS) $(SHOBJS) $(LDFLAGS) $(CLIENT_LDFLAGS) + +diff --git a/pseudo_wrappers.c b/pseudo_wrappers.c +--- a/pseudo_wrappers.c ++++ b/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(); +-- +2.27.0 + |