From: Johannes Pointner <johannes.point...@br-automation.com>
If DISTRO_FEATURE usrmerge is enabled, SLIBDIR is just a symlink to LIBDIR.
ldconfig-native uses hardcoded paths for SLIBDIR and LIBDIR that are fine for
the not usrmerge case. But if usrmerge is enabled ldconfig-native generates a
ld.so.cache for the target, which is done in rootfs.py, that looks like this:
236 libs found in cache `/etc/ld.so.cache'
libzstd.so.1 (libc6) => /lib/libzstd.so.1
libz.so.1 (libc6) => /lib/libz.so.1
libxtables.so.12 (libc6) => /lib/libxtables.so.12
libxslt.so.1 (libc6) => /lib/libxslt.so.1
libxml2.so.2 (libc6) => /lib/libxml2.so.2
But it should look like this, which it does in case of not usrmerge:
236 libs found in cache `/etc/ld.so.cache'
libzstd.so.1 (libc6) => /usr/lib/libzstd.so.1
libz.so.1 (libc6) => /usr/lib/libz.so.1
libxtables.so.12 (libc6) => /usr/lib/libxtables.so.12
libxslt.so.1 (libc6) => /usr/lib/libxslt.so.1
libxml2.so.2 (libc6) => /usr/lib/libxml2.so.2
As this is part of the generated image(target) this breaks for example the
Qt QLibraryInfo paths if Qt is configured 'relocatable' and leads to the issue
that the QtWebEngine can find the QtWebEngineProcess,
Qt WebEngine resources,...
In the case of Qt this issue appears because Qt tries to determine the library
locations using dladdr and uses this as base to access QtWebEngineProcess or
Qt Webengine resources.
Therefore don't let ldconfig-native parse SLIBDIR if it is a symlink.
Signed-off-by: Johannes Pointner <johannes.point...@br-automation.com>
---
v3: enhanced explanation
v2: fixed sendemail.from and enhanced explanation
.../ldconfig-add-usrmerge-support.patch | 37 +++++++++++++++++++
.../glibc/ldconfig-native_2.12.1.bb | 1 +
2 files changed, 38 insertions(+)
create mode 100644
meta/recipes-core/glibc/ldconfig-native-2.12.1/ldconfig-add-usrmerge-support.patch
diff --git
a/meta/recipes-core/glibc/ldconfig-native-2.12.1/ldconfig-add-usrmerge-support.patch
b/meta/recipes-core/glibc/ldconfig-native-2.12.1/ldconfig-add-usrmerge-support.patch
new file mode 100644
index 0000000000..3041d433fd
--- /dev/null
+++
b/meta/recipes-core/glibc/ldconfig-native-2.12.1/ldconfig-add-usrmerge-support.patch
@@ -0,0 +1,37 @@
+From 6e543f39f6bec6eb2e02eea02029c7f4ec533b66 Mon Sep 17 00:00:00 2001
+From: Johannes Pointner <johannes.point...@br-automation.com>
+Date: Fri, 1 Dec 2023 11:02:39 +0100
+Subject: [PATCH] ldconfig: add usrmerge support
+
+Check whether SLIBDIR is a symlink, which is the case if usrmerge
+is enabled, and if so, ignore it.
+
+Upstream-Status: Inappropriate [embedded specific]
+
+Signed-off-by: Johannes Pointner <johannes.point...@br-automation.com>
+---
+ ldconfig.c | 8 +++++++-
+ 1 file changed, 7 insertions(+), 1 deletion(-)
+
+diff --git a/ldconfig.c b/ldconfig.c
+index e826410..72ac67b 100644
+--- a/ldconfig.c
++++ b/ldconfig.c
+@@ -1371,10 +1371,16 @@ main (int argc, char **argv)
+
+ if (!opt_only_cline)
+ {
++ struct stat buf;
++ int ret;
+ parse_conf (config_file, true);
+
+ /* Always add the standard search paths. */
+- add_system_dir (SLIBDIR);
++ /* Check whether SLIBDIR is a symlink, which is the case if usrmerge
++ is enabled, and if so, ignore it. */
++ ret = lstat(SLIBDIR ,&buf);
++ if(ret == -1 || !S_ISLNK(buf.st_mode))
++ add_system_dir (SLIBDIR);
+ if (strcmp (SLIBDIR, LIBDIR))
+ add_system_dir (LIBDIR);
+ add_system_dir (SLIBDIR32);
diff --git a/meta/recipes-core/glibc/ldconfig-native_2.12.1.bb
b/meta/recipes-core/glibc/ldconfig-native_2.12.1.bb
index 4db67c3ad4..85fc87257d 100644
--- a/meta/recipes-core/glibc/ldconfig-native_2.12.1.bb
+++ b/meta/recipes-core/glibc/ldconfig-native_2.12.1.bb
@@ -16,6 +16,7 @@ SRC_URI = "file://ldconfig-native-2.12.1.tar.bz2 \
file://add-64-bit-flag-for-ELF64-entries.patch \
file://no-aux-cache.patch \
file://add-riscv-support.patch \
+ file://ldconfig-add-usrmerge-support.patch \
"
--
2.43.0
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