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authorH.J. Lu <hjl.tools@gmail.com>2024-05-09 20:07:01 -0700
committerH.J. Lu <hjl.tools@gmail.com>2024-05-10 06:16:48 -0700
commit6fc6b074ea78adc35e2e2df71e6cea1f4d35c9f0 (patch)
tree4294b9aca4022a006404e4390c06597cc3400771
parent3d443b8d6a5e19edb5392d772685a58c5fb2310b (diff)
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Force DT_RPATH for --enable-hardcoded-path-in-tests
On Fedora 40/x86-64, linker enables --enable-new-dtags by default which
generates DT_RUNPATH instead of DT_RPATH.  Unlike DT_RPATH, DT_RUNPATH
only applies to DT_NEEDED entries in the executable and doesn't applies
to DT_NEEDED entries in shared libraries which are loaded via DT_NEEDED
entries in the executable.  Some glibc tests have libstdc++.so.6 in
DT_NEEDED, which has libm.so.6 in DT_NEEDED.  When DT_RUNPATH is generated,
/lib64/libm.so.6 is loaded for such tests.  If the newly built glibc is
older than glibc 2.36, these tests fail with

assert/tst-assert-c++: /export/build/gnu/tools-build/glibc-gitlab-release/build-x86_64-linux/libc.so.6: version `GLIBC_2.36' not found (required by /lib64/libm.so.6)
assert/tst-assert-c++: /export/build/gnu/tools-build/glibc-gitlab-release/build-x86_64-linux/libc.so.6: version `GLIBC_ABI_DT_RELR' not found (required by /lib64/libm.so.6)

Pass -Wl,--disable-new-dtags to linker when building glibc tests with
--enable-hardcoded-path-in-tests.  This fixes BZ #31719.

Signed-off-by: H.J. Lu <hjl.tools@gmail.com>
(cherry picked from commit 2dcaf70643710e22f92a351e36e3cff8b48c60dc)
-rw-r--r--Makeconfig7
1 files changed, 6 insertions, 1 deletions
diff --git a/Makeconfig b/Makeconfig
index 4d9d337d00..a53b41b403 100644
--- a/Makeconfig
+++ b/Makeconfig
@@ -562,8 +562,13 @@ ifeq (yes,$(build-shared))
 link-libc-rpath = -Wl,-rpath=$(rpath-link)
 link-libc-rpath-link = -Wl,-rpath-link=$(rpath-link)
 
+# Tests use -Wl,-rpath instead of -Wl,-rpath-link for
+# build-hardcoded-path-in-tests.  Add -Wl,--disable-new-dtags to force
+# DT_RPATH instead of DT_RUNPATH which only applies to DT_NEEDED entries
+# in the executable and doesn't applies to DT_NEEDED entries in shared
+# libraries which are loaded via DT_NEEDED entries in the executable.
 ifeq (yes,$(build-hardcoded-path-in-tests))
-link-libc-tests-rpath-link = $(link-libc-rpath)
+link-libc-tests-rpath-link = $(link-libc-rpath) -Wl,--disable-new-dtags
 else
 link-libc-tests-rpath-link = $(link-libc-rpath-link)
 endif  # build-hardcoded-path-in-tests