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authorPaul E. Murphy <murphyp@linux.ibm.com>2022-06-01 16:19:49 +0000
committerPaul E. Murphy <murphyp@linux.ibm.com>2022-06-08 11:17:47 -0500
commitaa13fd16183949bbc40b010552e2e42003ebee62 (patch)
treeccd9b9e3852b5fd7f32bcf6d6db99cfa256beb14
parentc2f39be490150aa748bc74d78d7ee122188a30cf (diff)
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nptl_db: disable DT_RELR on libthread_db.so
Some nptl tests inadvertently use the host's gdb to verify libthread_db.so, which is loaded with the host's runtime. This causes a couple of test failures when the host glibc does not support DT_RELR. The not correct, but simple, workaround is to build without DT_RELR as this library is otherwise likely to load on glibc 2.17 and newer today. This allows tst-pthread-gdb-attach{,-static} to continue working when testing on a gdb loaded with an older glibc. This avoids a failure in tst-pthread-gdb-attach similar to: Trying host libthread_db library: .../build/glibc/nptl_db/libthread_db.so.1. dlopen failed: /lib64/libc.so.6: version `GLIBC_ABI_DT_RELR' not found (required by .../build/glibc/nptl_db/libthread_db.so.1). Reviewed-by: Carlos O'Donell <carlos@redhat.com>
-rw-r--r--nptl_db/Makefile6
1 files changed, 6 insertions, 0 deletions
diff --git a/nptl_db/Makefile b/nptl_db/Makefile
index ed923a4..2360e53 100644
--- a/nptl_db/Makefile
+++ b/nptl_db/Makefile
@@ -49,6 +49,12 @@ libthread_db-inhibit-o = $(filter-out .os,$(object-suffixes))
# The ps_* callback functions are not defined.
libthread_db.so-no-z-defs = yes
+# This is a hack. This is not the correct solution. When this glibc
+# is tested, the gdb used could be loaded by the host glibc, which
+# may not support DT_RELR, and report a failure instead of unsupported.
+# For now, build this without DT_RELR support to avoid this situation.
+libthread_db.so-no-dt-relr = yes
+
tests-special += $(objpfx)db-symbols.out
include ../Rules