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2b2183b321
A toolchain uclibc-ng-1.0.43, binutils-2.40 and gcc-13.2.0 hits the following error when building: ld.bfd: isl_test2.o: non-canonical reference to canonical protected function `__pthread_key_create' in x86_64-multilib-linux-uclibc/sysroot/lib64/libc.so.1 ld.bfd: failed to set dynamic section sizes: bad value The reference comes from libgcc where it is using the __pthread_key_create() symbol to detect the use of pthreads with GNU libc. Prevent this on uclibc-ng with an explicit condition. https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111322 Signed-off-by: Chris Packham <judge.packham@gmail.com>
36 lines
1.3 KiB
Diff
36 lines
1.3 KiB
Diff
From d901175d36221fbf79a0eb8305823b88243b829c Mon Sep 17 00:00:00 2001
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From: Chris Packham <chris.packham@alliedtelesis.co.nz>
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Date: Thu, 7 Sep 2023 19:26:49 +1200
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Subject: [PATCH] libgcc: Exclude UCLIBC from GLIBC thread check
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UBLIBC defines __GLIBC__ but also marks __pthread_key_create() as
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protected. Leading to link errors with newer binutils such as:
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ld.bfd: isl_test_cpp17.o: non-canonical reference to canonical protected function `__pthread_key_create' in x86_64-multilib-linux-uclibc/sysroot/lib64/libc.so.1
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ld.bfd: failed to set dynamic section sizes: bad value
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Add a condition on !__UCLIBC__ when selecting a symbol to detect pthread
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usage so it picks the intended pthread_cancel().
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Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
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---
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libgcc/gthr-posix.h | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/libgcc/gthr-posix.h b/libgcc/gthr-posix.h
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index aebcfdd9f4ca..087a631d308d 100644
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--- a/libgcc/gthr-posix.h
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+++ b/libgcc/gthr-posix.h
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@@ -233,7 +233,7 @@ __gthread_active_p (void)
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library does not provide pthread_cancel, so we do use pthread_create
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there (and interceptor libraries lose). */
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-#ifdef __GLIBC__
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+#if defined(__GLIBC__) && !defined(__UCLIBC__)
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__gthrw2(__gthrw_(__pthread_key_create),
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__pthread_key_create,
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pthread_key_create)
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--
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2.42.0
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