Date: Wed, 20 Feb 2019 19:22:20 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 235896] Clang 6.0.1 passes incorrect parameters to ld when build shared object Message-ID: <bug-235896-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D235896 Bug ID: 235896 Summary: Clang 6.0.1 passes incorrect parameters to ld when build shared object Product: Base System Version: 12.0-RELEASE Hardware: amd64 OS: Any Status: New Severity: Affects Some People Priority: --- Component: bin Assignee: bugs@FreeBSD.org Reporter: jguojun@gmail.com "-Wl,-r " is a compiler switch to pass linker option "-r" for building shar= ed objects, and this should work for all CC and GCC compilers on different Unix platforms. This works prior to Clang 6.0.1 and FreeBSD 12-R, but failed on FreeBSD 12-R with Clang 6.0.1. Below steps can easily reproduce the problem. Directly use ld to link a sha= red object works no issue for a shared object [step 3,4], but cc (Clang 6.0.1) "-Wl,-r" command failed to do so [step 5]. [1] FBSD120: cat << CLANG60_TEST_CASE > test-clang6.c #include <stdio.h> int anyFunc(int a, int b) { printf("a =3D %d b =3D %d\n", a, b); return a * b; } CLANG60_TEST_CASE [2] FBSD120: cc -c -o test.o -fPIC test-clang6.c [3] FBSD120: ld -r -o test.so test.o [4] FBSD120: ld -r -o test.so test.o -v LLD 6.0.1 (FreeBSD 335540-1200005) (compatible with GNU linkers) [5] FBSD120: cc -Wl,-r -o test.so test.o -v FreeBSD clang version 6.0.1 (tags/RELEASE_601/final 335540) (based on LLVM 6.0.1 ) Target: x86_64-unknown-freebsd12.0 Thread model: posix InstalledDir: /usr/bin "/usr/bin/ld" --eh-frame-hdr -dynamic-linker /libexec/ld-elf.so.1 --hash-style=3D both --enable-new-dtags -o test.so /usr/lib/crt1.o /usr/lib/crti.o /usr/lib/crtb egin.o -L/usr/lib -r test.o -lgcc --as-needed -lgcc_s --no-as-needed -lc -l= gcc - -as-needed -lgcc_s --no-as-needed /usr/lib/crtend.o /usr/lib/crtn.o /usr/bin/ld: error: attempted static link of dynamic object /usr/lib/libgcc_s.so /usr/bin/ld: error: attempted static link of dynamic object /usr/lib/libgcc_s.so cc: error: linker command failed with exit code 1 (use -v to see invocation) --=20 You are receiving this mail because: You are the assignee for the bug.=
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