Date: Fri, 19 Jun 2020 20:49:38 -0700 From: "Jin Guojun[VFF]" <jguojun@gmail.com> To: freebsd-questions@freebsd.org Subject: Why clang/cc needs libgcc_s in 11.4-R Message-ID: <dd120fa2-d263-da99-f16a-82c15626b038@gmail.com>
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Just installed 11.4-R and try to build a shared library by passing relocation flag from cc -Wl,-r to ld, but ld complains -lgcc_s not found: FBSD11: cc -Wl,-r -o libpixrect.so `lorder rast_mem.so rast_dump.so | tsort` /usr/bin/ld: cannot find -lgcc_s cc: error: linker command failed with exit code 1 (use -v to see invocation) FBSD11: cc -Wl,-r,-v -v -o libpixrect.so `lorder rast_mem.so rast_dump.so | tsort` FreeBSD clang version 10.0.0 (git@github.com:llvm/llvm-project.git llvmorg-10.0.0-0-gd32170dbd5b) Target: x86_64-unknown-freebsd11.4 Thread model: posix InstalledDir: /usr/bin "/usr/bin/ld" --eh-frame-hdr -dynamic-linker /libexec/ld-elf.so.1 --hash-style=both --enable-new-dtags -o libpixrect.so /usr/lib/crt1.o /usr/lib/crti.o /usr/lib/crtbegin.o -L/usr/lib -r -v rast_dump.so rast_mem.so -lgcc --as-needed -lgcc_s --no-as-needed -lc -lgcc --as-needed -lgcc_s --no-as-needed /usr/lib/crtend.o /usr/lib/crtn.o GNU ld 2.17.50 [FreeBSD] 2007-07-03 /usr/bin/ld: cannot find -lgcc_s Why clang depends on gcc library? Is any flag or ENV variable can overwrite this requirement? If not, where can I get the libgcc_s? Thanks in advance, -Jin
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