[Bug target/112745] New: stage 1 libgcc_s.so fails to link on FreeBSD

[Bug target/112745] New: stage 1 libgcc_s.so fails to link on FreeBSD

[ro at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112745

            Bug ID: 112745
           Summary: stage 1 libgcc_s.so fails to link on FreeBSD
           Product: gcc
           Version: 14.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: ro at gcc dot gnu.org
  Target Milestone: ---
              Host: x86_64-unknown-freebsd13.1
            Target: x86_64-unknown-freebsd13.1
             Build: x86_64-unknown-freebsd13.1

When trying to build trunk on FreeBSD 13.1, configured with just

configure --enable-languages=c++

libgcc_s.so in stage 1 fails to link like

/var/gcc/regression/master/13.1-gcc/build/./gcc/xgcc
-B/var/gcc/regression/master/13.1-gcc/build/./gcc/
-B/usr/local/x86_64-unknown-freebsd13.1/bin/
-B/usr/local/x86_64-unknown-freebsd13.1/lib/ -isystem
/usr/local/x86_64-unknown-freebsd13.1/include -isystem
/usr/local/x86_64-unknown-freebsd13.1/sys-include   -fno-checking -O2  -g -O2
-DIN_GCC   -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wno-format
-Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition  -isystem
./include  -fpic -pthread -g -DIN_LIBGCC2 -fbuilding-libgcc
-fno-stack-protector  -shared -nodefaultlibs -Wl,--soname=libgcc_s.so.1
-Wl,--version-script=libgcc.map  -o ./libgcc_s.so.1.tmp -g -O2 -B./ _muldi3_s.o
_negdi2_s.o _lshrdi3_s.o _ashldi3_s.o _ashrdi3_s.o _cmpdi2_s.o _ucmpdi2_s.o
_clear_cache_s.o _trampoline_s.o __main_s.o _absvsi2_s.o _absvdi2_s.o
_addvsi3_s.o _addvdi3_s.o _subvsi3_s.o _subvdi3_s.o _mulvsi3_s.o _mulvdi3_s.o
_negvsi2_s.o _negvdi2_s.o _ctors_s.o _ffssi2_s.o _ffsdi2_s.o _clz_s.o
_clzsi2_s.o _clzdi2_s.o _ctzsi2_s.o _ctzdi2_s.o _popcount_tab_s.o
_popcountsi2_s.o _popcountdi2_s.o _paritysi2_s.o _paritydi2_s.o _powisf2_s.o
_powidf2_s.o _powixf2_s.o _powitf2_s.o _mulsc3_s.o _muldc3_s.o _mulxc3_s.o
_multc3_s.o _divsc3_s.o _divdc3_s.o _divxc3_s.o _divtc3_s.o _bswapsi2_s.o
_bswapdi2_s.o _clrsbsi2_s.o _clrsbdi2_s.o _mulbitint3_s.o _fixunssfsi_s.o
_fixunsdfsi_s.o _fixunsxfsi_s.o _fixsfdi_s.o _fixdfdi_s.o _fixxfdi_s.o
_fixunssfdi_s.o _fixunsdfdi_s.o _fixunsxfdi_s.o _floatdisf_s.o _floatdidf_s.o
_floatdixf_s.o _floatundisf_s.o _floatundidf_s.o _floatundixf_s.o _divdi3_s.o
_moddi3_s.o _divmoddi4_s.o _udivdi3_s.o _umoddi3_s.o _udivmoddi4_s.o
_udiv_w_sdiv_s.o _divmodbitint4_s.o cpuinfo_s.o sfp-exceptions_s.o _divhc3_s.o
_mulhc3_s.o addtf3_s.o divtf3_s.o eqtf2_s.o getf2_s.o letf2_s.o multf3_s.o
negtf2_s.o subtf3_s.o unordtf2_s.o fixtfsi_s.o fixunstfsi_s.o floatsitf_s.o
floatunsitf_s.o fixtfdi_s.o fixunstfdi_s.o floatditf_s.o floatunditf_s.o
fixtfti_s.o fixunstfti_s.o floattitf_s.o floatuntitf_s.o fixsfbitint_s.o
floatbitintsf_s.o fixdfbitint_s.o floatbitintdf_s.o extendhfsf2_s.o
extendhfdf2_s.o extendhftf2_s.o extendhfxf2_s.o extendsfdf2_s.o extendsftf2_s.o
extenddftf2_s.o extendxftf2_s.o extendbfsf2_s.o trunctfhf2_s.o truncxfhf2_s.o
truncdfhf2_s.o truncsfhf2_s.o trunctfsf2_s.o truncdfsf2_s.o trunctfdf2_s.o
trunctfxf2_s.o trunctfbf2_s.o truncxfbf2_s.o truncdfbf2_s.o truncsfbf2_s.o
trunchfbf2_s.o fixtfbitint_s.o floatbitinttf_s.o fixhfti_s.o fixunshfti_s.o
floattihf_s.o floatuntihf_s.o floattibf_s.o floatuntibf_s.o eqhf2_s.o
fixxfbitint_s.o floatbitinthf_s.o floatbitintbf_s.o floatbitintxf_s.o
enable-execute-stack_s.o hardcfr_s.o unwind-dw2_s.o unwind-dw2-fde-dip_s.o
unwind-sjlj_s.o unwind-c_s.o emutls_s.o libgcc.a -lc && rm -f ./libgcc_s.so &&
if [ -f ./libgcc_s.so.1 ]; then mv -f ./libgcc_s.so.1 ./libgcc_s.so.1.backup;
else true; fi && mv ./libgcc_s.so.1.tmp ./libgcc_s.so.1 && ln -s libgcc_s.so.1
./libgcc_s.so
ld: error: unable to find library -lc
collect2: error: ld returned 1 exit status
gmake[3]: *** [Makefile:1002: libgcc_s.so] Error 1
gmake[3]: Leaving directory
'/var/gcc/regression/master/13.1-gcc/build/x86_64-unknown-freebsd13.1/libgcc'

The linker used is

$ /usr/bin/ld -v
LLD 13.0.0 (FreeBSD llvmorg-13.0.0-0-gd7b669b3a303-1400002) (compatible with
GNU linkers)

It seems lld is not as compatible with GNU ld as it claims: when configuring
gcc with

configure --enable-languages=c++ --with-ld=/usr/local/bin/ld --with-gnu-ld

the link works fine.

At the very least, this quirk should be documented in install.texi.  Better
yet, lld should be fixed to be true to its claim and have a compatible library
search patch with gld.  As a last fallback, gcc should handle this itself,
passing the standard search patch itself.

[Bug target/112745] stage 1 libgcc_s.so fails to link on FreeBSD

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112745

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |DUPLICATE

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Dup.

*** This bug has been marked as a duplicate of bug 97304 ***