Compiling GCC-5.0 OS X Lion dyld: Symbol not found: __ZNKSt11logic_error4whatEv

Question

I'm trying to install gcc-5.0 from source on my OS X 10.7.5 using the (Apple built) /usr/bin/gcc-4.2 and the appropriate versions of gcc dependencies (gmp,mpfr,mpc) which are installed at /usr/local.

The reason I'm trying to (re)install gcc-5.0 is because I want to install it into a separate folder like /usr/local/gcc-5.0 so that I can choose to use or not us it easily by setting it into the PATH environment variable. The /configure script is (initiated from an empty gcc-5.0-build folder)

../gcc-5.0.0/configure --prefix=/usr/local/gcc-5.0.0 --with-gmp=/usr/local/lib --with-mpfr=/usr/local/lib --with-mpc=/usr/local/lib --enable-languages=c,c++

After make and about 1GB of compiled files I get this error (truncated)

dyld: Symbol not found: __ZNKSt11logic_error4whatEv
  Referenced from: <my-build-dir>/x86_64-apple-darwin11.4.0/libstdc++-v3/src/.libs/libstdc++.6.dylib
  Expected in: flat namespace

After browsing many webpages and posts in Stackoverflow, I've tried various things like:

adding LDFLAGS="-flat_namespace"before ./configure

compiling with Apple built gcc-4.2 instead of gcc-5.0

but no luck I still end up with this error.

When I check the libstdc++.6.dylib on the presence of __ZNKSt11logic_error4whatEv

nm -g x86_64-apple-darwin11.4.0/libstdc++-v3/src/.libs/libstdc++.6.dylib | grep  __ZNKSt11logic_error4whatEv

It returns:

U __ZNKSt11logic_error4whatEv

so itcontains the symbol in question It doesn't contain the symbol in question (The U means Undefined)

otool -hv x86_64-apple-darwin11.4.0/libstdc++-v3/src/.libs/libstdc++.6.dylib

returns

Mach header
      magic cputype cpusubtype  caps    filetype ncmds sizeofcmds      flags
MH_MAGIC_64  X86_64        ALL  0x00       DYLIB    13       2560   NOUNDEFS DYLDLINK TWOLEVEL WEAK_DEFINES BINDS_TO_WEAK NO_REEXPORTED_DYLIBS

The DYLDLINK TWOLEVEL means that it's two-level namespace lib.

Questions :

1- In the message Expected in: flat namespace does it mean that the compiler wants absolutely only the flat namespace library? I mean is it absolutely not possible to use this two-level namespace lib? After a comment by @G.M. the symbol is not defined in the library in question and that makes the absence or presence of flat namespace irrelevant because it is the content of the library which causes the problem, not its type.

2- What should I do compile the gcc-5.0 ?

Update 23.March.2021

Upon the answer suggesting hiding the symbols, I've added

export CFLAGS="-fvisibility=hidden"

onto the ~/.bash_profile deleted the build folder all over, configured again using

../gcc-5.0.0-20150224/configure --prefix=/usr/local/gcc-5.0.0 --enable-languages=c,c++

and after make has created 532MB of compiled files, it stopped by the strip: symbols names listed in:libgcc-darwin.10.4.ver not in libgcc_s.dylib type of error. Here is how it stopped:

/Users/thompson/Downloads/gcc-5.0.0-20150224-mybuild/./gcc/xgcc -B/Users/thompson/Downloads/gcc-5.0.0-20150224-mybuild/./gcc/ -B/usr/local/gcc-5.0.0/x86_64-apple-darwin11.4.2/bin/ -B/usr/local/gcc-5.0.0/x86_64-apple-darwin11.4.2/lib/ -isystem /usr/local/gcc-5.0.0/x86_64-apple-darwin11.4.2/include -isystem /usr/local/gcc-5.0.0/x86_64-apple-darwin11.4.2/sys-include    -O2  -g -O2 -fvisibility=hidden -DIN_GCC    -W -Wall -Wwrite-strings -Wcast-qual -Wno-format -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition  -isystem ./include   -pipe -fno-common -g -DIN_LIBGCC2 -fbuilding-libgcc -fno-stack-protector  -dynamiclib -nodefaultlibs -install_name /usr/local/gcc-5.0.0/lib/libgcc_s.1.dylib -single_module -o ./libgcc_s.dylib -Wl,-exported_symbols_list,libgcc.map -compatibility_version 1 -current_version 1.0 -g -O2 -fvisibility=hidden -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 _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 _fixsfti_s.o _fixdfti_s.o _fixxfti_s.o _fixtfti_s.o _fixunssfti_s.o _fixunsdfti_s.o _fixunsxfti_s.o _fixunstfti_s.o _floattisf_s.o _floattidf_s.o _floattixf_s.o _floattitf_s.o _floatuntisf_s.o _floatuntidf_s.o _floatuntixf_s.o _floatuntitf_s.o _divdi3_s.o _moddi3_s.o _udivdi3_s.o _umoddi3_s.o _udiv_w_sdiv_s.o _udivmoddi4_s.o darwin-64_s.o cpuinfo_s.o sfp-exceptions_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 extendsftf2_s.o extenddftf2_s.o extendxftf2_s.o trunctfsf2_s.o trunctfdf2_s.o trunctfxf2_s.o enable-execute-stack_s.o unwind-dw2_s.o unwind-dw2-fde-darwin_s.o unwind-sjlj_s.o unwind-c_s.o emutls_s.o libgcc.a -lc

ld: warning: cannot export hidden symbol ___ashldi3 from darwin-64_s.o
ld: warning: cannot export hidden symbol ___ashrdi3 from darwin-64_s.o
ld: warning: cannot export hidden symbol ___clzsi2 from darwin-64_s.o
ld: warning: cannot export hidden symbol ___cmpdi2 from darwin-64_s.o
<truncated>
ld: warning: cannot export hidden symbol ___fixunstfsi from fixunstfsi_s.o
ld: warning: cannot export hidden symbol ___floatsitf from floatsitf_s.o
<truncated>
ld: warning: cannot export hidden symbol ___enable_execute_stack from enable-execute-stack_s.o
<truncated>
ld: warning: cannot export hidden symbol ___emutls_register_common from emutls_s.o

MLIBS=`/Users/thompson/Downloads/gcc-5.0.0-20150224-mybuild/./gcc/xgcc -B/Users/thompson/Downloads/gcc-5.0.0-20150224-mybuild/./gcc/ -B/usr/local/gcc-5.0.0/x86_64-apple-darwin11.4.2/bin/ -B/usr/local/gcc-5.0.0/x86_64-apple-darwin11.4.2/lib/ -isystem /usr/local/gcc-5.0.0/x86_64-apple-darwin11.4.2/include -isystem /usr/local/gcc-5.0.0/x86_64-apple-darwin11.4.2/sys-include    --print-multi-lib | sed -e 's/;.*$//'` ; \
    for mlib in $MLIBS ; do \
      cp ../${mlib}/libgcc/${mlib}/libgcc_s.dylib  \
        ./libgcc_s.1.dylib_T_${mlib} || exit 1 ; \
    done

lipo -output libgcc_s.1.dylib \
      -create libgcc_s.1.dylib_T*
rm libgcc_s.1.dylib_T*

<truncated>

strip: symbols names listed in: <source-folder>/libgcc/config/i386/libgcc-darwin.10.4.ver not in: </Users/thompson/Downloads/gcc-5.0.0-20150224-mybuild>/x86_64-apple-darwin11.4.2/libgcc/libgcc_s.dylib
___ashldi3
___ashrdi3
___clzsi2
___cmpdi2
___ctzsi2
___divdi3
___enable_execute_stack
___gcc_personality_v0
___lshrdi3
___moddi3
___muldi3
___negdi2
___paritysi2
___popcountsi2
___ucmpdi2
___udivdi3
___udivmoddi4
___umoddi3
make[3]: *** [libgcc_ext.10.4.dylib] Error 1
make[2]: *** [all-stage1-target-libgcc] Error 2

Answer 1

I suffered the same error while running my application in release mode. After two days searching I manage to resolve it by turning the Symbols Hidden by Default off in the dynamic library project build settings. Hope this is helpful to you and others with the same error.