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Subject: [Bug libquadmath/55225] New: Fail to build lgammaq.c from trunk with mingw-w64
Date: Wed, 07 Nov 2012 07:36:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55225

             Bug #: 55225
           Summary: Fail to build lgammaq.c from trunk with mingw-w64
    Classification: Unclassified
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: libquadmath
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: alexpux@gmail.com


Mingw-w64 doesn't have declared signgam in <math.h> that leads to an error:

depbase=`echo math/lgammaq.lo | sed 's|[^/]*$|.deps/&|;s|\.lo$||'`;\
    /bin/sh ./libtool --tag=CC   --mode=compile
/temp/x64-trunk-snapshot-posix-seh-rev0/build/gcc-trunk/./gcc/xgcc
-B/temp/x64-trunk-snapshot-posix-seh-rev0/build/gcc-trunk/./gcc/
-L/temp/x64-trunk-snapshot-posix-seh-rev0/prefix/x86_64-w64-mingw32/lib
-L/temp/x64-trunk-snapshot-posix-seh-rev0/prefix/mingw/lib -isystem
/temp/x64-trunk-snapshot-posix-seh-rev0/prefix/x86_64-w64-mingw32/include
-isystem /temp/x64-trunk-snapshot-posix-seh-rev0/prefix/mingw/include
-B/temp/x64-trunk-snapshot-posix-seh-rev0/prefix/x86_64-w64-mingw32/bin/
-B/temp/x64-trunk-snapshot-posix-seh-rev0/prefix/x86_64-w64-mingw32/lib/
-isystem
/temp/x64-trunk-snapshot-posix-seh-rev0/prefix/x86_64-w64-mingw32/include
-isystem
/temp/x64-trunk-snapshot-posix-seh-rev0/prefix/x86_64-w64-mingw32/sys-include  
 -DHAVE_CONFIG_H -I. -I../../../../../mingw-sources/gcc-trunk/libquadmath    
-g -O2 -pipe -fomit-frame-pointer
-I/temp/x64-trunk-snapshot-posix-seh-rev0/libs/include
-I/temp/mingw-prereq/x86_64-w64-mingw32-static/include -MT math/lgammaq.lo -MD
-MP -MF $depbase.Tpo -c -o math/lgammaq.lo
../../../../../mingw-sources/gcc-trunk/libquadmath/math/lgammaq.c &&\
    mv -f $depbase.Tpo $depbase.Plo
libtool: compile: 
/temp/x64-trunk-snapshot-posix-seh-rev0/build/gcc-trunk/./gcc/xgcc
-B/temp/x64-trunk-snapshot-posix-seh-rev0/build/gcc-trunk/./gcc/
-L/temp/x64-trunk-snapshot-posix-seh-rev0/prefix/x86_64-w64-mingw32/lib
-L/temp/x64-trunk-snapshot-posix-seh-rev0/prefix/mingw/lib -isystem
/temp/x64-trunk-snapshot-posix-seh-rev0/prefix/x86_64-w64-mingw32/include
-isystem /temp/x64-trunk-snapshot-posix-seh-rev0/prefix/mingw/include
-B/temp/x64-trunk-snapshot-posix-seh-rev0/prefix/x86_64-w64-mingw32/bin/
-B/temp/x64-trunk-snapshot-posix-seh-rev0/prefix/x86_64-w64-mingw32/lib/
-isystem
/temp/x64-trunk-snapshot-posix-seh-rev0/prefix/x86_64-w64-mingw32/include
-isystem
/temp/x64-trunk-snapshot-posix-seh-rev0/prefix/x86_64-w64-mingw32/sys-include
-DHAVE_CONFIG_H -I. -I../../../../../mingw-sources/gcc-trunk/libquadmath -g -O2
-pipe -fomit-frame-pointer
-I/temp/x64-trunk-snapshot-posix-seh-rev0/libs/include
-I/temp/mingw-prereq/x86_64-w64-mingw32-static/include -MT math/lgammaq.lo -MD
-MP -MF math/.deps/lgammaq.Tpo -c
../../../../../mingw-sources/gcc-trunk/libquadmath/math/lgammaq.c  -DDLL_EXPORT
-DPIC -o math/.libs/lgammaq.o
../../../../../mingw-sources/gcc-trunk/libquadmath/math/lgammaq.c: In function
'lgammaq':
../../../../../mingw-sources/gcc-trunk/libquadmath/math/lgammaq.c:763:3: error:
'signgam' undeclared (first use in this function)
   signgam = 1;
   ^
../../../../../mingw-sources/gcc-trunk/libquadmath/math/lgammaq.c:763:3: note:
each undeclared identifier is reported only once for each function it appears
in
make[3]: *** [math/lgammaq.lo] Error 1
make[3]: Leaving directory
`/temp/x64-trunk-snapshot-posix-seh-rev0/build/gcc-trunk/x86_64-w64-mingw32/libquadmath'