[Poppler-bugs] [Bug 9094] New: needs to link with -lpthread due to mutex usage in libgoo

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https://bugs.freedesktop.org/show_bug.cgi?id=9094          
     
           Summary: needs to link with -lpthread due to mutex usage in
                    libgoo
           Product: poppler
           Version: unspecified
          Platform: PC
        OS/Version: other
            Status: NEW
          Severity: normal
          Priority: P2
         Component: general
        AssignedTo: poppler-bugs at lists.freedesktop.org
        ReportedBy: mbanck at debian.org


goo/GooMutex.h includes <pthread.h> and defines pthread_mutex_* aliases which
are used in poppler.  Those become undefined references on platforms which do
not include libpthread in libc:

g++ -Wall -Wno-unused -g -Wall -O2 -o .libs/pdffonts pdffonts.o parseargs.o 
../poppler/.libs/libpoppler.so -lfontconfig /usr/lib/libjpeg.so
/usr/lib/libfreetype.so -lz
../poppler/.libs/libpoppler.so: undefined reference to `pthread_mutex_unlock'
collect2: ld returned 1 exit status
make[3]: *** [pdffonts] Error 1

This is the case e.g. on GNU/Hurd, which has its own libpthread library outside
of glibc currently.  Adding -lpthread to libpoppler_la_LDFLAGS in
poppler/Makefile.am makes poppler build fine on these platforms.  I am not sure
whether this might have negative side-effects (all programs using libpoppler
getting -lpthread as well, maybe?), so there might be a better fix.          
     
     
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