Re: [Openexr-devel] OpenEXR 1.3.2 released

[Kai-Uwe Behrmann]

Drew,

here the test:

# pkg-config --cflags OpenEXR
-pthread -I/opt/kai-uwe/include/openexr  

# cat /opt/kai-uwe/lib/pkgconfig/OpenEXR.pc
prefix=/opt/kai-uwe
exec_prefix=${prefix}
libdir=${exec_prefix}/lib
includedir=${prefix}/include
OpenEXR_includedir=${prefix}/include/openexr

Name: OpenEXR
Description: OpenEXR image library
Version: 1.3.2
Libs: -L${libdir} -lIlmImf -lImath -lHalf -lIex -lz 
Cflags: -pthread -I${OpenEXR_includedir}


kind regards
Kai-Uwe Behrmann
                                + development for color management 
                                + imaging / panoramas
                                + email: address@hidden
                                + http://www.behrmann.name


Am 17.07.06, 12:18 -0700 schrieb Drew Hess:

> Kai-Uwe Behrmann <address@hidden> writes:
> 
> > Trying to build CinePaint fails with missed symbols, expectedly from 
> > pthread.
> >
> > g++ -g -O2 -o .libs/openexr chroma_icc.o openexr.o -rdynamic  
> > ../../lib/.libs/libcinepaint.so -L/opt/kai-uwe/lib -L/usr/X11R6/lib 
> > /opt/kai-uwe/lib/libgtk.so /opt/kai-uwe/lib/libgdk.so -lgmodule -ldl -lXi 
> > -lXext -lX11 -lm /opt/kai-uwe/lib/libIlmImf.so 
> > /opt/kai-uwe/lib/libIlmThread.so /opt/kai-uwe/lib/libImath.so 
> > /opt/kai-uwe/lib/libIex.so /opt/kai-uwe/lib/libHalf.so 
> > /usr/lib/libstdc++.so -lz -llcms -lc -lglib -Wl,--rpath 
> > -Wl,/opt/kai-uwe/lib
> > /opt/kai-uwe/lib/libIlmThread.so: undefined reference to `sem_destroy'
> > /opt/kai-uwe/lib/libIlmThread.so: undefined reference to `sem_wait'
> > /opt/kai-uwe/lib/libIlmThread.so: undefined reference to `sem_post'
> > /opt/kai-uwe/lib/libIlmThread.so: undefined reference to `sem_init'
> > /opt/kai-uwe/lib/libIlmThread.so: undefined reference to `sem_getvalue'
> > /opt/kai-uwe/lib/libIlmThread.so: undefined reference to `pthread_join'
> > collect2: ld returned 1 exit status
> > make[2]: *** [openexr] Fehler 1
> >
> > Substituting pthread with -lpthread in Makefile and doing a make 
> > install solves the issue. For many users this will be a reason to start 
> > complaining.
> >
> > Do I need to specify -lpthread on user (my) side or is it to be considered 
> > as bug in OpenEXR's build system?
> 
> 
> Hi Kai-Uwe,
> 
> If you're using pkg-config in your build system to determine the
> appropriate OpenEXR libs, it should include -lpthread in the output.
> If it doesn't, that's a bug.
> 
> If you're doing your own manual setup, then you should add -lpthread,
> but only if OpenEXR was compiled with thread support.  You'll need to
> detect that somehow.  The safest bet is to use pkg-config.
> 
> thanks
> d
> 
>