On my system, expat is located at
/usr/include/expat.h /usr/include/expat_external.h /usr/lib/libexpat.1.5.0.dylib /usr/lib/libexpat.1.dylib /usr/lib/libexpat.dylib /usr/lib/libexpat.la
So I export the required variables for boost to build graphml
export EXPAT_INCLUDE=/usr/include export EXPAT_LIBPATH=/usr/lib
then I run (where $DIR and $BOOST generate the paths I want the includes and libs to go)
./configure --includedir=$DIR/$BOOST --libdir=$DIR/$BOOST/lib \ --with-libraries=test,graph
I get this error:
ld: library not found for -lexpat collect2: ld returned 1 exit status
which boost says is caused by the line:
g++ -dynamiclib -install_name 'libboost_graph-mt-1_35.dylib' -L'/usr/lib' -o 'bin.v2/libs/graph/build/darwin/release/macosx-version-10.4/threading-multi/libboost_graph-mt-1_35.dylib' 'bin.v2/libs/graph/build/darwin/release/macosx-version-10.4/threading-multi/read_graphviz_spirit.o' 'bin.v2/libs/graph/build/darwin/release/macosx-version-10.4/threading-multi/graphml.o' -lexpat -isysroot /Developer/SDKs/MacOSX10.4u.sdk -mmacosx-version-min=10.4 -Wl,-dead_strip -no_dead_strip_inits_and_terms
I don’t get how it’s not finding the expat library with -L'/usr/lib' and -lexpat as arguments? My understanding is that /usr/lib/libexpat.dylib is exactly referenced as -L'/usr/lib' and -lexpat.
The Jamfile for building graphml is here. If EXPAT_INCLUDE and EXPAT_LIBPATH aren’t set then it warns you (lines 39-41 of jamfile)
warning: Graph library does not contain optional GraphML reader.
note: to enable GraphML support, set EXPAT_INCLUDE and
note: directories containing the Expat headers and libraries, respectively.
Another update: I don’t see an .so or a .a file in your list of where EXPAT is… doesn’t that seem a bit strange? Normally it will create an alias for the library name
for example /usr/lib/libblah.so -> /usr/lib/libblaah.so.1.2
Is dynalib some Macintoshism (I don’t use Macs much)
is .la the static version extension on this platform?
Update:
The quotes around the path seem troublesome… -L’/usr/lib’
Try changing this to -L/usr/lib and -L /usr/lib
Older stuff:
The directive for the linker to include paths during the link step is -L. You need to look for some linker flags to update to include -L path_to_expat. I don’t think the linker pays any attention to LD_LIBRARY_PATH. I am not sure what documentation you have read to set EXPAT_INCLUDE or EXPAT_LIBPATH.