hi there, I have a little fortran test function that I'm trying to apply autotools to as a means of figuring out how to construct a configure.ac file that will be able to find the hdf5 library (used by the test program.) In my configure.ac file I have "AC_SEARCH_LIBS(h5open_f,hdf5_fortran,[],[],-lhdf5_hl -lhdf5 -lz). I simply want the configure script to be able to successfully search for the function and carry out its default action of appending a flag to LIBS. But I'm identifying some problems.... I have studied the config.log file to see what test program configure tries to compile and how it tries to compile it, and here are the problems as I see them: first, although the compiler command correctly includes the required -l flags along with their library names and in the right order, there is no -L flag instructing the compiler where to look for the libraries. As I understand it the -L flags should be contained in the LDFLAGS variable, but this is blank in the Makefiles. According to the manual LDFLAGS is a preset output variable and a search for "LDFLAGS" through the entire manual fails to turn up any explanation of how to append a library directory to LDFLAGS. Assigning it directly in configure.ac makes autoconf complain. Secondly the test program that configure attempts to compile is bound to fail even if all the "-L's" and "-l's" are exactly correct in the compile/link commands. This is because a number of necessary lines are missing from it. configure tries to compile: program test call h5open_f end program test but at minimum it must contain: program test use hdf5 integer :: i call h5open_f(i) end program test Can this be arranged? If there was a subroutine in the library that didn't require an argument I'd have used it instead, but there isn't and even so there is still the need for the "use hdf5" statement. Is there any help out there for me? I'll attach the relevant files here. http://www.nabble.com/file/p16064029/test.tar.gz test.tar.gz Thanks very much in advance. Tim -- View this message in context: http://www.nabble.com/AC_SEARCH_LIBS-and-fortran-tp16064029p16064029.html Sent from the Gnu - Autoconf - General mailing list archive at Nabble.com. _______________________________________________ Autoconf mailing list Autoconf@xxxxxxx http://lists.gnu.org/mailman/listinfo/autoconf
