Greetings: I am quite new to using autoconf, so please bear with me,
I have a C++ program that requires the log4cpp library to perform logging functions. So, I want my program to check for this library when the user does a ./configure. Here is the code I have put together to add to configure.ac to accomplish this: AC_LANG(C++) AC_PATH_PROG(LOG4CPP_CONFIG, log4cpp-config, no) if test x$LOG4CPP_CONFIG = xno ; then echo "*** log4cpp-config not found. See http://log4cpp.sourceforge.net"; echo "*** All of log4cpp dependent parts will be disabled" else AC_MSG_CHECKING(log4cpp version) LOG4CPP_VERSION=[`log4cpp-config --version | sed 's/^[^0-9]*//'`] AC_MSG_RESULT($LOG4CPP_VERSION) AC_DEFINE(HAVE_LIBLOG4CPP,1,[Define to 1 if log4cpp library was found]) LOG4CPP_CFLAGS=[`log4cpp-config --cflags`] LOG4CPP_LIBS=[`log4cpp-config --libs`] fi Feel free to critique my technique, I put this together by trying to read through the monumental documentation and looking at how other programs approach similar problems. I suspect it is a mess, but it does seem to work! My problem is that although it will tell me if it finds the library, and I can pass HAVE_LIBLOG4CPP into my program by including config.h, I don't know how to get the include path and library names into the g++ command line (i.e. -I/usr/local/include/log4cpp and -L/usr/local/lib -llog4cpp -lnsl). These are of course the values in LOG4CPP_CFLAGS and LOG4CPP_LIBS. Could some kind soul offer me some guidance? Thanks very much. Regards, Scott
