Sylvain Beucler <b...@beuc.net> writes: > Hi, > > I'm trying to implement simply a '--with-mylib=/path/to/mylib' option > in 'configure', and I'm wondering if the 'havelib' would help.
Hi. I believe it does. > However I don't really understand how it's meant to be > used. Apparently its m4 macros need to be used within a macro > definition? > > Can you explain me basically what it does and how to use it? > (is it even meant for external use?) I'm using it in some projects which aren't using gnulib otherwise, such as for example libssh2: http://www.libssh2.org/wiki/index.php/Main_Page http://libssh2.cvs.sourceforge.net/viewvc/libssh2/libssh2/ Typically you add the lib-ld.m4, lib-link.m4, and lib-prefix.m4 macros to your project's m4/ directory, and add something like this to configure.ac: AC_LIB_HAVE_LINKFLAGS([ssl], [crypto], [#include <openssl/ssl.h>]) ... AC_LIB_HAVE_LINKFLAGS([gcrypt], [], [#include <gcrypt.h>]) ... AC_LIB_HAVE_LINKFLAGS([z], [], [#include <zlib.h>]) Then add to *_LDFLAGS the automake variables, e.g.: libssh2_la_LDFLAGS = $(VERSION) -no-undefined \ $(LTLIBGCRYPT) $(LTLIBSSL) $(LTLIBZ) See complete usage in: http://libssh2.cvs.sourceforge.net/viewvc/libssh2/libssh2/configure.in?revision=1.63&view=markup http://libssh2.cvs.sourceforge.net/viewvc/libssh2/libssh2/src/Makefile.am?revision=1.13&view=markup Of course, you may use gnulib-tool to import the files too, to avoid manual work. But the files are relatively stable and have been tested on many platforms already. Read the *.m4 files, they contain documentation for the various macros you may use. /Simon
