On Sat, Feb 07, 2009 at 12:55:50PM -0700, Eric Blake wrote: > According to Sylvain Beucler on 2/7/2009 11:04 AM: > > AC_LIB_HAVE_LINKFLAGS( > > [jbig2dec], dnl lib name > > [], > > Careful with your m4 quoting here - by adding a dnl after the comma, the > leading whitespace on the next line is no longer stripped. In turn, if > AC_LIB_HAVE_LINKFLAGS uses "m4_default([$2], [some default])", since $2 is > non-empty (although it is all whitespace), you no longer get the [some > default] action. Perhaps that could be related to the issue you are hitting?
I tried: # AC_LIB_HAVE_LINKFLAGS(lib name, dependencies, includes, optional test code) AC_LIB_HAVE_LINKFLAGS([jbig2dec],[],[],[extern void* jbig2_ctx_new(); void* t = jbig2_ctx_new;]) => same I also tried adding a dummy '#include' just in case: AC_LIB_HAVE_LINKFLAGS([jbig2dec],[],[#include <stdlib.h>],[extern void* jbig2_ctx_new(); void* t = jbig2_ctx_new;]) => same too :/ Just in case: to try a new M4 wording I: - edit configure.ac - run 'autoreconf' or 'autoconf' - run ./configure --help | grep -i with -- Sylvain
