> Wich directory variable should I set to tell AC_CHECK_HEADER to search in ??
>
> For instance I have installed a package in /usr/local/mylib/include and
> /usr/local/mylib/lib and I would like configure to detect if mylib is not
> installed.
> I prefer not to put it in an environnement variable.
As an alternative to CPPFLAGS and LDFLAGS/LIBS via cmd line/environment,
you could implement the corresponding configure option --with-mylib=DIR.
Then check explicitly for DIR/include/mylib.h and DIR/lib/libmylib.a. Or
add -IDIR/include, if it exists, to CPPFLAGS and then use AC_CHECK_HEADER.
Similar for the lib.
