> This is a complete Catch-22. The question is what to do about it.
> I have some ideas, but I'd like to hear what other people think.
I'll outline what PHP is doing quite successfully in this
area. The described method allows you to build native
objects as well as libtool objects which is what you probably
need here as well (the former is usually required for
autoconf-checks).
First, in PHP we check what kind of flag the native compiler
requires to add a runtime library search path.
Second, we have a macro PHP_ADD_LIBPATH which does:
- set up LDFLAGS to contain the proper native compiler
settings (e.g. -Wl,-rpath,...), so that test programs can
execute properly
- store the plain path in PHP_RPATHS
Third, before generating the Makefiles, PHP_RPATHS is
expanded into LIBTOOL_RPATHS and NATIVE_RPATHS(*), each
containing the proper flags. This step enables Makefile
authors to differentiate.
Fourth, all runpath elements are 'erased'(*) from LDFLAGS.
* deliberately changed for improved clearness
- Sascha Experience IRCG
http://schumann.cx/ http://schumann.cx/ircg
