On Tue, 19 Nov 2013, Gaius Mulley wrote: > Below are two patches for configure.ac and Makefile.def which provide > rules for building libm2 and checking gm2. Tested on trunk and no new > regressions have occurred when building with --enable-languages=all > on x86_64 Debian Wheezy.
We don't use --enable-<library> options like that. Instead: (a) The front end's config-lang.in file sets target_libs, thereby causing the library to be disabled if the language is. Of course this means you don't actually add the library before the front end - but these build rules are harmless in the absence of the library directory. (In some cases, additional toplevel logic is needed - see how libitm etc. are disabled when C++ isn't built - but that shouldn't be relevant here.) (b) Toplevel configure automatically supports --disable-<subdirectory> options to disable building a directory that would otherwise be built by default; they don't need adding explicitly. > I presume the person committing the patches also regenerates configure > and Makefile.in ? Yes - and applies the patches to all three relevant repositories (GCC, binutils-gdb, src) or asks for help if they don't have access to them all. Unfortunately it seems some recent patches haven't gone in src (which is still used for newlib). -- Joseph S. Myers jos...@codesourcery.com
