On 27 Jul 2011, at 19:22, narke wrote: > Hi, Gary Howdy! > On 27 July 2011 14:36, Gary V. Vaughan <gary@xxxxxxxxxx> wrote: >> On 27 Jul 2011, at 12:56, narke wrote: >>> With a same set of autoconf/automake files, how to I distribute my >>> program that allows user to build it with or without debug code >>> enabled? In my code, there are something like below: >>> >>> #if (__MY_DEBUG__) >>> ... >>> #endif >>> >>> Thanks in advance. >> >> >> For debug builds: >> >> ./configure CFLAGS='-g' CPPFLAGS=-D__MY_DEBUG__ >> > > For this approach, will it overwrite my already defined flags or just > append values to them? It usual that my CPPFLAGS had already set as > something like "-I/my/include" in a Makefile.am If the Makefile.am's have been written correctly (as described in the info manual and elsewhere), then CPPFLAGS/CFLAGS/LDFLAGS/etc should not be *set* in Makefile.am (although of course they are referenced often) because those are in the users' namespace. Instead, Makefile.am should be setting required (but not compiler specific!!) options inside AM_CPPFLAGS/AM_CFLAGS/AM_LDFLAGS/etc. The info manuals will help you here. Anyway, even if Makefile.am sets these flags incorrectly, since you set the options at configure time as shown above, you might still get away with it, since the configure values are then spliced into the generated Makefile's. Cheers, -- Gary V. Vaughan (gary AT gnu DOT org) _______________________________________________ Autoconf mailing list Autoconf@xxxxxxx https://lists.gnu.org/mailman/listinfo/autoconf
