On 27 July 2011 21:13, Gary V. Vaughan <gary@xxxxxxx> wrote: > 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) > > Gary, Thanks! Understood. -- Life is the only flaw in an otherwise perfect nonexistence -- Schopenhauer narke public key at http://subkeys.pgp.net:11371 (narkewoody@xxxxxxxxx) _______________________________________________ Autoconf mailing list Autoconf@xxxxxxx https://lists.gnu.org/mailman/listinfo/autoconf
