search for: ac_prog_

...fine the variables listed in the second argument if debug is enabled, +# defaulting to no variables. Defines the variables listed in the third +# argument if debug is disabled, defaulting to NDEBUG. All lists of +# variables should be space-separated. +# +# If debug is not enabled, ensure AC_PROG_* will not add debugging flags. +# Should be invoked prior to any AC_PROG_* compiler checks. +# +# IS-RELEASE can be used to change the default to 'no' when making a +# release. Set IS-RELEASE to 'yes' or 'no' as appropriate. By default, it +# uses the value of $ax_i...

...LAGS" | sed 's/-O2//') +dnl If debugging is disabled AND no CFLAGS/CXXFLAGS/CPPFLAGS/LDFLAGS +dnl are provided, we can set defaults to our liking +AS_IF([test "x${ax_enable_debug}" = "xno" && test "x${enable_flags_setting}" = "xyes"], [ + AC_PROG_SED + CFLAGS=$(echo "$CFLAGS" | $SED 's/-O2//') CFLAGS="-O3 -funroll-loops $CFLAGS" -fi +]) XIPH_GCC_VERSION @@ -406,7 +405,28 @@ if test x$ac_cv_c_compiler_gnu = xyes ; then CXXFLAGS="$CXXFLAGS -Wall -Wextra -Wcast-align -Wshadow -Wwrite-strings -Wctor-dtor...

Hi Erik, I've found a middleground for the problem of setting default CFLAGS. I've gone back to setting them if {C,CXX,CPP,LD}FLAGS are unset at the onset of the configure script (i.e., the user hasn't specified anything) and then proceed to set them to the defaults as before. This has been suggested before: https://lists.gnu.org/archive/html/autoconf/2006-04/msg00022.html In

Dear FLAC devs, I would like to get some of our patches merged into master. Most of them deal with adhering to GNU conventions, respectively not overriding flags/variables that are up to the user to set. For instance, honoring $(htmldir) is important, as we have installation paths for the documentation that differ from what is currently coded in the various Makefile.am's. Regards David