Hello, I've run into a problem while porting my autoconf scripts from 2.13 to 2.52. I used the following m4 code in one of my scripts:
ifelse(AC_LANG,C,AC_REQUIRE([AC_PROG_CC])) This works in 2.13 because AC_LANG_C defines AC_LANG to C, but 2.52 defines AC_LANG much differently and 'autoheader' fails when processing my code. I'd like to delay using AC_PREQ([2.52]) until the rest of my team can upgrade, but is there anyway to have a version of my macro that will support both versions? I've tried using nested ifelse statements in conjunction with AC_ACVERSION to no avail. m4 always want to expand the AC_LANG macro even when the ifelse evaluates around it. I also noticed that autoconf 2.52 contains a macro called _AC_LANG_ABBREV. Is this how I should implement this type of thing in 2.52? Does the preceeding '_' mean that the function is for internal use only? Travis
