411 REFERENCE · Wikibooks
ROSE Compiler Framework/Autotools
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
Autoconf
Utility Macros
AX_PROG_DOXYGEN -- check for Doxygen
http://www.gnu.org/software/autoconf-archive/ax_prog_doxygen.html
AX_WITH_PROG([VARIABLE],[program],[VALUE-IF-NOT-FOUND],[PATH])
check for a certain program in $PATH
http://www.gnu.org/software/autoconf-archive/ax_with_prog.html
AX_COMPARE_VERSION(VERSION_A, OP, VERSION_B, [ACTION-IF-TRUE], [ACTION-IF-FALSE])
compare version number strings
http://www.gnu.org/software/autoconf-archive/ax_compare_version.html