Tom Lane b21c569cea Further improve consistency of configure's program searching. ... Peter Eisentraut noted that commit 40b9f1921 had broken a configure behavior that some people might rely on: AC_CHECK_PROGS(FOO,...) will allow the search to be overridden by specifying a value for FOO on configure's command line or in its environment, but AC_PATH_PROGS(FOO,...) accepts such an override only if it's an absolute path. We had worked around that behavior for some, but not all, of the pre-existing uses of AC_PATH_PROGS by just skipping the macro altogether when FOO is already set. Let's standardize on that workaround for all uses of AC_PATH_PROGS, new and pre-existing, by wrapping AC_PATH_PROGS in a new macro PGAC_PATH_PROGS. While at it, fix a deficiency of the old workaround code by making sure we report the setting to configure's log. Eventually I'd like to improve PGAC_PATH_PROGS so that it converts non-absolute override inputs to absolute form, eg "PYTHON=python3" becomes, say, PYTHON = /usr/bin/python3. But that will take some nontrivial coding so it doesn't seem like a thing to do in late beta. Discussion: https://postgr.es/m/90a92a7d-938e-507a-3bd7-ecd2b4004689@2ndquadrant.com		2017-08-01 11:40:08 -04:00
..
ac_func_accept_argtypes.m4	Remove some configure header-file checks that we weren't really using.	2017-02-25 18:10:09 -05:00
ax_prog_perl_modules.m4	Make configure check for IPC::Run when --enable-tap-tests is specified.	2017-06-15 15:56:12 -04:00
ax_pthread.m4	Update ax_pthread.m4 to an experimental draft version from upstream.	2015-07-30 14:14:50 +03:00
c-compiler.m4	Fix configure check for typeof	2017-03-28 22:28:56 -04:00
c-library.m4	Remove some configure header-file checks that we weren't really using.	2017-02-25 18:10:09 -05:00
config.guess	Update config.guess and config.sub	2017-05-14 11:09:34 -04:00
config.sub	Update config.guess and config.sub	2017-05-14 11:09:34 -04:00
docbook.m4	Further improve consistency of configure's program searching.	2017-08-01 11:40:08 -04:00
general.m4	Remove useless whitespace at end of lines	2010-11-23 22:34:55 +02:00
install-sh	Fix install-strip on Mac OS X	2012-08-21 23:42:43 -04:00
libtool.m4	Rename AC_PROG_LD* macros to PGAC_PROG_LD*. This avoids clashes with the	2004-07-17 18:53:56 +00:00
Makefile	Install our "missing" script where PGXS builds can find it.	2015-12-11 16:15:05 -05:00
missing	Remove cvs keywords from all files.	2010-09-20 22:08:53 +02:00
perl.m4	Further improve consistency of configure's program searching.	2017-08-01 11:40:08 -04:00
pkg.m4	ICU support	2017-03-23 15:28:48 -04:00
prep_buildtree	find -path is not portable, so use grep -v instead.	2010-10-25 10:04:00 -03:00
programs.m4	Further improve consistency of configure's program searching.	2017-08-01 11:40:08 -04:00
python.m4	Further improve consistency of configure's program searching.	2017-08-01 11:40:08 -04:00
tcl.m4	Further improve consistency of configure's program searching.	2017-08-01 11:40:08 -04:00