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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		9 years ago
..
Makefile	…
ac_func_accept_argtypes.m4	Remove some configure header-file checks that we weren't really using.	9 years ago
ax_prog_perl_modules.m4	Make configure check for IPC::Run when --enable-tap-tests is specified.	9 years ago
ax_pthread.m4	…
c-compiler.m4	Fix configure check for typeof	9 years ago
c-library.m4	Remove some configure header-file checks that we weren't really using.	9 years ago
config.guess	Update config.guess and config.sub	9 years ago
config.sub	Update config.guess and config.sub	9 years ago
docbook.m4	Further improve consistency of configure's program searching.	9 years ago
general.m4	…
install-sh	…
libtool.m4	…
missing	…
perl.m4	Further improve consistency of configure's program searching.	9 years ago
pkg.m4	ICU support	9 years ago
prep_buildtree	…
programs.m4	Further improve consistency of configure's program searching.	9 years ago
python.m4	Further improve consistency of configure's program searching.	9 years ago
tcl.m4	Further improve consistency of configure's program searching.	9 years ago