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| author | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
|---|---|---|
| committer | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
| commit | 5f8de423f190bbb79a62f804151bc24824fa32d8 (patch) | |
| tree | 10027f336435511475e392454359edea8e25895d /build/autoconf/hotfixes.m4 | |
| parent | 49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff) | |
| download | uxp-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.gz | |
Add m-esr52 at 52.6.0
Diffstat (limited to 'build/autoconf/hotfixes.m4')
| -rw-r--r-- | build/autoconf/hotfixes.m4 | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/build/autoconf/hotfixes.m4 b/build/autoconf/hotfixes.m4 new file mode 100644 index 0000000000..9c8362041f --- /dev/null +++ b/build/autoconf/hotfixes.m4 @@ -0,0 +1,23 @@ +dnl This Source Code Form is subject to the terms of the Mozilla Public +dnl dnl License, v. 2.0. If a copy of the MPL was not distributed with this +dnl dnl file, You can obtain one at http://mozilla.org/MPL/2.0/. + +dnl Set of hotfixes to address issues in autoconf 2.13 + +dnl Divert AC_CHECK_FUNC so that the #includes it uses can't interfere +dnl with the function it tests. +dnl So, when testing e.g. posix_memalign, any #include that AC_CHECK_FUNC +dnl prints is replaced with: +dnl #define posix_memalign innocuous_posix_memalign +dnl #include "theinclude" +dnl #undef posix_memalign +dnl This avoids double declaration of that function when the header normally +dnl declares it, while the test itself is just expecting the function not to be +dnl declared at all, and declares it differently (which doesn't matter for the +dnl test itself). +dnl More recent versions of autoconf are essentially doing this. +define([_AC_CHECK_FUNC],defn([AC_CHECK_FUNC]))dnl +define([AC_CHECK_FUNC], [dnl +patsubst(_AC_CHECK_FUNC($@), [#include.*$], [#define $1 innocuous_$1 +\& +#undef $1])])dnl |