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| author | Lasse Collin <lasse.collin@tukaani.org> | 2023-03-21 14:07:51 +0200 |
|---|---|---|
| committer | Lasse Collin <lasse.collin@tukaani.org> | 2023-03-21 14:07:51 +0200 |
| commit | 8be136f667aaeb8f9e16fbd57a83cb282f0c27ff (patch) | |
| tree | 069241824a772291b577d87da51a995c9e08d812 /configure.ac | |
| parent | Build: configure.ac: Use AS_IF and AS_CASE where required. (diff) | |
| download | xz-8be136f667aaeb8f9e16fbd57a83cb282f0c27ff.tar.xz | |
Build: Add a comment that AC_PROG_CC_C99 is needed for Autoconf 2.69.
It's obsolete in Autoconf >= 2.70 and just an alias for AC_PROG_CC
but Autoconf 2.69 requires AC_PROG_CC_C99 to get a C99 compiler.
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index a1f76c4d..9ab921e1 100644 --- a/configure.ac +++ b/configure.ac @@ -602,6 +602,9 @@ echo "Initializing Automake:" AM_INIT_AUTOMAKE([1.12 foreign tar-v7 filename-length-max=99 -Wno-unsupported]) AC_PROG_LN_S +dnl # Autoconf >= 2.70 warns that AC_PROG_CC_C99 is obsolete. However, +dnl # we have to keep using AC_PROG_CC_C99 instead of AC_PROG_CC +dnl # as long as we try to be compatible with Autoconf 2.69. AC_PROG_CC_C99 if test x$ac_cv_prog_cc_c99 = xno ; then AC_MSG_ERROR([No C99 compiler was found.]) |