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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 14:24:43 +0200 |
| commit | a2e129a81fe95261342b6f76a3c2474b95e4cf82 (patch) | |
| tree | c34bba506e1c484398b244b1869efcafc340ac8d /configure.ac | |
| parent | Build: configure.ac: Use AS_IF and AS_CASE where required. (diff) | |
| download | xz-a2e129a81fe95261342b6f76a3c2474b95e4cf82.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 440ec990..9dfe8098 100644 --- a/configure.ac +++ b/configure.ac @@ -550,6 +550,9 @@ echo "Initializing Automake:" AM_INIT_AUTOMAKE([1.12 foreign tar-v7 filename-length-max=99 serial-tests -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= 2.70 warns that AC_PROG_CC_C99 is obsolete.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.]) |