commit a5e2eff5e9ffae25792d859213ddc73aeace80d4
author Christian Göttsche <cgzones@googlemail.com> Wed Aug 25 10:23:30 2021 +0200
committer BenBE <BenBE@geshi.org> Wed Aug 25 13:16:40 2021 +0200
tree b6c87f98922e7f6bba5af6bf8e52159d845c8ec0
parent 2bf626c4e4c827397d40c0b84a5023c308aeec73

configure: resolve autotools 2.70 deprecation warnings

    configure.ac:72: warning: The macro `AC_PROG_CC_C99' is obsolete.
    configure.ac:72: You should run autoupdate.
    ./lib/autoconf/c.m4:1659: AC_PROG_CC_C99 is expanded from...
    configure.ac:72: the top level
    configure.ac:134: warning: The macro `AC_HEADER_STDC' is obsolete.
    configure.ac:134: You should run autoupdate.
    ./lib/autoconf/headers.m4:704: AC_HEADER_STDC is expanded from...
    configure.ac:134: the top level

configure.ac

diff --git a/configure.ac b/configure.ac
index 8e7774f..71b93b4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -69,7 +69,7 @@
 
 AC_PROG_CC
 AM_PROG_CC_C_O
-AC_PROG_CC_C99
+m4_version_prereq([2.70], [], [AC_PROG_CC_C99])
 AS_IF([test "x$ac_cv_prog_cc_c99" = xno], [AC_MSG_ERROR([htop is written in C99. A newer compiler is required.])])
 
 # ----------------------------------------------------------------------
@@ -131,7 +131,7 @@
 # ----------------------------------------------------------------------
 
 AC_HEADER_DIRENT
-AC_HEADER_STDC
+m4_version_prereq([2.70], [AC_CHECK_INCLUDES_DEFAULT], [AC_HEADER_STDC])
 AC_CHECK_HEADERS([ \
     stdlib.h \
     string.h \