build: remove call to AC_C_CONST()

> This macro is obsolescent, as current C compilers support const.
> New programs need not use this macro.

See: https://www.gnu.org/savannah-checkouts/gnu/autoconf/manual/autoconf-2.67/autoconf.html#index-AC_005fC_005fCONST-877.

diff --git a/configure.ac b/configure.ac
index ae086703a340e64dc04611abb88fccbc0ee728b9..077095681cc81592f0c787573e2688c0ee106ec9 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -281,7 +281,6 @@ if test x$bwin32 = xtrue; then
 fi
 
 dnl Checks for typedefs, structures, and compiler characteristics.
-AC_C_CONST
 AC_C_INLINE
 
 dnl Checks for library functions.