configure.ac: Segregate checks by source language better.

Move the poking-about-for-CPU-features function checks in with the rest
of the C code probing.

diff --git a/configure.ac b/configure.ac
index 902d7d5..f5d004f 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -130,15 +130,11 @@ case $CPUFAM in
   *) AC_MSG_RESULT([$CPUFAM/$ABI]) ;;
 esac
 
-dnl Some equipment wanted for checking CPU features at runtime.
-AC_CHECK_HEADERS([asm/hwcap.h])
-AC_CHECK_HEADERS([sys/auxv.h])
-AC_CHECK_HEADERS([linux/auxvec.h])
-AC_CHECK_FUNCS([getauxval])
-
 dnl--------------------------------------------------------------------------
 dnl C programming environment.
 
+AC_LANG([C])
+
 CATACOMB_LIBS=
 
 dnl Find out if we're cross-compiling.
@@ -162,6 +158,12 @@ AC_CHECK_HEADERS([stdint.h])
 AC_SUBST([have_stdint_h])
 AC_C_LONG_LONG
 
+dnl Some equipment wanted for checking CPU features at runtime.
+AC_CHECK_HEADERS([asm/hwcap.h])
+AC_CHECK_HEADERS([sys/auxv.h])
+AC_CHECK_HEADERS([linux/auxvec.h])
+AC_CHECK_FUNCS([getauxval])
+
 dnl Find the bit lengths of the obvious integer types.  This will be useful
 dnl when deciding on a representation for multiprecision integers.
 type_bits="" type_bits_sep=""