Issue #1633863: Don't ignore $CC under AIX.

Misc/NEWS

@@ -214,6 +214,8 @@ Tests
 Build
 -----
 
+- Issue #1633863: Don't ignore $CC under AIX.
+
 - Issue #9552: Avoid unnecessary rebuild of OpenSSL. (Windows)
 
 - Issue #9810: Compile bzip2 source files in python's project file

configure

@@ -1,5 +1,5 @@
 #! /bin/sh
-# From configure.in Revision: 84674 .
+# From configure.in Revision: 84752 .
 # Guess values for system-dependent variables and create Makefiles.
 # Generated by GNU Autoconf 2.65 for python 3.2.
 #
@@ -3144,7 +3144,7 @@ if test "${with_gcc+set}" = set; then :
 else
 
 	case $ac_sys_system in
-	AIX*)   CC=cc_r
+	AIX*)   CC=${CC:-xlc_r}
 		without_gcc=;;
 	*)	without_gcc=no;;
 	esac
@@ -9230,7 +9230,6 @@ fi
     OPT="-DDYNAMIC_ANNOTATIONS_ENABLED=1 $OPT"
 fi
 
-
 # -I${DLINCLDIR} is added to the compile rule for importdl.o
 
 DLINCLDIR=.

configure.in

@@ -449,7 +449,7 @@ AC_ARG_WITH(gcc,
 		without_gcc=$withval;;
 	esac], [
 	case $ac_sys_system in
-	AIX*)   CC=cc_r
+	AIX*)   CC=${CC:-xlc_r}
 		without_gcc=;;
 	*)	without_gcc=no;;
 	esac])