Preliminary test for Clang compiler.

1 files changed, 24 insertions, 20 deletions

diff --git a/configure b/configure
index aff7983b..88dbbc3c 100755
--- a/configure
+++ b/configure
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.69 for OpenAxiom 1.5.0-2014-08-26.
+# Generated by GNU Autoconf 2.69 for OpenAxiom 1.5.0-2014-11-20.
 #
 # Report bugs to <open-axiom-bugs@lists.sf.net>.
 #
@@ -590,8 +590,8 @@ MAKEFLAGS=
 # Identity of this package.
 PACKAGE_NAME='OpenAxiom'
 PACKAGE_TARNAME='openaxiom'
-PACKAGE_VERSION='1.5.0-2014-08-26'
-PACKAGE_STRING='OpenAxiom 1.5.0-2014-08-26'
+PACKAGE_VERSION='1.5.0-2014-11-20'
+PACKAGE_STRING='OpenAxiom 1.5.0-2014-11-20'
 PACKAGE_BUGREPORT='open-axiom-bugs@lists.sf.net'
 PACKAGE_URL=''
 
@@ -1420,7 +1420,7 @@ if test "$ac_init_help" = "long"; then
   # Omit some internal or obsolete options to make the list less imposing.
   # This message is too long to be a string in the A/UX 3.1 sh.
   cat <<_ACEOF
-\`configure' configures OpenAxiom 1.5.0-2014-08-26 to adapt to many kinds of systems.
+\`configure' configures OpenAxiom 1.5.0-2014-11-20 to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1495,7 +1495,7 @@ fi
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of OpenAxiom 1.5.0-2014-08-26:";;
+     short | recursive ) echo "Configuration of OpenAxiom 1.5.0-2014-11-20:";;
    esac
   cat <<\_ACEOF
 
@@ -1612,7 +1612,7 @@ fi
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-OpenAxiom configure 1.5.0-2014-08-26
+OpenAxiom configure 1.5.0-2014-11-20
 generated by GNU Autoconf 2.69
 
 Copyright (C) 2012 Free Software Foundation, Inc.
@@ -2429,7 +2429,7 @@ cat >config.log <<_ACEOF
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
-It was created by OpenAxiom $as_me 1.5.0-2014-08-26, which was
+It was created by OpenAxiom $as_me 1.5.0-2014-11-20, which was
 generated by GNU Autoconf 2.69.  Invocation command line was
 
   $ $0 $@
@@ -3448,7 +3448,7 @@ fi
 
 # Define the identity of the package.
  PACKAGE='openaxiom'
- VERSION='1.5.0-2014-08-26'
+ VERSION='1.5.0-2014-11-20'
 
 
 cat >>confdefs.h <<_ACEOF
@@ -3953,8 +3953,8 @@ case ${oa_lisp_flavor},$host in
 esac
 
 
-## Are we using compilers from GNU?
-oa_gnu_compiler=no
+## Where are the compilers coming from?  GNU? Clang?
+oa_cxx_compiler_lineage=unknown
 ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -5317,12 +5317,16 @@ fi
 
 
 if test x$GCC = xyes || test x$GXX = xyes; then
-  oa_gnu_compiler=yes
+  oa_cxx_compiler_lineage=gnu
+else
+  case `$CXX -v` in
+    *clang*) oa_cxx_compiler_lineage=clang ;;
+  esac
 fi
 ## Augment C and C++ compiler flags with ABI directives as appropriate
 ## before we proceed to infer other host datatype properties.
 if test -n "$oa_host_lisp_precision"; then
-   if test x$oa_gnu_compiler = xyes; then
+   if test $oa_cxx_compiler_lineage = gnu; then
      CPPFLAGS="$CPPFLAGS -m$oa_host_lisp_precision"
      LDFLAGS="$LDFLAGS -m$oa_host_lisp_precision"
    ## else, cross fingers and pray.
@@ -5331,8 +5335,8 @@ fi
 
 ## If we are using GCL as the base runtime system, then we do really need
 ## a C compiler from GNU.  Well, at least for the moment.
-case $oa_lisp_flavor,$oa_gnu_compiler in
-   gcl,yes)
+case $oa_lisp_flavor,$oa_cxx_compiler_lineage in
+   gcl,gnu)
        oa_cflags="-O2 -Wall -D_GNU_SOURCE"
        ;;
 
@@ -17252,8 +17256,8 @@ if test "${enable_threads+set}" = set; then :
 fi
 
 # GNU compilers want hints about multithreading.
-case $oa_gnu_compiler,$oa_enable_threads in
-   yes,yes)
+case $oa_cxx_compiler_lineage,$oa_enable_threads in
+   gnu,yes)
      oa_cflags="$oa_cflags -pthread"
 esac
 
@@ -19524,8 +19528,8 @@ fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $oa_alignas" >&5
 $as_echo "$oa_alignas" >&6; }
 
-case $oa_gnu_compiler in
-  yes)
+case $oa_cxx_compiler_lineage in
+  gnu|clang)
      CFLAGS="$CFLAGS -O2 -Wall"
      CXXFLAGS="$CXXFLAGS -O2 -Wall"
      ;;
@@ -20156,7 +20160,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
 # report actual input values of CONFIG_FILES etc. instead of their
 # values after options handling.
 ac_log="
-This file was extended by OpenAxiom $as_me 1.5.0-2014-08-26, which was
+This file was extended by OpenAxiom $as_me 1.5.0-2014-11-20, which was
 generated by GNU Autoconf 2.69.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -20226,7 +20230,7 @@ _ACEOF
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`"
 ac_cs_version="\\
-OpenAxiom config.status 1.5.0-2014-08-26
+OpenAxiom config.status 1.5.0-2014-11-20
 configured by $0, generated by GNU Autoconf 2.69,
   with options \\"\$ac_cs_config\\"