drop obsolete usage of AC_EXEEXT and AC_OBJEXT

[Ralf Wildenhues]

Applied to HEAD as obvious.

Cheers,
Ralf

2008-03-08  Ralf Wildenhues  <address@hidden>

        Drop usage of obsolete macros AC_EXEEXT and AC_OBJEXT.
        * libltdl/m4/libtool.m4 (_LT_ENABLE_LOCK, _LT_COMPILER_OPTION)
        (_LT_COMPILER_C_O, LT_PATH_NM, _LT_CMD_GLOBAL_SYMBOLS, _LT_SETUP):
        Drop usage of obsolete AC_OBJEXT and AC_EXEEXT.
        * tests/am-subdir.at (C++ subdir-objects): Likewise.

Index: libltdl/m4/libtool.m4
===================================================================
RCS file: /cvsroot/libtool/libtool/libltdl/m4/libtool.m4,v
retrieving revision 1.141
diff -u -r1.141 libtool.m4
--- libltdl/m4/libtool.m4       7 Mar 2008 06:42:36 -0000       1.141
+++ libltdl/m4/libtool.m4       8 Mar 2008 12:13:01 -0000
@@ -155,9 +155,7 @@
 _LT_DECL([], [LN_S], [1], [Whether we need soft or hard links])dnl
 dnl
 AC_REQUIRE([LT_CMD_MAX_LEN])dnl
-AC_REQUIRE([AC_OBJEXT])dnl
 _LT_DECL([objext], [ac_objext], [0], [Object file suffix (normally "o")])dnl
-AC_REQUIRE([AC_EXEEXT])dnl
 _LT_DECL([], [exeext], [0], [Executable file suffix (normally "")])dnl
 dnl
 m4_require([_LT_FILEUTILS_DEFAULTS])dnl
@@ -1194,8 +1192,7 @@
 # _LT_ENABLE_LOCK
 # ---------------
 m4_defun([_LT_ENABLE_LOCK],
-[AC_REQUIRE([AC_OBJEXT])dnl
-AC_ARG_ENABLE([libtool-lock],
+[AC_ARG_ENABLE([libtool-lock],
   [AS_HELP_STRING([--disable-libtool-lock],
     [avoid locking (might break parallel builds)])])
 test "x$enable_libtool_lock" != xno && enable_libtool_lock=yes
@@ -1384,8 +1381,7 @@
 # ----------------------------------------------------------------
 # Check whether the given compiler option works
 AC_DEFUN([_LT_COMPILER_OPTION],
-[AC_REQUIRE([AC_OBJEXT])dnl
-m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+[m4_require([_LT_FILEUTILS_DEFAULTS])dnl
 m4_require([_LT_DECL_SED])dnl
 AC_CACHE_CHECK([$1], [$2],
   [$2=no
@@ -1837,8 +1833,7 @@
 # Check to see if options -c and -o are simultaneously supported by compiler.
 # This macro does not hard code the compiler like AC_PROG_CC_C_O.
 m4_defun([_LT_COMPILER_C_O],
-[AC_REQUIRE([AC_OBJEXT])dnl
-m4_require([_LT_DECL_SED])dnl
+[m4_require([_LT_DECL_SED])dnl
 m4_require([_LT_FILEUTILS_DEFAULTS])dnl
 m4_require([_LT_TAG_COMPILER])dnl
 AC_CACHE_CHECK([if $compiler supports -c -o file.$ac_objext],
@@ -3143,7 +3138,6 @@
 # find the pathname to a BSD- or MS-compatible name lister
 AC_DEFUN([LT_PATH_NM],
 [AC_REQUIRE([AC_PROG_CC])dnl
-AC_REQUIRE([AC_OBJEXT])dnl
 AC_CACHE_CHECK([for BSD- or MS-compatible name lister (nm)], lt_cv_path_NM,
 [if test -n "$NM"; then
   # Let the user override the test.
@@ -3279,7 +3273,6 @@
 m4_defun([_LT_CMD_GLOBAL_SYMBOLS],
 [AC_REQUIRE([AC_CANONICAL_HOST])dnl
 AC_REQUIRE([AC_PROG_CC])dnl
-AC_REQUIRE([AC_OBJEXT])dnl
 AC_REQUIRE([LT_PATH_NM])dnl
 AC_REQUIRE([LT_PATH_LD])dnl
 m4_require([_LT_DECL_SED])dnl
Index: tests/am-subdir.at
===================================================================
RCS file: /cvsroot/libtool/libtool/tests/am-subdir.at,v
retrieving revision 1.15
diff -u -r1.15 am-subdir.at
--- tests/am-subdir.at  12 Jan 2008 14:07:02 -0000      1.15
+++ tests/am-subdir.at  8 Mar 2008 12:13:01 -0000
@@ -101,18 +101,6 @@
 AC_PROG_CXX
 AC_PROG_CXXCPP
 
-# As of the writing of this demo, GNU Autoconf's AC_OBJEXT and
-# AC_EXEEXT macros only works for C compilers!
-# Libtool's setup macro calls AC_OBJEXT and AC_EXEEXT without setting
-# the test language to C.  We do it before any libtool setup macros are
-# called so that the proper values are cached beforehand.  We also do
-# it before any linker flags (LDFLAGS) are set so that C++ specific
-# ones don't break the tests.
-AC_LANG_PUSH([C])
-AC_OBJEXT
-AC_EXEEXT
-AC_LANG_POP
-
 AC_LANG([C++])
 LT_INIT([win32-dll])