FYI: AC_OBJEXT again^42

[Akim Demaille]

Index: ChangeLog
from  Akim Demaille  <address@hidden>
        * aclang.m4 (_AC_COMPILER_OBJEXT): Don't rely on
        _AC_COMPILE_IFELSE which uses ac_objext in a `test -s'.
        Reported by Lars J. Aas.

2000-12-19  Akim Demaille  <address@hidden>

Index: aclang.m4
===================================================================
RCS file: /cvs/autoconf/aclang.m4,v
retrieving revision 1.99
diff -u -u -r1.99 aclang.m4
--- aclang.m4 2000/12/19 09:32:54 1.99
+++ aclang.m4 2000/12/19 10:45:03
@@ -723,10 +723,14 @@
 # determined by ac_objext.
 #
 # This macro is called by AC_LANG_COMPILER, the latter being required
-# by the AC_COMPILE_IFELSE macros, so use _AC_COMPILE_IFELSE.
+# by the AC_COMPILE_IFELSE macros, so use _AC_COMPILE_IFELSE.  And in fact,
+# don't, since _AC_COMPILE_IFELSE needs to know ac_objext for the `test -s'
+# it includes.  So do it by hand.
 m4_define([_AC_COMPILER_OBJEXT],
 [AC_CACHE_CHECK([for object suffix], ac_cv_objext,
-[_AC_COMPILE_IFELSE([AC_LANG_PROGRAM()],
+[AC_LANG_CONFTEST([AC_LANG_PROGRAM()])
+rm -f conftest.o conftest.obj
+AS_IFELSE([AC_TRY_EVAL(ac_compile)],
 [for ac_file in `ls conftest.o conftest.obj conftest.* 2>/dev/null`; do
   case $ac_file in
     *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb ) ;;
@@ -734,8 +738,10 @@
        break;;
   esac
 done],
-                     [AC_MSG_ERROR([cannot compute OBJEXT: cannot compile])])
-rm -f conftest.$ac_cv_objext])
+          [echo "$as_me: failed program was:" >&AS_MESSAGE_LOG_FD
+cat conftest.$ac_ext >&AS_MESSAGE_LOG_FD
+AC_MSG_ERROR([cannot compute OBJEXT: cannot compile])])
+rm -f conftest.$ac_cv_objext conftest.$ac_ext])
 AC_SUBST([OBJEXT], [$ac_cv_objext])dnl
 ac_objext=$OBJEXT
 ])# _AC_COMPILER_OBJEXT