Re: [GNU Autoconf 2.60] testsuite: 131 134 135 137 190 198 failed

[Paul Eggert]

Thanks for your bug report.

Pierre <address@hidden> writes:

>> configure:1805: checking for Fortran compiler default output file name
>> configure:1832: g95    conftest.f  >&5
>> Warnings: 0  Errors: 0
>> configure:1835: $? = 0
>> configure:1881: result: b.out

That "b.out" is due to a bug in Autoconf; it incorrectly deduced the
name of the executable.  What is the name of the executable that your
GNU Fortran 95 compiler outputs?  That is, if you execute this shell
script:

        cat >conftest.f <<'EOF'
              program main

              end
        EOF
        g95 conftest.f

what file does your g95 compiler create?

I installed the following patch to fix the other bugs noted in your
report.  Thanks again.

2006-08-06  Paul Eggert  <address@hidden>

        Fix test suite failures reported by Pierre in
        <http://lists.gnu.org/archive/html/bug-autoconf/2006-08/msg00005.html>.
        * lib/autoconf/lang.m4 (_AC_COMPILER_EXEEXT_DEFAULT): Don't claim
        the compiler created a file "b.out" when it didn't create anything
        at all.
        * lib/autoconf/specific.m4 (AC_SYS_INTERPRETER):
        Discard stderr too, when invoking the test script.

--- lib/autoconf/lang.m4        30 May 2006 07:28:02 -0000      1.183
+++ lib/autoconf/lang.m4        7 Aug 2006 07:08:27 -0000
@@ -500,7 +500,7 @@ AS_IF([_AC_DO_VAR(ac_link_default)],
 # in a Makefile.  We should not override ac_cv_exeext if it was cached,
 # so that the user can short-circuit this test for compilers unknown to
 # Autoconf.
-for ac_file in $ac_files
+for ac_file in $ac_files ''
 do
   test -f "$ac_file" || continue
   case $ac_file in
@@ -527,10 +527,12 @@ do
 done
 test "$ac_cv_exeext" = no && ac_cv_exeext=
 ],
-      [_AC_MSG_LOG_CONFTEST
+      [ac_file=''])
+AC_MSG_RESULT([$ac_file])
+AS_IF([test -z "$ac_file"],
+[_AC_MSG_LOG_CONFTEST
 AC_MSG_FAILURE([_AC_LANG compiler cannot create executables], 77)])
 ac_exeext=$ac_cv_exeext
-AC_MSG_RESULT([$ac_file])
 ])# _AC_COMPILER_EXEEXT_DEFAULT
 
 
--- lib/autoconf/specific.m4    26 May 2006 22:29:50 -0000      1.368
+++ lib/autoconf/specific.m4    7 Aug 2006 07:08:27 -0000
@@ -85,7 +85,7 @@ AC_DEFUN([AC_SYS_INTERPRETER],
 exit 69
 ' >conftest
 chmod u+x conftest
-(SHELL=/bin/sh; export SHELL; ./conftest >/dev/null)
+(SHELL=/bin/sh; export SHELL; ./conftest >/dev/null 2>&1)
 if test $? -ne 69; then
    ac_cv_sys_interpreter=yes
 else