Re: fort77(f2c wrapper) is not properly detected

[Ralf Wildenhues]

* Giulio Paci wrote on Tue, Dec 07, 2010 at 01:43:15AM CET:
> Il 05/12/2010 22:19, Ralf Wildenhues ha scritto:
> Output changes from:
> 
> Fortran low level compiling/preprocessing macros.
> 
> 303: GNU Fortran 77                                  FAILED (fortran.at:31)
> 304: GNU Fortran                                     ok
[...]

> To:
> 
> Fortran low level compiling/preprocessing macros.
> 
> 303: GNU Fortran 77                                  FAILED (fortran.at:31)
> 304: GNU Fortran                                     ok

This was still missing from a testsuite run with f2c wrapper fort77
fully passing.  The patch below corrects that.

OK to push?

Thanks,
Ralf

    2011-03-04  Ralf Wildenhues  <address@hidden>
    
    * tests/fortran.at (GNU Fortran 77): Try to detect f2c wrapper
    fort77 as GNU as well: it defines __GNUC__ too.  Fixes testsuite
    failure when f77 is fort77.
    Report from Giulio Paci.

diff --git a/tests/fortran.at b/tests/fortran.at
index 741525e..4639a3a 100644
--- a/tests/fortran.at
+++ b/tests/fortran.at
@@ -32,17 +32,19 @@ AT_CHECK_MACRO([GNU Fortran 77],
 [[AC_LANG(Fortran 77)
 AC_LANG_COMPILER
 
-if AC_TRY_COMMAND([$F77 --version | grep GNU >&2]); then
+: > conftest.f
+if AC_TRY_COMMAND([$F77 --version | grep GNU >&2]) \
+   || AC_TRY_COMMAND([$F77 -v -c conftest.f 2>&1 | grep "f2c " >&2]); then
   # Be sure to remove files which might be created by compilers that
-  # don't support --version.
-  rm -f a.exe a.out
+  # don't support --version, or by the second compile.
+  rm -f a.exe a.out conftest.f conftest.$ac_objext
   # Has GNU in --version.
   test "$G77" != yes &&
     AC_MSG_ERROR([failed to recognize GNU Fortran 77 compiler])
 else
   # Be sure to remove files which might be created by compilers that
-  # don't support --version.
-  rm -f a.exe a.out
+  # don't support --version, or by the second compile.
+  rm -f a.exe a.out conftest.f conftest.$ac_objext
   # Has not.
   test "$G77" = yes &&
     AC_MSG_ERROR([incorrectly recognized a GNU Fortran 77 compiler])