* skip some F90 tests if we aren't compilng F90

* Make sure to invalidate the cache on a couple of tests when we don't
  want F77/F90

This commit was SVN r8994.

config/f77_find_ext_symbol_convention.m4

@@ -21,6 +21,11 @@ dnl
 AC_DEFUN([OMPI_F77_FIND_EXT_SYMBOL_CONVENTION], [
     AC_REQUIRE([AC_PROG_NM])
 
+    # invalidate cache if result came from a run where F77 was disabled
+    if test "$ompi_cv_f77_external_symbol" = "skipped" ; then
+        unset ompi_cv_f77_external_symbol
+    fi
+
     AC_CACHE_CHECK([$F77 external symbol convention],
         [ompi_cv_f77_external_symbol],
         [if test "$F77" = "none" -o "$OMPI_WANT_F77_BINDINGS" = "0"; then

config/f77_get_value_true.m4

@@ -20,6 +20,11 @@ dnl
 # -------------------------------------------------------
 # Determine the value of .TRUE. of this FORTRAN compiler.
 AC_DEFUN([OMPI_F77_GET_VALUE_TRUE],[
+    # invalidate cache if result came from a run where F77 was disabled
+    if test "$ompi_cv_f77_true_value" = "0" ; then
+        unset ompi_cv_f77_true_value
+    fi
+
     AC_CACHE_CHECK([FORTRAN value for .TRUE. logical type],
         [ompi_cv_f77_true_value],
         [if test "$1" = "none" -o "$OMPI_WANT_F77_BINDINGS" = "0" ; then

config/f90_find_module_include_flag.m4

@@ -20,16 +20,14 @@ dnl
 AC_DEFUN([OMPI_F90_FIND_MODULE_INCLUDE_FLAG],[
     AS_VAR_PUSHDEF([f90_inc_var], [ompi_cv_f90_module_include_flag])
     
-    AC_CACHE_CHECK([for Fortran 90 compiler module include flag], f90_inc_var,
+    if test "$OMPI_WANT_F90_BINDINGS" -eq 1 ; then
+        AC_CACHE_CHECK([for Fortran 90 compiler module include flag], 
+           f90_inc_var,
            [ofi_possible_flags="-I -p -M"
-
             mkdir conftest.$$
             cd conftest.$$
 
-         #
             # Try to compile an F90 module
-         #
-
             mkdir subdir
             cd subdir
             cat > conftest-module.f90 <<EOF
@@ -43,9 +41,11 @@ end module OMPI_MOD_FLAG
 EOF
 
             OMPI_LOG_COMMAND([$FC $FCFLAGS $FCFLAGS_f90 -c conftest-module.f90 $LDFLAGS $LIBS], , 
+                [cd  ..
+                 rm -rf conftest.$$
                  AC_MSG_RESULT([Whoops!])
                  AC_MSG_WARN([*** Cannot seem to compile an f90 module])
-                 AC_MSG_ERROR([Cannot continue]))
+                 AC_MSG_ERROR([Cannot continue])])
             cd ..
 
             #
@@ -76,6 +76,9 @@ EOF
         AC_MSG_WARN([*** Could not determine the f90 compiler flag to indicate where modules reside])
         AC_MSG_ERROR([*** Cannot continue])
         fi
+    else
+        OMPI_FC_MODULE_FLAG=
+    fi
     AC_SUBST(OMPI_FC_MODULE_FLAG)
     AS_VAR_POPDEF([f90_inc_var])
 ])dnl

config/f90_get_int_kind.m4

@@ -22,6 +22,7 @@ dnl
 AC_DEFUN([OMPI_F90_GET_INT_KIND],[
     AS_VAR_PUSHDEF([type_var], [ompi_cv_f90_int_kind_$2])
 
+    if test "$OMPI_WANT_F90_BINDINGS" -eq 1 ; then
         AC_CACHE_CHECK([Fortran 90 kind of $1 (selected_int_kind($2))], 
             type_var,
             [cat > conftestf.f90 <<EOF
@@ -54,5 +55,8 @@ EOF
         rm -f conftest*])
 
         $3=AS_VAR_GET(type_var)
+    else
+        $3=0
+    fi
     AS_VAR_POPDEF([type_var])dnl
 ])