# HG changeset patch
# User Rik <rik@octave.org>
# Date 1424896932 28800
# Node ID 6b851f6acd55adb146a08d87b65c846e998c4f2e
# Parent  19755f4fc851f3fa8721c1885d32f99a2d654d13
configure.ac: Remove a few more test x"" instances.

* configure.ac: Don't use x"$VAR" for testing enable_shared and enable_static.
Rewrite FFLAGS testing to use -z to avoid testing for x"".  Rewrite F77 compiler
existence test to use -n to ovaid testing for x"".

diff -r 19755f4fc851 -r 6b851f6acd55 configure.ac
--- a/configure.ac	Wed Feb 25 11:55:49 2015 -0800
+++ b/configure.ac	Wed Feb 25 12:42:12 2015 -0800
@@ -601,7 +601,7 @@
 ### Determine the Fortran compiler and how to invoke it
 
 ## Default FFLAGS is -O.
-if test x"$FFLAGS" = x""; then
+if test -z "$FFLAGS"; then
   FFLAGS="-O"
 fi
 
@@ -615,15 +615,14 @@
   AC_MSG_ERROR([g77 is not a supported Fortran compiler.  Select another compiler by setting the environment variable F77 and re-running configure.])
 fi
 
-AC_MSG_CHECKING([if we have a usable Fortran compiler])
-if test x"$F77" = x""; then
+AC_MSG_CHECKING([whether a usable Fortran compiler was found])
+if test -n "$F77"; then
+  AC_MSG_RESULT(yes)
+else
   AC_MSG_RESULT(no)
-  AC_MSG_ERROR(No Fortran compiler found)
-else
-  AC_MSG_RESULT(yes)
+  AC_MSG_ERROR([A Fortran compiler is required])
 fi
 
-
 ## Determine calling conventions for Fortran compiler
 AC_F77_LIBRARY_LDFLAGS
 AC_F77_DUMMY_MAIN
@@ -1414,13 +1413,13 @@
 LT_PREREQ([2.2.2])
 LT_INIT([disable-static dlopen win32-dll])
 
-if test x"$enable_shared" = x"yes"; then
+if test $enable_shared = yes; then
   SHARED_LIBS=yes
 else
   SHARED_LIBS=no
 fi
 
-if test x"$enable_static" = x"yes"; then
+if test $enable_static = yes; then
   STATIC_LIBS=yes
 else
   STATIC_LIBS=no