Do not check Mac-related issues if not requested

   (merge https://trac.osgeo.org/grass/changeset/39062 from devbr6)


git-svn-id: https://svn.osgeo.org/grass/grass/trunk@39063 15284696-431f-4ddb-bdfa-cd5b030d7da7

configure.in

@@ -148,58 +148,57 @@ esac
 AC_MSG_RESULT("$enable_macosx_app")
 AC_SUBST(MACOSX_APP)
 
-# Check for MacOSX archs
-
-AC_MSG_CHECKING(for MacOSX architectures)
-
-MACOSX_ARCHS=
-
-if test "$with_macosx_archs" = "no" ; then
-  AC_MSG_RESULT(no)
-else
-  for a in $with_macosx_archs
-  do
-    # check if valid arch?
-    case "$a" in
-      i386|ppc|x86_64|ppc64)
-        MACOSX_ARCHS="$MACOSX_ARCHS -arch $a"
-        ;;
-    esac
-  done
-  AC_MSG_RESULT([$MACOSX_ARCHS])
-  LDFLAGS="$LDFLAGS $MACOSX_ARCHS"
-  CFLAGS="$CFLAGS $MACOSX_ARCHS"
-  CXXFLAGS="$CXXFLAGS $MACOSX_ARCHS"
-fi
-
-AC_SUBST(MACOSX_ARCHS)
-
-# Done checking MacOSX archs
-
-# Check for MacOSX SDK
-
-AC_MSG_CHECKING(for MacOSX SDK)
-
-MACOSX_SDK=
-
-if test "$with_macosx_sdk" = "no" ; then
-  AC_MSG_RESULT(no)
-else
-  AC_CHECK_FILE($with_macosx_sdk/SDKSettings.plist, [
-    MACOSX_SDK="-isysroot $with_macosx_sdk"],[
-    AC_MSG_ERROR([*** specified SDK does not exist or is not a SDK])])
-  LDFLAGS="$LDFLAGS $MACOSX_SDK"
-  CFLAGS="$CFLAGS $MACOSX_SDK"
-  CXXFLAGS="$CXXFLAGS $MACOSX_SDK"
-fi
-
-AC_SUBST(MACOSX_SDK)
-
-# Done checking MacOSX SDK
-
-# Set INST_DIR
-
 if test -n "$MACOSX_APP" ; then
+    # Check for MacOSX archs
+    
+    AC_MSG_CHECKING(for MacOSX architectures)
+    
+    MACOSX_ARCHS=
+    
+    if test "$with_macosx_archs" = "no" ; then
+      AC_MSG_RESULT(no)
+    else
+      for a in $with_macosx_archs
+      do
+        # check if valid arch?
+        case "$a" in
+          i386|ppc|x86_64|ppc64)
+            MACOSX_ARCHS="$MACOSX_ARCHS -arch $a"
+            ;;
+        esac
+      done
+      AC_MSG_RESULT([$MACOSX_ARCHS])
+      LDFLAGS="$LDFLAGS $MACOSX_ARCHS"
+      CFLAGS="$CFLAGS $MACOSX_ARCHS"
+      CXXFLAGS="$CXXFLAGS $MACOSX_ARCHS"
+    fi
+    
+    AC_SUBST(MACOSX_ARCHS)
+    
+    # Done checking MacOSX archs
+    
+    # Check for MacOSX SDK
+    
+    AC_MSG_CHECKING(for MacOSX SDK)
+    
+    MACOSX_SDK=
+    
+    if test "$with_macosx_sdk" = "no" ; then
+      AC_MSG_RESULT(no)
+    else
+      AC_CHECK_FILE($with_macosx_sdk/SDKSettings.plist, [
+        MACOSX_SDK="-isysroot $with_macosx_sdk"],[
+        AC_MSG_ERROR([*** specified SDK does not exist or is not a SDK])])
+      LDFLAGS="$LDFLAGS $MACOSX_SDK"
+      CFLAGS="$CFLAGS $MACOSX_SDK"
+      CXXFLAGS="$CXXFLAGS $MACOSX_SDK"
+    fi
+    
+    AC_SUBST(MACOSX_SDK)
+    
+    # Done checking MacOSX SDK
+
+    # Set INST_DIR
     INSTDIR='${prefix}'"/GRASS-${GRASS_VERSION_MAJOR}.${GRASS_VERSION_MINOR}.app/Contents/MacOS"
 else
     INSTDIR='${prefix}'"/grass-${GRASS_VERSION_MAJOR}.${GRASS_VERSION_MINOR}.${GRASS_VERSION_RELEASE}"