Simplified 'configure' / build system

* reduced duplicated auto-code
* renamed '--enable-newwmspec' to '--enable-ewmh'
* don't compile 'Slit'-code when '--disable-slit'
* use AS_IF() in configure.in
* use AS_HELP_STRING() instead of obsolete AC_HELP_STRING in configure.in
* removed redundant calls to 'imlib2-config' to fill in $IMLIB2_CFLAGS
  and $IMLIB2_LIBS, AC_PATH_GENERIC() does that out of the box already

1 files changed, 3 insertions, 3 deletions

diff --git a/src/main.cc b/src/main.cc
index 2afef3f..c93aabf 100644
--- a/src/main.cc
+++ b/src/main.cc
@@ -152,9 +152,9 @@ static void showInfo(ostream &ostr) {
 #endif // DEBUG
         "DEBUG" << endl <<
 
-#ifndef USE_NEWWMSPEC
+#ifndef USE_EWMH
         NOT <<
-#endif // USE_NEWWMSPEC
+#endif // USE_EWMH
         "EWMH" << endl <<
 
 #ifndef HAVE_IMLIB2
@@ -182,7 +182,7 @@ static void showInfo(ostream &ostr) {
 #endif // SHAPE
         "SHAPE" << endl <<
 
-#ifndef SLIT
+#ifndef USE_SLIT
         NOT <<
 #endif // SLIT
         "SLIT" << endl <<