From d8fcc7232aeac05bb72dd9fe928d242979806da2 Mon Sep 17 00:00:00 2001
From: ehofman <ehofman>
Date: Sun, 24 Aug 2003 17:27:25 +0000
Subject: [PATCH] Don't bail out when not finding libnurbs++ but just don't
 create genairport and end with a warning

---
 configure.ac             | 19 +++++++++----------
 src/Airports/Makefile.am |  8 +++++++-
 2 files changed, 16 insertions(+), 11 deletions(-)

diff --git a/configure.ac b/configure.ac
index cc3d8df4..46011a80 100644
--- a/configure.ac
+++ b/configure.ac
@@ -223,16 +223,7 @@ fi
 
 dnl Check for "libnurbs++" without which we cannot go on
 AC_CHECK_HEADER(nurbs++/nurbsS.h)
-if test "x$ac_cv_header_nurbspp_nurbsS_h" != "xyes"; then
-    echo
-    echo "You *must* have the nurbs++ library installed on your system to build"
-    echo "TerraGear!"
-    echo
-    echo "Please see README.nurbs++ for more details."
-    echo
-    echo "configure aborted."
-    exit
-fi
+AM_CONDITIONAL(HAVE_NURBS, test "x$ac_cv_header_nurbspp_nurbsS_h" = "xyes" )
 AC_LANG_POP
 
 dnl Check if Generic Polygon Clipping library is installed
@@ -411,3 +402,11 @@ else
     echo "Debug messages: yes"
 fi
 
+if test "x$ac_cv_header_nurbspp_nurbsS_h" != "xyes"; then
+    echo
+    echo "You *must* have the nurbs++ library installed on your system to build"
+    echo "TerraGears GenAirport utility!"
+    echo
+    echo "Please see README.nurbs++ for more details."
+    echo
+fi
diff --git a/src/Airports/Makefile.am b/src/Airports/Makefile.am
index 999705c5..4b252be3 100644
--- a/src/Airports/Makefile.am
+++ b/src/Airports/Makefile.am
@@ -1 +1,7 @@
-SUBDIRS = GenAirports
+if HAVE_NURBS
+GEN_AIRPORTS_DIR = GenAirports
+else
+GEN_AIRPORTS_DIR =
+fi
+
+SUBDIRS = $(GEN_AIRPORTS_DIR)