From 6b045c3ba8be63fbb3cd8dc026e984184696730c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=85dne=20Hovda?= <ahovda@openit.com>
Date: Tue, 18 Nov 2014 21:47:02 +0100
Subject: [PATCH] ccmake: Add CMAKE_USE_SYSTEM_FORM option to use libform
 instead of cmForm

---
 CMakeLists.txt                     |  9 +++++++--
 Source/CursesDialog/CMakeLists.txt | 18 +++++++++++++++---
 Utilities/cmThirdParty.h.in        |  1 +
 3 files changed, 23 insertions(+), 5 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 58e0a1f22..ba7f129fb 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -57,7 +57,7 @@ macro(CMAKE_HANDLE_SYSTEM_LIBRARIES)
 
   # Allow the user to enable/disable all system utility library options by
   # defining CMAKE_USE_SYSTEM_LIBRARIES or CMAKE_USE_SYSTEM_LIBRARY_${util}.
-  set(UTILITIES BZIP2 CURL EXPAT LIBARCHIVE LIBLZMA ZLIB)
+  set(UTILITIES BZIP2 CURL EXPAT FORM LIBARCHIVE LIBLZMA ZLIB)
   foreach(util ${UTILITIES})
     if(NOT DEFINED CMAKE_USE_SYSTEM_LIBRARY_${util}
         AND DEFINED CMAKE_USE_SYSTEM_LIBRARIES)
@@ -95,6 +95,7 @@ macro(CMAKE_HANDLE_SYSTEM_LIBRARIES)
     "${CMAKE_USE_SYSTEM_LIBRARY_BZIP2}" "NOT CMAKE_USE_SYSTEM_LIBARCHIVE" ON)
   CMAKE_DEPENDENT_OPTION(CMAKE_USE_SYSTEM_LIBLZMA "Use system-installed liblzma"
     "${CMAKE_USE_SYSTEM_LIBRARY_LIBLZMA}" "NOT CMAKE_USE_SYSTEM_LIBARCHIVE" ON)
+  option(CMAKE_USE_SYSTEM_FORM "Use system-installed libform" "${CMAKE_USE_SYSTEM_LIBRARY_FORM}")
 
   # Mention to the user what system libraries are being used.
   foreach(util ${UTILITIES})
@@ -394,7 +395,11 @@ macro (CMAKE_BUILD_UTILITIES)
     set(BUILD_CursesDialog 0)
   endif ()
   if(BUILD_CursesDialog)
-    add_subdirectory(Source/CursesDialog/form)
+    if(NOT CMAKE_USE_SYSTEM_FORM)
+      add_subdirectory(Source/CursesDialog/form)
+    elseif(NOT CURSES_FORM_LIBRARY)
+      message( FATAL_ERROR "CMAKE_USE_SYSTEM_FORM in ON but CURSES_FORM_LIBRARY is not set!" )
+    endif()
   endif()
 endmacro ()
 
diff --git a/Source/CursesDialog/CMakeLists.txt b/Source/CursesDialog/CMakeLists.txt
index 548f5a5fe..7d4e88cdc 100644
--- a/Source/CursesDialog/CMakeLists.txt
+++ b/Source/CursesDialog/CMakeLists.txt
@@ -26,13 +26,25 @@ set( CURSES_SRCS
               CursesDialog/ccmake
    )
 
-include_directories(${CMake_SOURCE_DIR}/Source/CursesDialog/form
-                    ${CMake_BINARY_DIR}/Source/CursesDialog/form)
+if( NOT CMAKE_USE_SYSTEM_FORM )
+  include_directories(${CMake_SOURCE_DIR}/Source/CursesDialog/form
+                      ${CMake_BINARY_DIR}/Source/CursesDialog/form)
+endif()
 include_directories(${CURSES_INCLUDE_PATH})
 
 
 add_executable(ccmake ${CURSES_SRCS} )
 target_link_libraries(ccmake CMakeLib)
-target_link_libraries(ccmake cmForm)
+if(CMAKE_USE_SYSTEM_FORM)
+  target_link_libraries(ccmake
+    ${CURSES_FORM_LIBRARY}
+    ${CURSES_LIBRARY}
+  )
+  if(CURSES_EXTRA_LIBRARY)
+    target_link_libraries(ccmake ${CURSES_EXTRA_LIBRARY})
+  endif()
+else()
+  target_link_libraries(ccmake cmForm)
+endif()
 
 install(TARGETS ccmake DESTINATION bin)
diff --git a/Utilities/cmThirdParty.h.in b/Utilities/cmThirdParty.h.in
index b0b577922..726c843c0 100644
--- a/Utilities/cmThirdParty.h.in
+++ b/Utilities/cmThirdParty.h.in
@@ -19,6 +19,7 @@
 #cmakedefine CMAKE_USE_SYSTEM_BZIP2
 #cmakedefine CMAKE_USE_SYSTEM_LIBARCHIVE
 #cmakedefine CMAKE_USE_SYSTEM_LIBLZMA
+#cmakedefine CMAKE_USE_SYSTEM_FORM
 #cmakedefine CTEST_USE_XMLRPC
 
 #endif