From 5df5daf78e135e0c8371012ffe56df5cae357755 Mon Sep 17 00:00:00 2001
From: Albrecht Schlosser <albrechts.fltk@online.de>
Date: Wed, 20 Dec 2023 16:56:29 +0100
Subject: Make the 'Forms' compatibility library 'fltk_forms' optional

This library is no longer needed in FLTK itself. There is only one
demo program (test/forms.cxx) that uses it if it is built. The demo
program displays a message if fltk_forms is not available.

The default is 'enabled' for backwards compatibility but this may
be changed to 'disabled' in a future version.
---
 src/CMakeLists.txt | 32 ++++++++++++++++++++------------
 1 file changed, 20 insertions(+), 12 deletions(-)

(limited to 'src/CMakeLists.txt')

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index be2634d62..47d576ac3 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -406,14 +406,18 @@ set (CPPFILES
   ${DRIVER_FILES}
 )
 
-set (FORMS_FILES
-  forms_compatibility.cxx
-  forms_bitmap.cxx
-  forms_free.cxx
-  forms_fselect.cxx
-  forms_pixmap.cxx
-  forms_timer.cxx
-)
+if (FLTK_BUILD_FORMS)
+  set (FORMS_FILES
+    forms_compatibility.cxx
+    forms_bitmap.cxx
+    forms_free.cxx
+    forms_fselect.cxx
+    forms_pixmap.cxx
+    forms_timer.cxx
+  )
+else ()
+  set (FORMS_FILES "")
+endif ()
 
 set (GLCPPFILES
   Fl_Gl_Choice.cxx
@@ -759,8 +763,10 @@ endif()
 
 #######################################################################
 
-FL_ADD_LIBRARY (fltk_forms STATIC "${FORMS_FILES}")
-target_link_libraries (fltk_forms fltk)
+if (FLTK_BUILD_FORMS)
+  FL_ADD_LIBRARY (fltk_forms STATIC "${FORMS_FILES}")
+  target_link_libraries (fltk_forms fltk)
+endif ()
 
 #######################################################################
 
@@ -806,8 +812,10 @@ if (OPTION_BUILD_SHARED_LIBS AND NOT MSVC)
 
   ###################################################################
 
-  FL_ADD_LIBRARY (fltk_forms SHARED "${FORMS_FILES}")
-  target_link_libraries (fltk_forms_SHARED fltk_SHARED)
+  if (FLTK_BUILD_FORMS)
+    FL_ADD_LIBRARY (fltk_forms SHARED "${FORMS_FILES}")
+    target_link_libraries (fltk_forms_SHARED fltk_SHARED)
+  endif ()
 
   ###################################################################
 
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