commit e80a2734e847bdbbf060b52f86890b409b033710
Author:     ManoloFLTK <41016272+ManoloFLTK@users.noreply.github.com>
AuthorDate: Tue Jan 4 16:20:39 2022 +0100
Commit:     ManoloFLTK <41016272+ManoloFLTK@users.noreply.github.com>
CommitDate: Tue Jan 4 16:20:49 2022 +0100

    Fix build error with CMake when libjpeg???-dev package is absent from the system (Linux).
    
    The error was visible under Linux if OPTION_USE_SYSTEM_LIBJPEG and OPTION_BUILD_SHARED_LIBS are  on.

 src/CMakeLists.txt | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git src/CMakeLists.txt src/CMakeLists.txt
index 6a6178b..a86f5ce 100644
--- src/CMakeLists.txt
+++ src/CMakeLists.txt
@@ -571,11 +571,11 @@ target_link_libraries (fltk_forms fltk)
 FL_ADD_LIBRARY (fltk_images STATIC "${IMGCPPFILES}")
 target_link_libraries (fltk_images fltk)
 
-if (OPTION_USE_SYSTEM_LIBJPEG)
+if (NOT FLTK_USE_BUILTIN_JPEG)
   target_link_libraries (fltk_images ${FLTK_JPEG_LIBRARIES})
 else()
   target_link_libraries (fltk_images fltk_jpeg)
-endif (OPTION_USE_SYSTEM_LIBJPEG)
+endif (NOT FLTK_USE_BUILTIN_JPEG)
 
 if (OPTION_USE_SYSTEM_ZLIB)
   target_link_libraries (fltk_images ${FLTK_ZLIB_LIBRARIES})
@@ -617,11 +617,11 @@ if (OPTION_BUILD_SHARED_LIBS AND NOT MSVC)
   FL_ADD_LIBRARY (fltk_images SHARED "${IMGCPPFILES}")
   target_link_libraries (fltk_images_SHARED fltk_SHARED)
 
-  if (OPTION_USE_SYSTEM_LIBJPEG)
+  if (NOT FLTK_USE_BUILTIN_JPEG)
     target_link_libraries (fltk_images_SHARED ${FLTK_JPEG_LIBRARIES})
   else()
     target_link_libraries (fltk_images_SHARED fltk_jpeg_SHARED)
-  endif (OPTION_USE_SYSTEM_LIBJPEG)
+  endif (NOT FLTK_USE_BUILTIN_JPEG)
 
   if (OPTION_USE_SYSTEM_LIBPNG)
     target_link_libraries (fltk_images_SHARED ${FLTK_PNG_LIBRARIES})
@@ -663,11 +663,11 @@ if (OPTION_BUILD_SHARED_LIBS AND MSVC)
   FL_ADD_LIBRARY (fltk SHARED "${SOURCES}")
   target_link_libraries (fltk_SHARED ${OPTIONAL_LIBS})
 
-  if (OPTION_USE_SYSTEM_LIBJPEG)
+  if (NOT FLTK_USE_BUILTIN_JPEG)
     target_link_libraries (fltk_SHARED ${FLTK_JPEG_LIBRARIES})
   else()
     target_link_libraries (fltk_SHARED fltk_jpeg_SHARED)
-  endif (OPTION_USE_SYSTEM_LIBJPEG)
+  endif (NOT FLTK_USE_BUILTIN_JPEG)
 
   if (OPTION_USE_SYSTEM_LIBPNG)
     target_link_libraries (fltk_SHARED ${FLTK_PNG_LIBRARIES})