[cmake] Disable tools by default but enable in CI

.appveyor.yml

@@ -62,7 +62,7 @@ build_script:
 
     cd build
 
-    cmake -DCMAKE_PREFIX_PATH=%Qt5_DIR% -DCMAKE_TOOLCHAIN_FILE=c:/tools/vcpkg/scripts/buildsystems/vcpkg.cmake -DENABLE_SPICE=ON ..
+    cmake -DCMAKE_PREFIX_PATH=%Qt5_DIR% -DCMAKE_TOOLCHAIN_FILE=c:/tools/vcpkg/scripts/buildsystems/vcpkg.cmake -DENABLE_SPICE=ON -DENABLE_TOOLS=ON ..
 
     cmake --build . --config Release -- /maxcpucount:4 /nologo
 

.travis.yml

@@ -34,7 +34,7 @@ before_script:
 - cd build
 
 script:
-- cmake -DENABLE_SPICE=ON ..
+- cmake -DENABLE_SPICE=ON -DENABLE_TOOLS=ON ..
 - make -j $(nproc || echo 4)
 
 addons:

CMakeLists.txt

@@ -28,6 +28,7 @@ option(ENABLE_GTK     "Build GTK2 frontend (Unix only)? (Default: off)" OFF)
 option(ENABLE_QT      "Build Qt frontend? (Default: on)" ON)
 option(ENABLE_WIN     "Build Windows native frontend? (Default: on)" ON)
 option(ENABLE_THEORA  "Support video capture to OGG Theora? (Default: on)" ON)
+option(ENABLE_TOOLS   "Build different tools? (Default: off)" OFF)
 option(NATIVE_OSX_APP "Support native OSX paths read data from (Default: off)" OFF)
 
 if(NOT CMAKE_BUILD_TYPE)

src/CMakeLists.txt

@@ -9,11 +9,14 @@ set(CELESTIA_LIBS
   celutil
 )
 
-foreach(lib ${CELESTIA_LIBS} tools)
+foreach(lib ${CELESTIA_LIBS})
   add_subdirectory(${lib})
 endforeach()
 
-if (NOT WIN32)
-  add_executable(buildstardb buildstardb.cpp)
-  cotire(buildstardb)
+if (ENABLE_TOOLS)
+  add_subdirectory(tools)
+  if (NOT WIN32)
+    add_executable(buildstardb buildstardb.cpp)
+    cotire(buildstardb)
+  endif()
 endif()