Fix compilation without precompiled headers

.github/workflows/cmake.yml

@@ -57,7 +57,7 @@ jobs:
       env:
         CC: clang
         CXX: clang++
-      run: cmake . -DCMAKE_BUILD_TYPE=$BUILD_TYPE -DCMAKE_CXX_FLAGS="-std=c++17"
+      run: cmake . -DCMAKE_BUILD_TYPE=$BUILD_TYPE -DTV_OPTIMIZE_BUILD=OFF
 
     - name: Build
       shell: bash

CMakeLists.txt

@@ -8,8 +8,10 @@
 # * TV_REDUCE_APP_SIZE (default OFF) to reduce executable size by asking the
 #   linker to strip out unused funcions and data. This affects the library's PUBLIC
 #   linker flags.
+# * TV_OPTIMIZE_BUILD (default ON) to build with Precompiled Headers (CMake 3.16
+#   or newer.
 # * TV_LIBRARY_UNITY_BUILD (default OFF) to reduce the build time of the main library
-#   (CMake 3.16 or newer).
+#   (CMake 3.16 or newer), at the cost of possibly increasing its size.
 # * TV_BUILD_AVSCOLOR (default OFF) to build an AviSynth plugin for testing the
 #   terminal color quantization (Unix only).
 
@@ -139,6 +141,12 @@ if ((CMAKE_VERSION VERSION_LESS "3.16.0") AND TV_LIBRARY_UNITY_BUILD)
     set(TV_LIBRARY_UNITY_BUILD OFF)
 endif()
 
+option(TV_OPTIMIZE_BUILD "Use CMake's Precompiled Headers" OFF)
+if ((CMAKE_VERSION VERSION_LESS "3.16.0") AND TV_OPTIMIZE_BUILD)
+    tv_message(WARNING "'TV_OPTIMIZE_BUILD' requested but only available in CMake 3.16.0 or newer.")
+    set(TV_OPTIMIZE_BUILD OFF)
+endif()
+
 option(TV_BUILD_AVSCOLOR "Build AviSynth TermColor plugin" OFF)
 
 tv_message_mp(STATUS "Install path: ${CMAKE_INSTALL_PREFIX}")

include/tvision/internal/platform.h

@@ -2,6 +2,7 @@
 #define PLATFORM_H
 
 #define Uses_TPoint
+#define Uses_TColorAttr
 #include <tvision/tv.h>
 #include <internal/stdioctl.h>
 #include <internal/buffdisp.h>

source/platform/stdioctl.cpp

@@ -1,3 +1,6 @@
+#define Uses_TPoint
+#include <tvision/tv.h>
+
 #include <internal/stdioctl.h>
 #include <internal/getenv.h>