From bf3ad3f9e4d1fda68c30ca1c9a9c538390e43010 Mon Sep 17 00:00:00 2001
From: Xavier Del Campo Romero <xavi.dcr@tutanota.com>
Date: Mon, 6 Jun 2022 21:51:44 +0200
Subject: [PATCH] CMakeLists.txt: build host tools as ExternalProject

---
 CMakeLists.txt       | 7 +++++++
 res/CMakeLists.txt   | 9 ++++++---
 tools/CMakeLists.txt | 1 +
 3 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 23f26a5..fb20912 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -18,6 +18,13 @@ elseif(WIN9X_BUILD)
     include("cmake/win9x-toolchain.cmake")
 endif()
 
+set(TOOLS_PREFIX ${CMAKE_BINARY_DIR}/tools)
+include(ExternalProject)
+ExternalProject_Add(tools
+    SOURCE_DIR ${CMAKE_SOURCE_DIR}/tools
+    CMAKE_ARGS
+        -D CMAKE_INSTALL_PREFIX=${TOOLS_PREFIX})
+
 project(rts)
 
 add_executable(${PROJECT_NAME} "src/main.c")
diff --git a/res/CMakeLists.txt b/res/CMakeLists.txt
index 5ecf3c5..2b8b00c 100644
--- a/res/CMakeLists.txt
+++ b/res/CMakeLists.txt
@@ -29,12 +29,13 @@ function(sprite)
         endif()
 
         add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${SPRITE_NAME}
-            COMMAND add-header ${trans} ${SPRITE_NAME}_24.bmp ${CMAKE_CURRENT_BINARY_DIR}/${SPRITE_NAME}
+            COMMAND ${TOOLS_PREFIX}/bin/add-header ${trans} ${SPRITE_NAME}_24.bmp ${CMAKE_CURRENT_BINARY_DIR}/${SPRITE_NAME}
             WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
             DEPENDS ${SPRITE_NAME}_24.bmp
             VERBATIM)
         add_custom_target(${SPRITE_NAME}_img
             DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${SPRITE_NAME})
+        add_dependencies(${SPRITE_NAME}_img tools)
     endif()
 endfunction()
 
@@ -66,12 +67,13 @@ function(sound)
 
         # Reference: https://gist.github.com/socantre/7ee63133a0a3a08f3990
         add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${SOUND_NAME}
-            COMMAND add-header ${loop} ${SOUND_NAME}.wav ${CMAKE_CURRENT_BINARY_DIR}/${SOUND_NAME}
+            COMMAND ${TOOLS_PREFIX}/bin/add-header ${loop} ${SOUND_NAME}.wav ${CMAKE_CURRENT_BINARY_DIR}/${SOUND_NAME}
             WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
             DEPENDS ${SOUND_NAME}.wav
             VERBATIM)
         add_custom_target(${SOUND_NAME}_snd
             DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${SOUND_NAME})
+        add_dependencies(${SOUND_NAME}_snd tools)
     endif()
 endfunction()
 
@@ -83,7 +85,7 @@ function(container)
         "${multiValueArgs}" ${ARGN})
 
     add_custom_command(OUTPUT ${cdroot}/${CONTAINER_NAME}.cnt
-        COMMAND container ${CONTAINER_SPRITES} ${CONTAINER_SOUNDS}
+        COMMAND ${TOOLS_PREFIX}/bin/container ${CONTAINER_SPRITES} ${CONTAINER_SOUNDS}
             ${cdroot}/${CONTAINER_NAME}.cnt
         WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
         VERBATIM)
@@ -91,6 +93,7 @@ function(container)
     add_custom_target(${CONTAINER_NAME}_container
         DEPENDS ${cdroot}/${CONTAINER_NAME}.cnt)
     add_dependencies(${PROJECT_NAME} ${CONTAINER_NAME}_container)
+    add_dependencies(${CONTAINER_NAME}_container tools)
 
     foreach(sprite ${CONTAINER_SPRITES})
         add_dependencies(${CONTAINER_NAME}_container ${sprite}_img)
diff --git a/tools/CMakeLists.txt b/tools/CMakeLists.txt
index 843301d..14d2b0e 100644
--- a/tools/CMakeLists.txt
+++ b/tools/CMakeLists.txt
@@ -5,3 +5,4 @@ add_executable(add-header "add-header.c")
 set(cflags -Wall -g3)
 target_compile_options(container PUBLIC ${cflags})
 target_compile_options(add-header PUBLIC ${cflags})
+install(TARGETS container add-header DESTINATION bin)