From 3f92377c674da6c23916530ff58eb79c67c46861 Mon Sep 17 00:00:00 2001
From: Timotej Lazar <timotej.lazar@araneo.si>
Date: Tue, 27 Dec 2022 21:00:06 +0100
Subject: Use pkg-config to find libraries

---
 CMakeLists.txt | 67 ++++++++++++++++++++++++++--------------------------------
 1 file changed, 30 insertions(+), 37 deletions(-)

(limited to 'CMakeLists.txt')

diff --git a/CMakeLists.txt b/CMakeLists.txt
index d3d89e8..78ce3ae 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -43,12 +43,17 @@ ENDIF(AVP_WEB)
 
 # required dependencies
 IF(NOT AVP_WEB)
-    INCLUDE(FindOpenGLES2.cmake)
-    INCLUDE(FindSDL2.cmake)
-    INCLUDE(FindLibAV.cmake)
-    INCLUDE(FindSDL)
-    INCLUDE(FindOpenGL)
-    INCLUDE(FindOpenAL)
+    find_package(PkgConfig REQUIRED)
+    pkg_check_modules(LIBAVCODEC REQUIRED libavcodec)
+    pkg_check_modules(LIBAVFORMAT REQUIRED libavformat)
+    pkg_check_modules(LIBAVUTIL REQUIRED libavutil)
+    pkg_check_modules(LIBSWSCALE REQUIRED libswscale)
+    pkg_check_modules(OPENAL REQUIRED openal)
+    pkg_check_modules(EGL egl)
+    pkg_check_modules(OPENGL gl)
+    pkg_check_modules(OPENGLES2 glesv2)
+    pkg_check_modules(SDL sdl>=1.2)
+    pkg_check_modules(SDL2 sdl2)
 
     # Use SDL 1.2 if it is installed, else use SDL 2.0.
     IF(NOT SDL_TYPE)
@@ -60,18 +65,6 @@ IF(NOT AVP_WEB)
         MESSAGE(FATAL_ERROR "Invalid SDL_TYPE setting ${SDL_TYPE}; must be one of AUTO SDL SDL2")
     ENDIF(NOT SDL_TYPE STREQUAL "AUTO" AND NOT SDL_TYPE STREQUAL "SDL" AND NOT SDL_TYPE STREQUAL "SDL2")
 
-    IF(SDL_FOUND)
-        IF(SDL_VERSION_STRING VERSION_LESS "1.2.0")
-            MESSAGE(WARNING "SDL 1.2 was claimed to be found with version ${SDL_VERSION_STRING}, ignoring...")
-            UNSET(SDL_FOUND)
-        ENDIF(SDL_VERSION_STRING VERSION_LESS "1.2.0")
-
-        IF(SDL_VERSION_STRING VERSION_GREATER "1.2.99")
-            MESSAGE(WARNING "SDL 1.2 was claimed to be found with version ${SDL_VERSION_STRING}, ignoring...")
-            UNSET(SDL_FOUND)
-        ENDIF(SDL_VERSION_STRING VERSION_GREATER "1.2.99")
-    ENDIF(SDL_FOUND)
-
     IF(SDL_TYPE STREQUAL "AUTO")
         IF(SDL_FOUND)
             MESSAGE(STATUS "SDL 1.2 found; using that.")
@@ -145,11 +138,6 @@ IF(NOT AVP_WEB)
             MESSAGE(FATAL_ERROR "OpenGL ES 2.0 support requires SDL2.")
         ENDIF(NOT SDL_TYPE STREQUAL "SDL2")
     ENDIF(OPENGL_TYPE STREQUAL "OPENGLES2")
-
-    # OpenAL
-    IF(NOT OPENAL_FOUND)
-        MESSAGE(FATAL_ERROR "OpenAL is required but CMake couldn't find it.")
-    ENDIF(NOT OPENAL_FOUND)
 ENDIF(NOT AVP_WEB)
 
 # required source files
@@ -429,46 +417,51 @@ IF(NOT AVP_WEB)
     ENDIF(WIN32)
 
     IF(SDL_TYPE STREQUAL "SDL")
-        INCLUDE_DIRECTORIES(${SDL_INCLUDE_DIR})
+        INCLUDE_DIRECTORIES(${SDL_INCLUDE_DIRS})
     ENDIF(SDL_TYPE STREQUAL "SDL")
 
     IF(SDL_TYPE STREQUAL "SDL2")
-        INCLUDE_DIRECTORIES(${SDL2_INCLUDE_DIR})
+        INCLUDE_DIRECTORIES(${SDL2_INCLUDE_DIRS})
     ENDIF(SDL_TYPE STREQUAL "SDL2")
 
     IF(OPENGL_TYPE STREQUAL "OPENGL")
-        INCLUDE_DIRECTORIES(${OPENGL_INCLUDE_DIR})
+        INCLUDE_DIRECTORIES(${OPENGL_INCLUDE_DIRS})
     ENDIF(OPENGL_TYPE STREQUAL "OPENGL")
 
     IF(OPENGL_TYPE STREQUAL "OPENGLES2")
         ADD_DEFINITIONS(-DUSE_OPENGL_ES=1)
-        INCLUDE_DIRECTORIES(${OPENGLES2_INCLUDE_DIR})
-        INCLUDE_DIRECTORIES(${EGL_INCLUDE_DIR})
+        INCLUDE_DIRECTORIES(${OPENGLES2_INCLUDE_DIRS})
+        INCLUDE_DIRECTORIES(${EGL_INCLUDE_DIRS})
     ENDIF(OPENGL_TYPE STREQUAL "OPENGLES2")
 
-    INCLUDE_DIRECTORIES(${OPENAL_INCLUDE_DIR})
+    INCLUDE_DIRECTORIES(${LIBAVCODEC_INCLUDE_DIRS})
+    INCLUDE_DIRECTORIES(${LIBAVFORMAT_INCLUDE_DIRS})
+    INCLUDE_DIRECTORIES(${LIBAVUTIL_INCLUDE_DIRS})
+    INCLUDE_DIRECTORIES(${LIBSWSCALE_INCLUDE_DIRS})
+    INCLUDE_DIRECTORIES(${OPENAL_INCLUDE_DIRS})
 
     IF(SDL_TYPE STREQUAL "SDL")
-        TARGET_LINK_LIBRARIES(avp ${SDL_LIBRARY})
+        TARGET_LINK_LIBRARIES(avp ${SDL_LIBRARIES})
     ENDIF(SDL_TYPE STREQUAL "SDL")
 
     IF(SDL_TYPE STREQUAL "SDL2")
-        TARGET_LINK_LIBRARIES(avp ${SDL2_LIBRARY})
+        TARGET_LINK_LIBRARIES(avp ${SDL2_LIBRARIES})
     ENDIF(SDL_TYPE STREQUAL "SDL2")
 
     IF(OPENGL_TYPE STREQUAL "OPENGL")
-        TARGET_LINK_LIBRARIES(avp ${OPENGL_gl_LIBRARY})
+        TARGET_LINK_LIBRARIES(avp ${OPENGL_LIBRARIES})
     ENDIF(OPENGL_TYPE STREQUAL "OPENGL")
 
     IF(OPENGL_TYPE STREQUAL "OPENGLES2")
-        TARGET_LINK_LIBRARIES(avp ${OPENGLES2_gl_LIBRARY})
+        TARGET_LINK_LIBRARIES(avp ${OPENGLES2_LIBRARIES})
         TARGET_LINK_LIBRARIES(avp ${EGL_LIBRARIES})
     ENDIF(OPENGL_TYPE STREQUAL "OPENGLES2")
 
-    TARGET_LINK_LIBRARIES(avp ${OPENAL_LIBRARY})
-    TARGET_LINK_LIBRARIES(avp ${LIBAV_LIBRARIES})
-    TARGET_LINK_LIBRARIES(avp ${SWSCALE_LIBRARIES})
-    TARGET_LINK_LIBRARIES(avp ${AVCODEC_LIBRARIES})
+    TARGET_LINK_LIBRARIES(avp ${LIBAVCODEC_LIBRARIES})
+    TARGET_LINK_LIBRARIES(avp ${LIBAVFORMAT_LIBRARIES})
+    TARGET_LINK_LIBRARIES(avp ${LIBAVUTIL_LIBRARIES})
+    TARGET_LINK_LIBRARIES(avp ${LIBSWSCALE_LIBRARIES})
+    TARGET_LINK_LIBRARIES(avp ${OPENAL_LIBRARIES})
 
 
 
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