Merge pull request #1 from Masaiki/master

add cmake build script

.gitignore

@@ -30,3 +30,5 @@
 *.exe
 *.out
 *.app
+
+/build

CMakeLists.txt

@@ -0,0 +1,31 @@
+cmake_minimum_required(VERSION 3.15) # for cmake policy CMP0091 https://cmake.org/cmake/help/latest/policy/CMP0091.html#policy:CMP0091
+project(subtext)
+
+set(CMAKE_C_STANDARD 11)
+set(CMAKE_CXX_STANDARD 14)
+set(CMAKE_C_VISIBILITY_PRESET hidden)
+
+include(FetchContent)
+FetchContent_Declare(VapourSynth
+    URL          https://github.com/vapoursynth/vapoursynth/archive/refs/tags/R55-API4-RC3.zip
+    URL_HASH MD5=2352CD4FD2DEEA88A9495279820AC2A0)
+FetchContent_MakeAvailable(VapourSynth)
+
+find_package(Iconv REQUIRED)
+find_package(PkgConfig REQUIRED)
+pkg_check_modules(LIBAV REQUIRED
+    libavcodec
+    libavformat
+    libavutil
+)
+pkg_check_modules(LIBASS REQUIRED libass>=0.12.0)
+
+add_library(subtext SHARED
+    "src/common.c"
+    "src/image.cpp"
+    "src/text.c"
+    "src/toass.cpp"
+    "src/toutf8.c"
+)
+target_include_directories(subtext PRIVATE "${vapoursynth_SOURCE_DIR}/include" ${LIBAV_INCLUDE_DIRS} ${LIBASS_INCLUDE_DIRS})
+target_link_libraries(subtext PRIVATE Iconv::Iconv ${LIBAV_LINK_LIBRARIES} ${LIBASS_LINK_LIBRARIES})