Add libthai and libiconv rules (#15)

Co-authored-by: Rocka <i@rocka.me>

.github/workflows/ci.yml

@@ -20,7 +20,7 @@ jobs:
         run: |
           pacman -Syu --needed --noconfirm \
             git unzip ghc cabal-install haskell-shake haskell-aeson-pretty \
-            cmake extra-cmake-modules ninja fmt fcitx5 boost python opencc jre-openjdk
+            cmake extra-cmake-modules ninja fmt fcitx5 boost python opencc jre-openjdk gperf
 
       - name: Fetch source code
         uses: actions/checkout@v4

.gitmodules

@@ -60,3 +60,9 @@
 [submodule "librime-predict"]
 	path = librime-predict
 	url = https://github.com/rime/librime-predict
+[submodule "libthai"]
+	path = libthai
+	url = https://github.com/tlwg/libthai
+[submodule "libiconv"]
+	path = libiconv
+	url = https://git.savannah.gnu.org/git/libiconv

README.md

@@ -34,3 +34,5 @@ Cabal is required to build this project.
 * librime-octagram: [rime/librime-octagram](https://github.com/lotem/librime-octagram)
 * libhangul: [libhangul/libhangul](https://github.com/libhangul/libhangul)
 * libchewing: [chewing/libchewing](https://github.com/chewing/libchewing)
+* libthai: [tlwg/libthai](https://github.com/tlwg/libthai)
+* libiconv: [GNU/libiconv](https://savannah.gnu.org/projects/libiconv)

patches/libiconv/CMakeLists.txt

@@ -0,0 +1,15 @@
+cmake_minimum_required(VERSION 3.22.1)
+project(libiconv)
+
+set(LIBICONV_HEADER
+    "include/iconv.h"
+)
+set(LIBICONV_SOURCE
+    lib/iconv.c
+    libcharset/lib/localcharset.c
+)
+
+add_library(iconv STATIC ${LIBICONV_SOURCE})
+target_include_directories(iconv PRIVATE include libcharset/include)
+install(TARGETS iconv)
+install(FILES ${LIBICONV_HEADER} DESTINATION include)