build: add MSYS2 PKGBUILD script to build

Author: Richard Pospesel

.github/workflows/build.yml

@@ -79,7 +79,7 @@ jobs:
           export PATH=$(cygpath -u ${JAVA_HOME})/bin:$PATH
           mkdir -p build/debug
           cd build/debug
-          cmake ../.. -G "Unix Makefiles"  -DCMAKE_BUILD_TYPE=Debug -DCMAKE_INSTALL_PREFIX=../../dist/debug -DBUILD_PYTHON_BINDINGS=ON -DBUILD_JAVA_BINDINGS=ON -DBUILD_EXAMPLES=ON
+          cmake ../.. -G "Unix Makefiles"  -DCMAKE_BUILD_TYPE=Debug -DCMAKE_INSTALL_PREFIX=../../dist/debug -DBUILD_PYTHON_BINDINGS=ON -DBUILD_JAVA_BINDINGS=ON -DBUILD_EXAMPLES=ON -DBUILD_MSYS2_PKGBUILD=ON
           make
           make install
       - name: Archive Debug
@@ -97,7 +97,7 @@ jobs:
           export PATH=$(cygpath -u ${JAVA_HOME})/bin:$PATH
           mkdir -p build/release
           cd build/release
-          cmake ../.. -G "Unix Makefiles"  -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=../../dist/release -DBUILD_PYTHON_BINDINGS=ON -DBUILD_JAVA_BINDINGS=ON -DBUILD_EXAMPLES=ON
+          cmake ../.. -G "Unix Makefiles"  -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=../../dist/release -DBUILD_PYTHON_BINDINGS=ON -DBUILD_JAVA_BINDINGS=ON -DBUILD_EXAMPLES=ON -DBUILD_MSYS2_PKGBUILD=ON
           make
           make install
       - name: Archive Release

CMakeLists.txt

@@ -77,6 +77,7 @@ option(BUILD_EXAMPLES "Build example targets" OFF)
 # Packages options
 option(BUILD_DEBIAN_SOURCE_PACKAGE "Build debian cgosling source package" OFF)
 option(BUILD_HOMEBREW_FORMULA "Build homebrew flask formula" OFF)
+option(BUILD_MSYS2_PKGBUILD "Build msys2 pkgbuild script" OFF)
 
 # Documentation options
 option(BUILD_PAGES "Build webpages" OFF)

source/packages/CMakeLists.txt

@@ -1,2 +1,3 @@
 add_subdirectory(debian-source)
 add_subdirectory(homebrew-formula)
+add_subdirectory(msys2-pkgbuild)

source/packages/msys2-pkgbuild/CMakeLists.txt

@@ -0,0 +1,9 @@
+if (BUILD_MSYS2_PKGBUILD)
+    # generate msys2 PKGBUILD build script
+    set(PKGBUILD_IN ${CMAKE_CURRENT_SOURCE_DIR}/PKGBUILD.in)
+    set(PKGBUILD_OUT ${CMAKE_CURRENT_BINARY_DIR}/PKGBUILD)
+    configure_file(${PKGBUILD_IN} ${PKGBUILD_OUT} @ONLY)
+
+    install(FILES ${PKGBUILD_OUT}
+        DESTINATION ${CMAKE_INSTALL_DATADIR}/gosling/packages/msys2-pkgbuild)
+endif()

source/packages/msys2-pkgbuild/PKGBUILD.in

@@ -0,0 +1,42 @@
+# Maintainer: Richard Pospesel <richard@blueprintforfreespeech.net>
+
+_realname=libcgosling
+pkgbase=mingw-w64-${_realname}
+pkgname="${MINGW_PACKAGE_PREFIX}-${_realname}"
+pkgver=0.2.2
+pkgrel=1
+pkgdesc="C bindings for Gosling crate"
+arch=('any')
+mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clang32' 'clangarm64')
+url=https://github.com/blueprint-freespeech/gosling
+license=('BSD-3-Clause')
+source=("git+https://github.com/blueprint-freespeech/gosling?signed#tag=cgosling-v$@CGOSLING_VERSION@")
+sha256sums=('SKIP')
+validpgpkeys=(
+    'BE7C914CC922CED9D93D23B7DE47360363F34B2C' # Richard Pospesel <richard@blueprintforfreespeech.net>
+)
+makedepends=(
+    "git"
+    "make"
+    "${MINGW_PACKAGE_PREFIX}-cmake"
+    "${MINGW_PACKAGE_PREFIX}-rust"
+    "${MINGW_PACKAGE_PREFIX}-clang"
+)
+optdepends=("${MINGW_PACKAGE_PREFIX}-tor")
+
+build() {
+  ${MINGW_PREFIX}/bin/cmake \
+    -G "Unix Makefiles" \
+    -S "${srcdir}/gosling" \
+    -B "${srcdir}/build-${MSYSTEM}" \
+    -DCMAKE_C_COMPILER="clang" \
+    -DCMAKE_CXX_COMPILER="clang++" \
+    -DCMAKE_INSTALL_PREFIX=${MINGW_PREFIX} \
+    -DCMAKE_BUILD_TYPE=Release \
+
+  ${MINGW_PREFIX}/bin/cmake --build "${srcdir}/build-${MSYSTEM}"
+}
+
+package() {
+  ${MINGW_PREFIX}/bin/cmake --install "${srcdir}/build-${MSYSTEM}"
+}

source/packages/msys2-pkgbuild/README.md

@@ -0,0 +1,10 @@
+# msys2-pkgbuild
+
+This buillds an [MSYS2](https://www.msys2.org/) PKGBUILD script for the cgosling crate which can be used to build and install the libcgosling shared libs, static libs, and development headers.
+
+## Building PKGBUILD script
+
+```bash
+cd /path/to/libcgosling/PKGBUILD
+makepkg
+```