From 2da17132004a2ef288bd8ebda5c2ffabd4e4d771 Mon Sep 17 00:00:00 2001
From: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com>
Date: Tue, 5 Jul 2022 18:10:35 +0900
Subject: [PATCH 1/3] Define BUILDING_NGHTTP2 for tests to make linker work

---
 tests/Makefile.am | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tests/Makefile.am b/tests/Makefile.am
index 8806d127..162e082e 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -78,6 +78,7 @@ AM_CFLAGS = $(WARNCFLAGS) \
 	-I${top_srcdir}/lib \
 	-I${top_srcdir}/lib/includes \
 	-I${top_builddir}/lib/includes \
+	-DBUILDING_NGHTTP2 \
 	@CUNIT_CFLAGS@ @DEFS@
 
 TESTS = main

From 9a16e73813d21182f85a7b0aaaa696ff692ed6f6 Mon Sep 17 00:00:00 2001
From: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com>
Date: Tue, 5 Jul 2022 18:10:57 +0900
Subject: [PATCH 2/3] Compile with mingw64

---
 lib/nghttp2_net.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/nghttp2_net.h b/lib/nghttp2_net.h
index 582099b9..345f6c83 100644
--- a/lib/nghttp2_net.h
+++ b/lib/nghttp2_net.h
@@ -53,7 +53,7 @@
 STIN uint32_t htonl(uint32_t hostlong) {
   uint32_t res;
   unsigned char *p = (unsigned char *)&res;
-  *p++ = hostlong >> 24;
+  *p++ = (unsigned char)(hostlong >> 24);
   *p++ = (hostlong >> 16) & 0xffu;
   *p++ = (hostlong >> 8) & 0xffu;
   *p = hostlong & 0xffu;
@@ -63,7 +63,7 @@ STIN uint32_t htonl(uint32_t hostlong) {
 STIN uint16_t htons(uint16_t hostshort) {
   uint16_t res;
   unsigned char *p = (unsigned char *)&res;
-  *p++ = hostshort >> 8;
+  *p++ = (unsigned char)(hostshort >> 8);
   *p = hostshort & 0xffu;
   return res;
 }

From 83ea8e5ba56486762b217592b59a614b192f0396 Mon Sep 17 00:00:00 2001
From: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com>
Date: Tue, 5 Jul 2022 18:14:22 +0900
Subject: [PATCH 3/3] Add build-cross

---
 .github/workflows/build.yml | 44 +++++++++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)

diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 3e1e7669..e99f0f7a 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -229,6 +229,50 @@ jobs:
         cd $NGHTTP2_CMAKE_DIR/integration-tests
         make itprep it
 
+  build-cross:
+    strategy:
+      matrix:
+        host: [x86_64-w64-mingw32, i686-w64-mingw32]
+
+    runs-on: ubuntu-22.04
+
+    env:
+      HOST: ${{ matrix.host }}
+
+    steps:
+    - uses: actions/checkout@v3
+    - name: Linux setup
+      run: |
+        sudo dpkg --add-architecture i386
+        sudo apt-get update
+        sudo apt-get install \
+          gcc-mingw-w64 \
+          autoconf \
+          automake \
+          autotools-dev \
+          libtool \
+          pkg-config \
+          wine
+    - name: Build CUnit
+      run: |
+        curl -LO https://jaist.dl.sourceforge.net/project/cunit/CUnit/2.1-3/CUnit-2.1-3.tar.bz2
+        tar xf CUnit-2.1-3.tar.bz2
+        cd CUnit-2.1-3
+        ./bootstrap
+        ./configure --disable-shared --host="$HOST" --prefix="$PWD/build"
+        make -j$(nproc) install
+    - name: Configure autotools
+      run: |
+        autoreconf -i && \
+        ./configure --enable-werror --enable-lib-only --with-cunit \
+          --host="$HOST" PKG_CONFIG_PATH="$PWD/CUnit-2.1-3/build/lib/pkgconfig"
+    - name: Build nghttp2
+      run: |
+        make -j$(nproc)
+        make -j$(nproc) check TESTS=""
+        cd tests
+        wine main.exe
+
   build-windows:
     runs-on: windows-latest