Merge pull request #1748 from nghttp2/cross-build

Cross build

.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
 

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;
 }

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