+dnl **************
+dnl *** Btls ***
+dnl **************
+
+AC_ARG_ENABLE(btls, [ --disable-btls Disable the BoringTls provider], enable_btls=$enableval, enable_btls=$BTLS_SUPPORTED)
+AC_ARG_WITH(btls_android_ndk, [ --with-btls-android-ndk Android NDK for BoringTls])
+
+AC_ARG_ENABLE(dynamic-btls, [ --enable-dynamic-btls Place the BTLS provider into a separate shared library/archive.], enable_dynamic_btls=$enableval, enable_dynamic_btls=no)
+
+AM_CONDITIONAL(BTLS, test x$enable_btls = xyes)
+AM_CONDITIONAL(DYNAMIC_BTLS, test x$enable_dynamic_btls = xyes)
+
+btls_android=no
+if test "x$enable_btls" = "xyes"; then
+ AC_PATH_PROG(CMAKE, [cmake], [no], [$PATH:/Applications/CMake.app/Contents/bin:/usr/local/bin])
+ if test "x$CMAKE" = "xno"; then
+ AC_MSG_ERROR("cmake not found")
+ fi
+
+ BTLS_ROOT=`cd $srcdir && pwd`/external/boringssl
+ AC_SUBST(BTLS_ROOT)
+
+ btls_arch=
+ btls_cflags=
+ BTLS_CMAKE_ARGS=
+
+ case "$BTLS_PLATFORM" in
+ i386)
+ btls_arch=i386
+ btls_cflags="-m32"
+ case $host_os in
+ darwin*)
+ btls_cflags="$btls_cflags -arch i386"
+ esac
+ ;;
+ x86_64)
+ btls_arch=x86_64
+ ;;
+ android-armv5)
+ BTLS_CMAKE_ARGS="-DANDROID_ABI=\"armeabi\" -DANDROID_NATIVE_API_LEVEL=12"
+ ;;
+ android-armv6)
+ BTLS_CMAKE_ARGS="-DANDROID_ABI=\"armeabi\" -DANDROID_NATIVE_API_LEVEL=12"
+ ;;
+ android-armv7)
+ BTLS_CMAKE_ARGS="-DANDROID_ABI=\"armeabi-v7a\" -DANDROID_NATIVE_API_LEVEL=12"
+ ;;
+ android-v8a)
+ BTLS_CMAKE_ARGS="-DANDROID_ABI=\"arm64-v8a\" -DANDROID_NATIVE_API_LEVEL=12"
+ ;;
+ android-x86)
+ BTLS_CMAKE_ARGS="-DANDROID_ABI=\"x86\" -DANDROID_NATIVE_API_LEVEL=12"
+ ;;
+ android-x64)
+ BTLS_CMAKE_ARGS="-DANDROID_ABI=\"x86_64\" -DANDROID_NATIVE_API_LEVEL=12"
+ ;;
+ *)
+ AC_MSG_ERROR(Invalid BTLS platform)
+ esac
+
+ if test "x$platform_android" = "xyes"; then
+ btls_android=yes
+ BTLS_CMAKE_ARGS="$BTLS_CMAKE_ARGS -DCMAKE_TOOLCHAIN_FILE=$BTLS_ROOT/util/android-cmake/android.toolchain.cmake"
+ if test "x$with_btls_android_ndk" != "x"; then
+ BTLS_CMAKE_ARGS="$BTLS_CMAKE_ARGS -DANDROID_NDK=\"$with_btls_android_ndk\""
+ fi
+ fi
+
+ if test "x$btls_arch" != "x"; then
+ BTLS_CMAKE_ARGS="$BTLS_CMAKE_ARGS -DBTLS_ARCH=\"$btls_arch\""
+ fi
+
+ BTLS_CFLAGS="$CPPFLAGS_FOR_BTLS $btls_cflags"
+ AC_SUBST(BTLS_ARCH)
+ AC_SUBST(BTLS_CFLAGS)
+ AC_SUBST(BTLS_PLATFORM)
+ AC_SUBST(BTLS_CMAKE_ARGS)
+
+ AC_DEFINE(HAVE_BTLS, 1, [BoringTls is supported])
+
+ if test "x$enable_dynamic_btls" = "xyes"; then
+ AC_DEFINE(HAVE_DYNAMIC_BTLS, 1, [BTLS in a shared libraty])
+ fi
+else
+ enable_btls=no
+fi
+
+AM_CONDITIONAL(BTLS_ANDROID, test x$btls_android = xyes)
+