fix: build issue

build-current.sh

@@ -1,3 +1,3 @@
 export OPENH264_OS=$(uname | tr A-Z a-z | tr -d \\-0-9. | sed -E 's/^(net|open|free)bsd/bsd/')
 
-CC=gcc CXX=g++ AR=ar bash build.sh
+CC=gcc CXX=g++ AR=ar bash build.sh $@

build-win.sh

@@ -0,0 +1,5 @@
+set -x
+
+export TOOLCHAIN=x86_64-w64-mingw32
+
+OPENH264_OS=mingw_nt OPENH264_ARCH=x86_64 CC=$TOOLCHAIN-gcc CXX=$TOOLCHAIN-g++ AR=$TOOLCHAIN-ar bash build.sh

scripts/build-ffmpeg.sh

@@ -14,7 +14,7 @@ make distclean
 
 flags="--cc=$CC --cxx=$CXX"
 
-if [[ -z $FFMPEG_MSVC ]]; then
+if [[ $FFMPEG_MSVC == 1 ]]; then
   flags="--toolchain=msvc"
 fi
 
@@ -23,8 +23,6 @@ fi
   --enable-libopenh264 \
   --prefix=$PREFIX --enable-cross-compile --arch=$ARCH \
   --pkg-config-flags="--static" --target-os=$FFMPEG_OS \
-  --extra-ldflags="-libpath:$PREFIX/lib" \
-  --extra-cflags="-I$PREFIX/include/mfx" \
   ${flags} ${FFBUILD_FLAGS}
 
 make -j$JOBS