GCC 13: Disable UTF-8 manifest for i686 (#58)

The manifest is incompatible with Windows XP and prevents GCC's
executables from starting on that platform.

Author: skeeto

src/variant-i686.patch

@@ -1,37 +1,43 @@
 --- a/Dockerfile
 +++ b/Dockerfile
-@@ -62,3 +62,3 @@ COPY src/w64devkit.c src/w64devkit.ico \
+@@ -65,3 +65,3 @@ COPY src/w64devkit.c src/w64devkit.ico \
 
 -ARG ARCH=x86_64-w64-mingw32
 +ARG ARCH=i686-w64-mingw32
 
-@@ -87,2 +87,3 @@ RUN /mingw-w64-v$MINGW_VERSION/mingw-w64-headers/configure \
+@@ -92,2 +92,3 @@ RUN /mingw-w64-v$MINGW_VERSION/mingw-w64-headers/configure \
          --host=$ARCH \
 +        --with-default-win32-winnt=0x0501 \
   && make -j$(nproc) \
-@@ -100,2 +101,3 @@ RUN cat $PREFIX/src/gcc-*.patch | patch -d/gcc-$GCC_VERSION -p1 \
+@@ -98,2 +99,5 @@ RUN ln -s $ARCH mingw
+ 
++# Disable UTF-8 manifest for Windows XP (#58)
++RUN echo >/gcc-$GCC_VERSION/gcc/config/i386/winnt-utf8.manifest
++
+ WORKDIR /x-gcc
+@@ -103,2 +107,3 @@ RUN /gcc-$GCC_VERSION/configure \
          --target=$ARCH \
 +        --with-arch=pentium4 \
          --enable-static \
-@@ -127,4 +129,4 @@ RUN /mingw-w64-v$MINGW_VERSION/mingw-w64-crt/configure \
+@@ -130,4 +135,4 @@ RUN /mingw-w64-v$MINGW_VERSION/mingw-w64-crt/configure \
          --disable-dependency-tracking \
 -        --disable-lib32 \
 -        --enable-lib64 \
 +        --enable-lib32 \
 +        --disable-lib64 \
          CFLAGS="-Os" \
-@@ -211,2 +213,3 @@ RUN /mingw-w64-v$MINGW_VERSION/mingw-w64-headers/configure \
+@@ -214,2 +219,3 @@ RUN /mingw-w64-v$MINGW_VERSION/mingw-w64-headers/configure \
          --host=$ARCH \
 +        --with-default-win32-winnt=0x0501 \
   && make -j$(nproc) \
-@@ -220,4 +223,4 @@ RUN /mingw-w64-v$MINGW_VERSION/mingw-w64-crt/configure \
+@@ -223,4 +229,4 @@ RUN /mingw-w64-v$MINGW_VERSION/mingw-w64-crt/configure \
          --disable-dependency-tracking \
 -        --disable-lib32 \
 -        --enable-lib64 \
 +        --enable-lib32 \
 +        --disable-lib64 \
          CFLAGS="-Os" \
-@@ -246,2 +249,3 @@ RUN /gcc-$GCC_VERSION/configure \
+@@ -249,2 +255,3 @@ RUN /gcc-$GCC_VERSION/configure \
          --host=$ARCH \
 +        --with-arch=pentium4 \
          --enable-static \