Don't use fat build for Windows on ARM64

Author: oscarbenjamin

bin/build_dependencies_unix.sh

@@ -18,6 +18,7 @@ set -o errexit
 
 SKIP_GMP=no
 SKIP_MPFR=no
+FAT_GMP_ARG="--enable-fat"
 
 USE_GMP=gmp
 PATCH_GMP_ARM64=no
@@ -37,6 +38,7 @@ do
       echo "  --host <HOST>     - set the host (target) for GMP build"
       echo "  --skip-gmp        - skip building GMP"
       echo "  --skip-mpfr       - skip building MPFR"
+      echo "  --disable-fat     - disable building fat binaries"
       echo
       echo "Legacy options:"
       echo "  --gmp gmp         - build based on GMP (default)"
@@ -83,6 +85,11 @@ do
       SKIP_MPFR=yes
       shift
     ;;
+    --disable-fat)
+      # Disable building fat binaries
+      FAT_GMP_ARG="--disable-assembly"
+      shift
+    ;;
     --patch-gmp-arm64)
       # Needed only for GMP 6.2.1 on OSX arm64 (Apple M1) hardware
       # As of GMP 6.3.0 this patch is no longer needed
@@ -190,7 +197,7 @@ if [ $USE_GMP = "gmp" ]; then
       ./configfsf.guess
 
       ./configure --prefix=$PREFIX\
-        --enable-fat\
+        $FAT_GMP_ARG\
         --enable-shared=yes\
         --enable-static=no\
         --host=$HOST_ARG

bin/cibw_before_all_windows_arm64.sh

@@ -15,6 +15,7 @@ pacman -S --noconfirm \
     #
 
 bin/build_dependencies_unix.sh \
+    --disable-fat\
     --use-gmp-github-mirror\
     --patch-C23\
     #