Work around ARM64 Windows SDK arm_neon.h quirk

Since the Windows SDK has an ARM32-only arm_neon.h, files including it
during ARM64 Windows builds need to be redirected to arm64_neon.h.

Instead of editing many files to include ARM64-Windows-specific ifdef
logic, this commit introduces an ARM64-Windows-specific version of
arm_neon.h that performs the needed redirection and lands earlier in
the header search path than the ARM32-only arm_neon.h.

Change-Id: Idc63947a238ca1bd0c479d8f4ad68950487947c6

1 files changed, 1 insertions, 0 deletions

diff --git a/configure b/configure
index 966fedba4..e0ffb55b4 100755
--- a/configure
+++ b/configure
@@ -449,6 +449,7 @@ process_targets() {
     enabled child || write_common_config_banner
     write_common_target_config_h ${BUILD_PFX}vpx_config.h
     write_common_config_targets
+    enabled win_arm64_neon_h_workaround && write_win_arm64_neon_h_workaround ${BUILD_PFX}arm_neon.h
 
     # Calculate the default distribution name, based on the enabled features
     cf=""