Skip to content

Detect NEON support more reliably in environment.cmake #136

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
wants to merge 2 commits into
base: master
Choose a base branch
from
Open

Detect NEON support more reliably in environment.cmake #136

Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
649289a
Detect NEON support more reliably in `environment.cmake`
louwers Apr 10, 2025
e272d43
Update environment.cmake
louwers Apr 10, 2025
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
22 changes: 14 additions & 8 deletions cmake_modules/environment.cmake
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,10 +1,16 @@
include(CheckCXXCompilerFlag)
include(CheckCSourceCompiles)

if (CMAKE_SYSTEM_PROCESSOR MATCHES "arm64" OR CMAKE_SYSTEM_PROCESSOR MATCHES "arm" OR CMAKE_SYSTEM_PROCESSOR MATCHES "aarch64")
set(SUPPORT_NEON ON)
endif ()
# Check if NEON is supported by compiling a test program
check_c_source_compiles("
#include <arm_neon.h>
int main() {
float32x4_t a = vdupq_n_f32(0.0f);
return 0;
}
" SUPPORT_NEON)

# Check if the Visual Studio build is targeting ARM
if (CMAKE_GENERATOR_PLATFORM MATCHES "ARM64" OR CMAKE_GENERATOR_PLATFORM MATCHES "ARM")
set(SUPPORT_NEON ON)
endif ()
if(SUPPORT_NEON)
message(STATUS "NEON support enabled")
else()
message(STATUS "NEON not supported")
endif()