Skip to content

cmake: Do not link an executable to detect the compiler. #19507

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

Merged
xiaoxiang781216 merged 1 commit into from
Jul 25, 2026
+13 −0
Merged

cmake: Do not link an executable to detect the compiler. #19507

Changes from all commits
Commits
Show all changes
1 commit
Select commit
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
13 changes: 13 additions & 0 deletions CMakeLists.txt
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -475,6 +475,19 @@ list(APPEND CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/arch/${CONFIG_ARCH}/src/cmake)
set(CMAKE_TOOLCHAIN_FILE
"${CMAKE_SOURCE_DIR}/arch/${CONFIG_ARCH}/src/cmake/Toolchain.cmake")

# Compiler detection must not try to link a full executable. CMake validates a
# compiler by building and linking a test program, but a bare metal cross
# toolchain has no start files, default linker script or libc, and the link
# flags NuttX supplies assume a newlib toolchain (--specs=nosys.specs). A
# usable cross gcc without those specs then fails configuration before any NuttX
# source is considered. Building a static library instead exercises the
# compiler and stops short of the link. sim is hosted and links normally, so it
# keeps the usual executable-based detection.

if(NOT CONFIG_ARCH STREQUAL "sim")
set(CMAKE_TRY_COMPILE_TARGET_TYPE STATIC_LIBRARY)
endif()

# Define project #############################################################
# This triggers configuration

Expand Down
Loading