diff options
| author | Joerg Bornemann <joerg.bornemann@qt.io> | 2023-02-22 10:47:00 +0100 |
|---|---|---|
| committer | Joerg Bornemann <joerg.bornemann@qt.io> | 2023-02-23 08:50:39 +0100 |
| commit | 4183768d9bc6f80ac7b86c3dbf93e6b251369ae4 (patch) | |
| tree | c550b82a7b3abe649b67ff37110aecee5373b0be /cmake | |
| parent | 78f7a8c418bc887ebb5bd75f63e35a2b8108f107 (diff) | |
CMake: Fix position independent code linker flags not being set
We set CMAKE_POSITION_INDEPENDENT_CODE to ON and require CMake 3.16.
This sets CMP0083 to NEW and should pass -fPIE to linker calls as well.
However, the PIE-enabling flag is not passed to the linker unless we
call check_pie_supported(). This behavior is documented in CMake's
CMP0083 documentation page.
[ChangeLog][CMake] Qt tools are now built with position independent code
even with Unix toolchains where this is not the default, for example
clang.
Pick-to: 6.5 6.4 6.2
Change-Id: I1d98e0ea7063a76e3fddc94d6555c6eaf14c7885
Reviewed-by: Alexey Edelev <alexey.edelev@qt.io>
Diffstat (limited to 'cmake')
| -rw-r--r-- | cmake/QtSetup.cmake | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/cmake/QtSetup.cmake b/cmake/QtSetup.cmake index 019a579a4a..262b60d171 100644 --- a/cmake/QtSetup.cmake +++ b/cmake/QtSetup.cmake @@ -119,6 +119,10 @@ endif() ## Position independent code: set(CMAKE_POSITION_INDEPENDENT_CODE ON) +# Does the linker support position independent code? +include(CheckPIESupported) +check_pie_supported() + # Do not relink dependent libraries when no header has changed: set(CMAKE_LINK_DEPENDS_NO_SHARED ON) |