diff options
author | Alexandru Croitor <alexandru.croitor@qt.io> | 2020-10-05 16:49:53 +0200 |
---|---|---|
committer | Alexandru Croitor <alexandru.croitor@qt.io> | 2020-10-12 13:35:48 +0200 |
commit | c6a5cdcee6a218fe445c8c2fb3549d8b265561e4 (patch) | |
tree | 6a30fb07e7dad782a7f971db7f62c38f5e51f0e2 /cmake/QtPrlHelpers.cmake | |
parent | 7c12c8d113b9a7eae00e06ba75a6c6cce0d97d3d (diff) |
CMake: Introduce Qt6::Startup target
Add an abstraction over Qt::WinMain (aka qtmain.lib) and
iOS's runtime linker entry point (_qt_main_wrapper).
The Core target will now link against the Startup target on all
platforms, instead of just WinMain on Windows.
The creation and linkage interface definition of the Startup target
is done at find_package(Qt6Core) time via the private call of
_qt_internal_setup_startup_target().
This will add automatic linkage of WinMain to executables marked with
the WIN32_EXECUTABLE property on Windows.
As well as the addition of the '-Wl,-e,_qt_main_wrapper' linker flag
when linking iOS executables.
Qt users can opt out of this behavior by either setting the
QT_NO_LINK_QTMAIN property or variable. This is in line with
Qt 5 behavior.
Task-number: QTBUG-87060
Change-Id: I7d5e9f1be0e402cf8e67e6f55bfd285f9e6b04f4
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
Diffstat (limited to 'cmake/QtPrlHelpers.cmake')
-rw-r--r-- | cmake/QtPrlHelpers.cmake | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/cmake/QtPrlHelpers.cmake b/cmake/QtPrlHelpers.cmake index 7977afd030..932565f318 100644 --- a/cmake/QtPrlHelpers.cmake +++ b/cmake/QtPrlHelpers.cmake @@ -29,6 +29,16 @@ function(qt_internal_walk_libs target out_var dict_name operation) return() endif() list(APPEND collected ${target}) + + if(target STREQUAL "${QT_CMAKE_EXPORT_NAMESPACE}::Startup") + # We can't (and don't need to) process Startup, because it contains $<TARGET_PROPERTY:prop> + # genexes which get replaced with $<TARGET_PROPERTY:Startup,prop> genexes in the code below + # and that causes 'INTERFACE_LIBRARY targets may only have whitelisted properties.' errors + # with CMake versions equal to or lower than 3.18. These errors are super unintuitive to + # debug because there's no mention that it's happening during a file(GENERATE) call. + return() + endif() + if(NOT TARGET ${dict_name}) add_library(${dict_name} INTERFACE IMPORTED GLOBAL) endif() |