From 2f1a55c0b13ea02619f0d209a2b710fb7cbe8a1a Mon Sep 17 00:00:00 2001
From: Joerg Bornemann <joerg.bornemann@qt.io>
Date: Thu, 20 Aug 2020 09:06:16 +0200
Subject: CMake: Implement configure -linker [bfd,gold,lld]

Fixes: QTBUG-86155
Change-Id: I5ba2d3b52d9ca240b48904c492f7902a056c0292
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
---
 cmake/QtInternalTargets.cmake    | 8 ++++++++
 cmake/configure-cmake-mapping.md | 3 ++-
 2 files changed, 10 insertions(+), 1 deletion(-)

(limited to 'cmake')

diff --git a/cmake/QtInternalTargets.cmake b/cmake/QtInternalTargets.cmake
index bd3d034f60..e59e075d32 100644
--- a/cmake/QtInternalTargets.cmake
+++ b/cmake/QtInternalTargets.cmake
@@ -213,6 +213,14 @@ if(DEFINED QT_EXTRA_FRAMEWORKPATHS AND APPLE)
     unset(__qt_fw_flags)
 endif()
 
+if(QT_FEATURE_use_gold_linker)
+    target_link_options(PlatformCommonInternal INTERFACE "-fuse-ld=gold")
+elseif(QT_FEATURE_use_bfd_linker)
+    target_link_options(PlatformCommonInternal INTERFACE "-fuse-ld=bfd")
+elseif(QT_FEATURE_use_lld_linker)
+    target_link_options(PlatformCommonInternal INTERFACE "-fuse-ld=lld")
+endif()
+
 function(qt_get_implicit_sse2_genex_condition out_var)
     set(is_shared_lib "$<STREQUAL:$<TARGET_PROPERTY:TYPE>,SHARED_LIBRARY>")
     set(is_static_lib "$<STREQUAL:$<TARGET_PROPERTY:TYPE>,STATIC_LIBRARY>")
diff --git a/cmake/configure-cmake-mapping.md b/cmake/configure-cmake-mapping.md
index e0edfe98e7..cafe139ce8 100644
--- a/cmake/configure-cmake-mapping.md
+++ b/cmake/configure-cmake-mapping.md
@@ -66,7 +66,8 @@ The effort of this is tracked in QTBUG-85373 and QTBUG-85349.
 | -static-runtime                       | -DFEATURE_static_runtime=ON                       |                                                                 |
 | -pch                                  | -DBUILD_WITH_PCH=ON                               |                                                                 |
 | -ltcg                                 |                                                   |                                                                 |
-| -linker [bfd,gold,lld]                |                                                   |                                                                 |
+| -linker [bfd,gold,lld]                | -DINPUT_linker=<name> or                          |                                                                 |
+|                                       | -DFEATURE_use_<name>_linker=ON                    |                                                                 |
 | -incredibuild-xge                     |                                                   |                                                                 |
 | -ccache                               | -DQT_USE_CCACHE=ON                                |                                                                 |
 | -make-tool <tool>                     | n/a                                               |                                                                 |
-- 
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