CMake: Port the reduce-relocations feature

As reduce-relocations implies bsymbolic_functions, we also add the
-Bsymbolic-functions linker flag.
Also, handle the .dynlist files that are passed to the linker by
bsymbolic_functions.prf in the qmake build.

Change-Id: I535c33fba888596d2f8975b16864bbe9f0a7caa4
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>

1 files changed, 0 insertions, 12 deletions

diff --git a/src/corelib/Qt6CoreConfigExtras.cmake.in b/src/corelib/Qt6CoreConfigExtras.cmake.in
index cb1dc9689c..984980b5dc 100644
--- a/src/corelib/Qt6CoreConfigExtras.cmake.in
+++ b/src/corelib/Qt6CoreConfigExtras.cmake.in
@@ -18,18 +18,6 @@ if (NOT QT_NO_CREATE_TARGETS)
     set_property(TARGET @QT_CMAKE_EXPORT_NAMESPACE@::Core APPEND PROPERTY
       COMPATIBLE_INTERFACE_STRING QT_MAJOR_VERSION QT_COORD_TYPE
     )
-
-    # On x86 and x86-64 systems with ELF binaries (especially Linux), due to
-    # a new optimization in GCC 5.x in combination with a recent version of
-    # GNU binutils, compiling Qt applications with -fPIE is no longer
-    # enough.
-    # Applications now need to be compiled with the -fPIC option if the Qt option
-    # \"reduce relocations\" is active. For backward compatibility only, Qt accepts
-    # the use of -fPIE for GCC 4.x versions.
-    if (CMAKE_CXX_COMPILER MATCHES "icc.*$" OR CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
-        set_property(TARGET @QT_CMAKE_EXPORT_NAMESPACE@::Core APPEND PROPERTY INTERFACE_COMPILE_OPTIONS "-fPIC")
-    endif()
-
     if (NOT "@QT_NAMESPACE@" STREQUAL "")
         set_property(TARGET @QT_CMAKE_EXPORT_NAMESPACE@::Core APPEND PROPERTY INTERFACE_COMPILE_DEFINITIONS QT_NAMESPACE=@QT_NAMESPACE@)
     endif()