[CMake][OpenMP] Remove -Wl,--warn-shared-textrel

This option is legacy and is removed from GNU ld's doc (many binutils
distributions are configured with --enable-textrel-check=). lld ignores the
option.

Author: MaskRay

openmp/runtime/cmake/LibompHandleFlags.cmake

@@ -99,7 +99,6 @@ function(libomp_get_ldflags ldflags)
     IF_DEFINED CMAKE_C_OSX_CURRENT_VERSION_FLAG)
   libomp_append(ldflags_local "${CMAKE_C_OSX_COMPATIBILITY_VERSION_FLAG}${LIBOMP_VERSION_MAJOR}.${LIBOMP_VERSION_MINOR}"
     IF_DEFINED CMAKE_C_OSX_COMPATIBILITY_VERSION_FLAG)
-  libomp_append(ldflags_local -Wl,--warn-shared-textrel LIBOMP_HAVE_WARN_SHARED_TEXTREL_FLAG)
   libomp_append(ldflags_local -Wl,--as-needed LIBOMP_HAVE_AS_NEEDED_FLAG)
   libomp_append(ldflags_local "-Wl,--version-script=${LIBOMP_SRC_DIR}/exports_so.txt" LIBOMP_HAVE_VERSION_SCRIPT_FLAG)
   libomp_append(ldflags_local "-Wl,--undefined-version" LIBOMP_HAVE_UNDEFINED_VERSION_FLAG)  # FIXME issue #58858

openmp/runtime/cmake/config-ix.cmake

@@ -130,7 +130,6 @@ if(WIN32)
   libomp_check_linker_flag(/SAFESEH LIBOMP_HAVE_SAFESEH_FLAG)
 elseif(NOT APPLE)
   libomp_check_linker_flag(-Wl,-x LIBOMP_HAVE_X_FLAG)
-  libomp_check_linker_flag(-Wl,--warn-shared-textrel LIBOMP_HAVE_WARN_SHARED_TEXTREL_FLAG)
   libomp_check_linker_flag(-Wl,--as-needed LIBOMP_HAVE_AS_NEEDED_FLAG)
   libomp_check_linker_flag("-Wl,--version-script=${LIBOMP_SRC_DIR}/exports_so.txt" LIBOMP_HAVE_VERSION_SCRIPT_FLAG)
   libomp_check_linker_flag("-Wl,--undefined-version" LIBOMP_HAVE_UNDEFINED_VERSION_FLAG)  # FIXME issue #58858