CheckLinkerFlag: rely now on internal implementation

This internal implementation share the configuration
with CheckCompilerFlag.

1 files changed, 35 insertions, 0 deletions

diff --git a/Modules/Internal/CheckLinkerFlag.cmake b/Modules/Internal/CheckLinkerFlag.cmake
new file mode 100644
index 0000000..285372a
--- /dev/null
+++ b/Modules/Internal/CheckLinkerFlag.cmake
@@ -0,0 +1,35 @@
+# Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
+# file Copyright.txt or https://cmake.org/licensing for details.
+
+include_guard(GLOBAL)
+include(Internal/CheckFlagCommonConfig)
+include(Internal/CheckSourceCompiles)
+include(CMakeCheckCompilerFlagCommonPatterns)
+
+cmake_policy(PUSH)
+cmake_policy(SET CMP0054 NEW) # if() quoted variables not dereferenced
+
+function(CMAKE_CHECK_LINKER_FLAG _lang _flag _var)
+  # link step supports less languages than the compiler
+  # so do a first check about the requested language
+  if (_lang STREQUAL "ISPC")
+    message (SEND_ERROR "check_linker_flag: ${_lang}: unsupported language.")
+    return()
+  endif()
+
+  cmake_check_flag_common_init("check_linker_flag" ${_lang} _lang_src _lang_fail_regex)
+
+  set(CMAKE_REQUIRED_LINK_OPTIONS "${_flag}")
+
+  check_compiler_flag_common_patterns(_common_patterns)
+  cmake_check_source_compiles(${_lang}
+    "${_lang_src}"
+    ${_var}
+    ${_lang_fail_regex}
+    ${_common_patterns}
+    )
+
+  cmake_check_flag_common_finish()
+endfunction()
+
+cmake_policy(POP)