build: eliminate warnings

a2e754c1 · Alexander Alekhin · 5339ef30 · a2e754c1
Commit a2e754c1 authored Oct 17, 2018 by Alexander Alekhin
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OpenCVCompilerOptions.cmake cmake/OpenCVCompilerOptions.cmake +3 -1

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--- a/cmake/OpenCVCompilerOptions.cmake
+++ b/cmake/OpenCVCompilerOptions.cmake
@@ -103,7 +103,9 @@ if(CV_GCC OR CV_CLANG)
  add_extra_compiler_option(-Wundef)
  add_extra_compiler_option(-Winit-self)
  add_extra_compiler_option(-Wpointer-arith)
-  add_extra_compiler_option(-Wshadow)
+  if(NOT (CV_GCC AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS "5.0"))
+    add_extra_compiler_option(-Wshadow)  # old GCC emits warnings for variables + methods combination
+  endif()
  add_extra_compiler_option(-Wsign-promo)
  add_extra_compiler_option(-Wuninitialized)
  add_extra_compiler_option(-Winit-self)