From: David Wells <wellsd2@rpi.edu>
Date: Fri, 31 Mar 2017 19:34:09 +0000 (-0400)
Subject: Remove non-C++11 mode compiler flag checks.
X-Git-Tag: v9.0.0-rc1~1747^2
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F4106%2Fhead;p=dealii.git

Remove non-C++11 mode compiler flag checks.

These options no longer apply since we do not support compilation with
either old versions of GCC (first check) or non-C++11 mode (second and
third checks).
---

diff --git a/cmake/setup_compiler_flags_gnu.cmake b/cmake/setup_compiler_flags_gnu.cmake
index 59504616cc..96ab6ae1fe 100644
--- a/cmake/setup_compiler_flags_gnu.cmake
+++ b/cmake/setup_compiler_flags_gnu.cmake
@@ -38,10 +38,7 @@ ENDIF()
 #
 # Set -pedantic if the compiler supports it.
 #
-IF(NOT (CMAKE_CXX_COMPILER_ID MATCHES "GNU" AND
-        CMAKE_CXX_COMPILER_VERSION VERSION_LESS "4.4"))
-  ENABLE_IF_SUPPORTED(DEAL_II_CXX_FLAGS "-pedantic")
-ENDIF()
+ENABLE_IF_SUPPORTED(DEAL_II_CXX_FLAGS "-pedantic")
 
 #
 # Set the pic flag.
@@ -66,12 +63,6 @@ ENABLE_IF_SUPPORTED(DEAL_II_CXX_FLAGS "-Wsign-compare")
 ENABLE_IF_SUPPORTED(DEAL_II_CXX_FLAGS "-Wswitch")
 ENABLE_IF_SUPPORTED(DEAL_II_CXX_FLAGS "-Woverloaded-virtual")
 
-#
-# Disable Wlong-long that will trigger a lot of warnings when compiling
-# with disabled C++11 support:
-#
-ENABLE_IF_SUPPORTED(DEAL_II_CXX_FLAGS "-Wno-long-long")
-
 #
 # Disable Wplacement-new that will trigger a lot of warnings
 # in the BOOST function classes that we include via the
@@ -105,11 +96,6 @@ IF(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
   ENABLE_IF_SUPPORTED(DEAL_II_CXX_FLAGS "-Wno-unused-parameter")
   ENABLE_IF_SUPPORTED(DEAL_II_CXX_FLAGS "-Wno-unused-variable")
 
-  # without c++11 enabled, clang produces a ton of warnings in boost:
-  ENABLE_IF_SUPPORTED(DEAL_II_CXX_FLAGS "-Wno-c99-extensions")
-  ENABLE_IF_SUPPORTED(DEAL_II_CXX_FLAGS "-Wno-variadic-macros")
-  ENABLE_IF_SUPPORTED(DEAL_II_CXX_FLAGS "-Wno-c++11-extensions")
-
   #
   # Disable a diagnostic that warns about potentially uninstantiated static
   # members. This leads to a ton of false positives.