From 90b0c577bc2f368b62e05211062af72d15f0d5c4 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Thu, 23 Feb 2012 15:21:15 +0200
Subject: Add support for detecting C++ standard

---
 build/cxx/gnu/configure   | 13 +++++++++++++
 build/cxx/intel/configure | 13 +++++++++++++
 build/cxx/standard.make   | 34 ++++++++++++++++++++++++++++++++++
 3 files changed, 60 insertions(+)
 create mode 100644 build/cxx/standard.make

(limited to 'build/cxx')

diff --git a/build/cxx/gnu/configure b/build/cxx/gnu/configure
index 81848f7..c551713 100755
--- a/build/cxx/gnu/configure
+++ b/build/cxx/gnu/configure
@@ -29,6 +29,18 @@ $echo
 
 cxx_gnu=`read_path --command g++`
 
+# Determine the C++ standard.
+#
+cxx_gnu_standard=`echo "$3" | sed -e 's/.*-std=\([^ ]*\).*/\1/' -e t -e d`
+
+if [ -z "$cxx_gnu_standard" ]; then
+  cxx_gnu_standard="gnu++98"
+elif [ "$cxx_gnu_standard" = "c++0x" ]; then
+  cxx_gnu_standard="c++11"
+elif [ "$cxx_gnu_standard" = "gnu++0x" ]; then
+  cxx_gnu_standard="gnu++11"
+fi
+
 # Pass cxx_extra_options and cxx_ld_extra_options since those
 # can affect the search paths (e.g., -m32) and target.
 #
@@ -76,6 +88,7 @@ if [ "$2" == "y" ]; then
 fi
 
 echo "cxx_gnu := $cxx_gnu"                              > $1
+echo "cxx_gnu_standard := $cxx_gnu_standard"           >> $1
 echo "cxx_gnu_libraries := $cxx_gnu_libraries"         >> $1
 echo "cxx_gnu_optimization_options := $optimization"   >> $1
 echo "cxx_gnu_target := $cxx_gnu_target"               >> $1
diff --git a/build/cxx/intel/configure b/build/cxx/intel/configure
index d044cab..7f79dd8 100755
--- a/build/cxx/intel/configure
+++ b/build/cxx/intel/configure
@@ -29,6 +29,19 @@ $echo
 
 cxx_intel=`read_path --command icpc`
 
+# Determine the C++ standard. Intel C++ on GNU/Linux appears to use the
+# same option and values as GCC.
+#
+cxx_intel_standard=`echo "$3" | sed -e 's/.*-std=\([^ ]*\).*/\1/' -e t -e d`
+
+if [ -z "$cxx_intel_standard" ]; then
+  cxx_intel_standard="gnu++98"
+elif [ "$cxx_intel_standard" = "c++0x" ]; then
+  cxx_intel_standard="c++11"
+elif [ "$cxx_intel_standard" = "gnu++0x" ]; then
+  cxx_intel_standard="gnu++11"
+fi
+
 # Pass cxx_extra_options and cxx_ld_extra_options since those
 # can affect the search paths (e.g., -m32).
 #
diff --git a/build/cxx/standard.make b/build/cxx/standard.make
new file mode 100644
index 0000000..fcc33e4
--- /dev/null
+++ b/build/cxx/standard.make
@@ -0,0 +1,34 @@
+# file      : build/cxx/standard.make
+# copyright : Copyright (c) 2004-2012 Code Synthesis Tools CC
+# license   : GNU GPL v2; see accompanying LICENSE file
+
+# Set the cxx_standard variable to either c++98 or c++11.
+#
+$(call include,$(bld_root)/cxx/configuration.make) # cxx_id
+
+cxx_standard :=
+
+ifdef cxx_id
+  $(call include,$(bld_root)/cxx/$(cxx_id)/configuration.make) # cxx_*_standard
+  ifeq ($(cxx_id),gnu)
+    ifdef cxx_gnu
+      ifneq ($(filter $(cxx_gnu_standard),c++11 gnu++11),)
+        cxx_standard := c++11
+      else
+        cxx_standard := c++98
+      endif
+    endif
+  else ifeq ($(cxx_id),intel)
+    ifdef cxx_intel
+      ifneq ($(filter $(cxx_intel_standard),c++11 gnu++11),)
+        cxx_standard := c++11
+      else
+        cxx_standard := c++98
+      endif
+    endif
+  else ifeq ($(cxx_id),generic)
+    cxx_standard := c++98
+  else
+    $(error unknown C++ compiler $(cxx_id))
+  endif
+endif
-- 
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