From 52f8dd01a1ff314c9049c579b06c9df363e15777 Mon Sep 17 00:00:00 2001
From: Richard PALO <richard@NetBSD.org>
Date: Sat, 1 Nov 2014 08:18:10 +0100
Subject: [PATCH] add USE_LANGUAGES support for c11 and c++11

update compiler.mk and compiler/{clang.mk,gcc.mk} as well as
wrapper/transform-gcc to support c11 and c++11
update CWRAPPERS needs as well for c99, c11 and c++11
---
 mk/compiler.mk           | 14 ++++++++++----
 mk/compiler/clang.mk     | 21 +++++++++++++++++++++
 mk/compiler/gcc.mk       | 27 ++++++++++++++++++++++-----
 mk/wrapper/transform-gcc |  4 ++++
 4 files changed, 57 insertions(+), 9 deletions(-)

diff --git a/mk/compiler.mk b/mk/compiler.mk
index 9e49242..9f4a187 100644
--- a/mk/compiler.mk
+++ b/mk/compiler.mk
@@ -42,8 +42,9 @@
 # USE_LANGUAGES
 #	Lists the languages used in the source code of the package,
 #	and is used to determine the correct compilers to install.
-#	Valid values are: c, c99, c++, fortran, fortran77, java, objc,
-#	obj-c++, and ada.  The default is "c".
+#	Valid values are: c, c99, c11, c++, c++11, fortran, fortran77,
+#	java, objc, obj-c++, and ada.
+#	The default is "c".
 #
 # The following variables are defined, and available for testing in
 # package Makefiles:
@@ -72,11 +73,16 @@ _SYS_VARS.compiler=	CC_VERSION
 # Since most packages need a C compiler, this is the default value.
 USE_LANGUAGES?=	c
 
-# Add c support if c99 is set
-.if !empty(USE_LANGUAGES:Mc99)
+# Add c support if c99 or C11 is set
+.if !empty(USE_LANGUAGES:Mc99) || !empty(USE_LANGUAGES:Mc11)
 USE_LANGUAGES+=	c
 .endif
 
+# add c++ support if c++11 is set
+.if !empty(USE_LANGUAGES:Mc++11)
+USE_LANGUAGES+=	c++
+.endif
+
 COMPILER_USE_SYMLINKS?=	yes
 
 _COMPILERS=		ccc gcc icc ido mipspro mipspro-ucode \
diff --git a/mk/compiler/clang.mk b/mk/compiler/clang.mk
index dec52a1..24593a2 100644
--- a/mk/compiler/clang.mk
+++ b/mk/compiler/clang.mk
@@ -67,6 +67,27 @@ PKGSRC_FORTRAN?=g95
 .  include "../../mk/compiler/${PKGSRC_FORTRAN}.mk"
 .endif
 
+# check c std in reverse order to privilege latest standard
+.if !empty(USE_LANGUAGES:Mc11)
+_WRAP_EXTRA_ARGS.CC+=	-std=c11
+CWRAPPERS_APPEND.cc+=	-std=c11
+.elif !empty(USE_LANGUAGES:Mc99)
+_WRAP_EXTRA_ARGS.CC+=	-std=c99
+CWRAPPERS_APPEND.cc+=	-std=c99
+.endif
+
+# check c++ std in reverse order to privilege latest standard
+# refer to http://clang.llvm.org/cxx_status.html
+# PM: this section presumes pkgsrc is using clang >= 3.4
+#
+.if !empty(USE_LANGUAGES:Mc++11)
+# clang 3.3 and later needed for c++11
+_WRAP_EXTRA_ARGS.CXX+=	-std=c++11
+CWRAPPERS_APPEND.cxx+=	-std=c++11
+# By default, Clang builds C++ code according to the C++98 standard,
+# with many C++11 features accepted as extensions.
+.endif
+
 _WRAP_EXTRA_ARGS.CC+=	-Qunused-arguments
 CWRAPPERS_APPEND.cc+=	-Qunused-arguments
 _WRAP_EXTRA_ARGS.CXX+=	-Qunused-arguments
diff --git a/mk/compiler/gcc.mk b/mk/compiler/gcc.mk
index 3fb8532..2a5c227 100644
--- a/mk/compiler/gcc.mk
+++ b/mk/compiler/gcc.mk
@@ -92,8 +92,9 @@ USE_PKGSRC_GCC_RUNTIME?=no
 
 GCC_REQD+=	2.8.0
 
-# gcc2 doesn't support c99 and amd64
-.if !empty(USE_LANGUAGES:Mc99) || ${MACHINE_ARCH} == "x86_64"
+# gcc2 doesn't support c99, c11 and amd64
+.if !empty(USE_LANGUAGES:Mc99) || !empty(USE_LANGUAGES:Mc11) ||\
+	${MACHINE_ARCH} == "x86_64"
 GCC_REQD+=	3.0
 .endif
 
@@ -333,9 +334,25 @@ _LANGUAGES.gcc=		# empty
 _LANGUAGES.gcc+=	${LANGUAGES.gcc:M${_lang_}}
 .endfor
 
-.if !empty(USE_LANGUAGES:Mc99)
-_WRAP_EXTRA_ARGS.CC+=	-std=gnu99
-CWRAPPERS_APPEND.cc+=	-std=gnu99
+# check c std in reverse order to privilege latest standard
+#
+.if !empty(USE_LANGUAGES:Mc11)
+# GCC 4.7 and later needed for c11 (although not complete)
+GCC_REQD+=	4.7
+_WRAP_EXTRA_ARGS.CC+=	-std=c11
+CWRAPPERS_APPEND.cc+=	-std=c11
+.elif !empty(USE_LANGUAGES:Mc99)
+_WRAP_EXTRA_ARGS.CC+=	-std=c99
+CWRAPPERS_APPEND.cc+=	-std=c99
+.endif
+
+# check c++ std in reverse order to privilege latest standard
+#
+.if !empty(USE_LANGUAGES:Mc++11)
+# GCC 4.7 and later needed for c++11 (although still experimental)
+GCC_REQD+=	4.7
+_WRAP_EXTRA_ARGS.CXX+=	-std=c++11
+CWRAPPERS_APPEND.cxx+=	-std=c++11
 .endif
 
 # GCC has this annoying behaviour where it advocates in a multi-line
diff --git a/mk/wrapper/transform-gcc b/mk/wrapper/transform-gcc
index 3dd6624..4cddc59 100644
--- a/mk/wrapper/transform-gcc
+++ b/mk/wrapper/transform-gcc
@@ -78,6 +78,10 @@ case $arg in
 -std=c99		|\
 -std=gnu89		|\
 -std=gnu99		|\
+-std=c11		|\
+-std=gnu11		|\
+-std=c++11		|\
+-std=gnu++11		|\
 -W			|\
 -W[cLlS],*		|\
 -Wall			|\
-- 
2.6.3