# HG changeset patch
# User "Yann E. MORIN" <yann.morin.1998@free.fr>
# Date 1388848758 -3600
# Node ID 22239d19ad65d57d5602e613a6a717b35bae536c
# Parent  eacd3115e674fd232e429d6c3772682c4740906c
libc/uClibc: add option to enable fenv

Support for fenv.h is a little bit more tricky that enabling it only
for x86-32 is not right.

Add an option for the user to choose whther to install fenv.h or not.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>

diff -r eacd3115e674 -r 22239d19ad65 config/libc/uClibc.in.2
--- a/config/libc/uClibc.in.2	Mon Jan 06 20:05:14 2014 +0100
+++ b/config/libc/uClibc.in.2	Sat Jan 04 16:19:18 2014 +0100
@@ -65,3 +65,18 @@
       Say y if you want uClibc to support WCHAR.
 
       Maybe this is needed, if you're building a C++-Compiler
+
+config LIBC_UCLIBC_FENV
+    bool
+    prompt "Add support for fenv.h"
+    default y if ARCH_x86
+    help
+      fenv.h provides functions to control the floating point environment,
+      such as rounding mode, exceptions...
+
+      For some architectures, fenv.h is incomplete, so is not installed
+      by default. x86 is known to have a rather complete fenv.h, so it is
+      installed by default only for x86.
+
+      If you need fenv.h on other architectures, say 'y' here, but you may
+      encounter some issues.
diff -r eacd3115e674 -r 22239d19ad65 scripts/build/libc/uClibc.sh
--- a/scripts/build/libc/uClibc.sh	Mon Jan 06 20:05:14 2014 +0100
+++ b/scripts/build/libc/uClibc.sh	Sat Jan 04 16:19:18 2014 +0100
@@ -315,13 +315,6 @@
                     ;;
             esac
             ;;
-        x86)
-            if [ "${CT_ARCH_BITNESS}" = "32" ]; then
-                 cat <<-ENDSED
-					s/.*(UCLIBC_HAS_FENV).*/\\1=y/
-					ENDSED
-            fi
-            ;;
     esac
 
     # Accomodate for old and new uClibc versions, where the
@@ -374,6 +367,11 @@
 				ENDSED
             ;;
     esac
+    if [ "${CT_LIBC_UCLIBC_FENV}" = "y" ]; then
+        cat <<-ENDSED
+			s/.*(UCLIBC_HAS_FENV).*/\\1=y/
+			ENDSED
+    fi
 
     # We always want ctor/dtor
     cat <<-ENDSED