[oe] [meta-oe][PATCH] mg: fix build when host system does not have libncurses-dev

[Ben Shelton]

The configure script for mg checks the standard locations under /usr for
the term.h header file needed to build against ncurses; however, in the
OE cross-compile case, this is not valid, since the file will be under
the sysroot instead.  This causes the configure step to fail when the
build machine does not have the libncurses-dev package installed.

To fix the issue, remove the check.  Since mg DEPENDS on ncurses, term.h
will always be there.

Signed-off-by: Ben Shelton <ben.shelton at ni.com>
---
NOTE: I tried updating the recipe to the newest version of mg, but the way it's
built has changed quite a bit, and I hit some build errors after a quick update
of the recipe.  I'd like to get some feedback on whether this patch is an OK
way to remove the check or whether there's a better way to do it.  Thanks!

 .../mg/files/remove_ncurses_check.patch            | 36 ++++++++++++++++++++++
 meta-oe/recipes-support/mg/mg_20110905.bb          |  3 +-
 2 files changed, 38 insertions(+), 1 deletion(-)
 create mode 100644 meta-oe/recipes-support/mg/files/remove_ncurses_check.patch

diff --git a/meta-oe/recipes-support/mg/files/remove_ncurses_check.patch b/meta-oe/recipes-support/mg/files/remove_ncurses_check.patch
new file mode 100644
index 0000000..16137da
--- /dev/null
+++ b/meta-oe/recipes-support/mg/files/remove_ncurses_check.patch
@@ -0,0 +1,36 @@
+diff -uwr mg-20110905/configure mg-20110905-changed/configure
+--- mg-20110905/configure	2011-09-05 13:36:16.000000000 -0500
++++ mg-20110905-changed/configure	2014-08-14 10:46:14.168715425 -0500
+@@ -163,32 +163,6 @@
+     echo 'Fails.'
+ fi
+ 
+-
+-if [ ! -r /usr/include/term.h ]; then
+-    note 'term.h'
+-    if [ -r /usr/include/ncurses/term.h ]; then
+-	echo "Found in /usr/include/ncurses"
+-	extraflags="$extraflags -I/usr/include/ncurses"
+-    else
+-	for i in pkg local; do
+-	    if [ -r /usr/$i/include/term.h ]; then
+-		echo "Found in /usr/$i/include"
+-		extralibs="$extralibs -L/usr/$i/lib"
+-		extraflags="$extraflags -I/usr/$i/include"
+-		break
+-	    else
+-		false
+-	    fi
+-	done ||
+-	{
+-	    echo 'Not found!' >&2
+-	    echo 'Do you have the ncurses devel package installed?' >&2
+-	    echo 'If you know where term.h is, please email the author!' >&2
+-	    exit 1
+-	}
+-    fi
+-fi
+-
+ note 'base and dirname'
+ if gcc_defines "__GLIBC__" || gcc_defines "__CYGWIN__" ; then
+     echo 'Not present, adding.'
diff --git a/meta-oe/recipes-support/mg/mg_20110905.bb b/meta-oe/recipes-support/mg/mg_20110905.bb
index 33cc038..b9a4d33 100644
--- a/meta-oe/recipes-support/mg/mg_20110905.bb
+++ b/meta-oe/recipes-support/mg/mg_20110905.bb
@@ -5,7 +5,8 @@ LIC_FILES_CHKSUM = "file://version.c;md5=811e1b67a5cd60c12b218a2b7c1adbf2"
 DEPENDS = "ncurses"
 SECTION = "console/editors"
 
-SRC_URI = "http://homepage.boetes.org/software/mg/mg-${PV}.tar.gz"
+SRC_URI = "http://homepage.boetes.org/software/mg/mg-${PV}.tar.gz \
+           file://remove_ncurses_check.patch"
 
 SRC_URI[md5sum] = "2de35316fa8ebafe6003efaae70b723e"
 SRC_URI[sha256sum] = "1cd37d7e6a3eecc890a5718c38b8f38495057ba93856762a756ccee2f9618229"
-- 
2.0.4