update README, add build-essentials and ubuntu version detection

1 files changed, 23 insertions, 3 deletions

diff --git a/scripts/ubuntu-build-dependencies.sh b/scripts/ubuntu-build-dependencies.sh
index 8662043..912ba80 100755
--- a/scripts/ubuntu-build-dependencies.sh
+++ b/scripts/ubuntu-build-dependencies.sh
@@ -1,5 +1,25 @@
+
+too_old()
+{
+	echo "System version too low. Please try 'old linux' build (see README.md)"
+}
+
+if [ "`cat /etc/issue | grep 'Ubunutu 10'`" ]; then
+	too_old
+fi
+if [ "`cat /etc/issue | grep 'Ubunutu 9'`" ]; then
+	too_old
+fi
+if [ "`cat /etc/issue | grep 'Ubunutu 8'`" ]; then
+	too_old
+fi
+if [ "`cat /etc/issue | grep 'Ubunutu 7'`" ]; then
+	too_old
+fi
+
 echo "tested on Ubuntu 12. If this fails try 'old linux' build (see README.md)"
 
+
 if [ "`dpkg --list | grep -i cgal`" ]; then
 	echo "Please make sure you have run apt-get purge on all cgal packages"
   exit
@@ -10,9 +30,9 @@ if [ "`dpkg --list | grep -i opencsg`" ]; then
   exit
 fi
 
-sudo apt-get install libqt4-dev libqt4-opengl-dev libxmu-dev cmake \
- bison flex libeigen2-dev git-core libboost-all-dev libXi-dev libmpfr-dev \
- libgmp-dev libboost-dev libglew1.6-dev
+sudo apt-get install build-essential libqt4-dev libqt4-opengl-dev \
+ libxmu-dev cmake bison flex libeigen2-dev git-core libboost-all-dev \
+ libXi-dev libmpfr-dev libgmp-dev libboost-dev libglew1.6-dev
 
 echo "now copy/paste the following to install CGAL and OpenCSG from source:"
 echo "sudo BASEDIR=/usr/local ./scripts/linux-build-dependencies.sh cgal-use-sys-libs"