reduce unnecessary dependencies

Box2D.spec

@@ -1,7 +1,7 @@
 %global __cmake_in_source_build 1
 Name: Box2D
 Version:  2.4.1
-Release:  3%{?dist}
+Release:  4%{?dist}
 Summary: A 2D Physics Engine for Games
 
 License: zlib
@@ -9,7 +9,7 @@ URL: http://box2d.org/
 Source0: https://github.com/erincatto/box2d/archive/v%{version}/%{name}-%{version}.tar.gz
 BuildRequires:  gcc
 BuildRequires:  gcc-c++
-BuildRequires: cmake libXi-devel glew-devel glfw-devel
+BuildRequires: cmake
 BuildRequires: make
 
 %package devel
@@ -32,9 +32,10 @@ These are the development files.
 
 %prep
 %setup -qn box2d-%{version}
+rm -r extern
 
 %build
-%cmake -DBOX2D_INSTALL=ON -DBOX2D_BUILD_SHARED=ON .
+%cmake -DBOX2D_INSTALL=ON -DBOX2D_BUILD_SHARED=ON -DBOX2D_BUILD_TESTBED=OFF .
 %cmake_build
 
 %install
@@ -53,6 +54,9 @@ These are the development files.
 %{_libdir}/cmake/box2d/*.cmake
 
 %changelog
+* Wed Feb 17 2021 Caolán McNamara <caolanm@redhat.com> - 2.4.1-4
+- reduce unnecessary dependencies
+
 * Wed Feb 10 2021 Timm Bäder <tbaeder@redhat.com> - 2.4.1-3
 - Use make macros