- Add patch to fix build with GCC 10 bsc#1160391:

* gcc10.patch

OBS-URL: https://build.opensuse.org/package/show/devel:libraries:c_c++/freeglut?expand=0&rev=26

freeglut.changes

@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Mon Mar  2 12:40:01 UTC 2020 - Tomáš Chvátal <tchvatal@suse.com>
+
+- Add patch to fix build with GCC 10 bsc#1160391:
+  * gcc10.patch
+
 -------------------------------------------------------------------
 Thu Jan  9 08:04:16 UTC 2020 - Tomáš Chvátal <tchvatal@suse.com>
 

freeglut.spec

@@ -26,6 +26,7 @@ URL:            http://freeglut.sourceforge.net/
 Source:         https://downloads.sourceforge.net/project/freeglut/%{name}/%{version}/%{name}-%{version}.tar.gz
 Source1:        https://downloads.sourceforge.net/openglut/openglut-0.6.3-doc.tar.gz
 Source2:        baselibs.conf
+Patch0:         gcc10.patch
 BuildRequires:  cmake
 BuildRequires:  gcc-c++
 BuildRequires:  pkgconfig
@@ -107,6 +108,7 @@ joystick functions on a wide range of platforms.
 
 %prep
 %setup -q -a1
+%patch0 -p3
 
 %build
 %cmake \

gcc10.patch

@@ -0,0 +1,66 @@
+From b9998bbc1e1c329f6bf69c24606a2be7a4973b8c Mon Sep 17 00:00:00 2001
+From: jtsiomb <jtsiomb@7f0cb862-5218-0410-a997-914c9d46530a>
+Date: Fri, 21 Feb 2020 22:25:31 +0000
+Subject: [PATCH] Work-around for an issue which cropped up with the release of
+ gcc-10. In their infinite wisdom, they decided to build with -fno-common as
+ default from now on, breaking every piece of C code which used to declare
+ common symbols in header files, as was the convention since the dawn of time.
+ We now have to duplicate all declarations to an arbitrary source file, and
+ change the header-file ones to prefix them with extern.
+
+git-svn-id: https://svn.code.sf.net/p/freeglut/code/trunk@1863 7f0cb862-5218-0410-a997-914c9d46530a
+---
+ freeglut/freeglut/src/fg_gl2.c | 14 ++++++++++++++
+ freeglut/freeglut/src/fg_gl2.h | 14 +++++++-------
+ 2 files changed, 21 insertions(+), 7 deletions(-)
+
+diff --git a/freeglut/freeglut/src/fg_gl2.c b/freeglut/freeglut/src/fg_gl2.c
+index 38b0acbb..54b4285b 100644
+--- a/freeglut/freeglut/src/fg_gl2.c
++++ b/freeglut/freeglut/src/fg_gl2.c
+@@ -27,6 +27,20 @@
+ #include "fg_internal.h"
+ #include "fg_gl2.h"
+ 
++#ifndef GL_ES_VERSION_2_0
++/* GLES2 has the corresponding entry points built-in, and these fgh-prefixed
++ * names are defined in fg_gl2.h header to reference them, for any other case,
++ * define them as function pointers here.
++ */
++FGH_PFNGLGENBUFFERSPROC fghGenBuffers;
++FGH_PFNGLDELETEBUFFERSPROC fghDeleteBuffers;
++FGH_PFNGLBINDBUFFERPROC fghBindBuffer;
++FGH_PFNGLBUFFERDATAPROC fghBufferData;
++FGH_PFNGLENABLEVERTEXATTRIBARRAYPROC fghEnableVertexAttribArray;
++FGH_PFNGLDISABLEVERTEXATTRIBARRAYPROC fghDisableVertexAttribArray;
++FGH_PFNGLVERTEXATTRIBPOINTERPROC fghVertexAttribPointer;
++#endif
++
+ void FGAPIENTRY glutSetVertexAttribCoord3(GLint attrib) {
+   if (fgStructure.CurrentWindow != NULL)
+     fgStructure.CurrentWindow->Window.attribute_v_coord = attrib;
+diff --git a/freeglut/freeglut/src/fg_gl2.h b/freeglut/freeglut/src/fg_gl2.h
+index ab8ba5c7..fb3d4676 100644
+--- a/freeglut/freeglut/src/fg_gl2.h
++++ b/freeglut/freeglut/src/fg_gl2.h
+@@ -67,13 +67,13 @@ typedef void (APIENTRY *FGH_PFNGLENABLEVERTEXATTRIBARRAYPROC) (GLuint index);
+ typedef void (APIENTRY *FGH_PFNGLDISABLEVERTEXATTRIBARRAYPROC) (GLuint);
+ typedef void (APIENTRY *FGH_PFNGLVERTEXATTRIBPOINTERPROC) (GLuint index, GLint size, GLenum type, GLboolean normalized, GLsizei stride, const GLvoid *pointer);
+ 
+-FGH_PFNGLGENBUFFERSPROC fghGenBuffers;
+-FGH_PFNGLDELETEBUFFERSPROC fghDeleteBuffers;
+-FGH_PFNGLBINDBUFFERPROC fghBindBuffer;
+-FGH_PFNGLBUFFERDATAPROC fghBufferData;
+-FGH_PFNGLENABLEVERTEXATTRIBARRAYPROC fghEnableVertexAttribArray;
+-FGH_PFNGLDISABLEVERTEXATTRIBARRAYPROC fghDisableVertexAttribArray;
+-FGH_PFNGLVERTEXATTRIBPOINTERPROC fghVertexAttribPointer;
++extern FGH_PFNGLGENBUFFERSPROC fghGenBuffers;
++extern FGH_PFNGLDELETEBUFFERSPROC fghDeleteBuffers;
++extern FGH_PFNGLBINDBUFFERPROC fghBindBuffer;
++extern FGH_PFNGLBUFFERDATAPROC fghBufferData;
++extern FGH_PFNGLENABLEVERTEXATTRIBARRAYPROC fghEnableVertexAttribArray;
++extern FGH_PFNGLDISABLEVERTEXATTRIBARRAYPROC fghDisableVertexAttribArray;
++extern FGH_PFNGLVERTEXATTRIBPOINTERPROC fghVertexAttribPointer;
+ 
+ #    endif
+