glew: Fix glu and glx dependencies (#30705)

var/spack/repos/builtin/packages/glew/package.py

@@ -9,18 +9,24 @@ class Glew(CMakePackage):
 
     homepage = "http://glew.sourceforge.net/"
     url      = "https://github.com/nigels-com/glew/releases/download/glew-2.1.0/glew-2.1.0.tgz"
+    root_cmakelists_dir = "build/cmake"
 
+    version('2.2.0',  sha256='d4fc82893cfb00109578d0a1a2337fb8ca335b3ceccf97b97e5cc7f08e4353e1')
     version('2.1.0',  sha256='04de91e7e6763039bc11940095cd9c7f880baba82196a7765f727ac05a993c95')
     version('2.0.0',  sha256='c572c30a4e64689c342ba1624130ac98936d7af90c3103f9ce12b8a0c5736764')
 
-    depends_on("gl")  # glu is optional if -DGLEW_NO_GLU is used by dependents
-    depends_on('libsm')
-    depends_on('libice')
+    depends_on('gl')
+    depends_on('glx', when='platform=linux')
 
-    root_cmakelists_dir = "build/cmake"
+    # glu is already forcibly disabled in the CMakeLists.txt.  This prevents
+    # it from showing up in the .pc file
+    patch('remove-pkgconfig-glu-dep.patch')
 
-    @run_after('cmake')
-    def patch_glew_pc(self):
-        # https://github.com/Homebrew/legacy-homebrew/issues/22025
-        # Note: This file is generated only after cmake is run
-        filter_file(r'Requires: glu', '', 'glew.pc')
+    def cmake_args(self):
+        args = [
+            self.define('BUILD_UTILS', True),
+            self.define('GLEW_REGAL', False),
+            self.define('GLEW_OSMESA', False),
+        ]
+
+        return args

var/spack/repos/builtin/packages/glew/remove-pkgconfig-glu-dep.patch

@@ -0,0 +1,18 @@
+diff --git a/build/cmake/CMakeLists.txt b/build/cmake/CMakeLists.txt
+index 419c243..339617f 100644
+--- a/build/cmake/CMakeLists.txt
++++ b/build/cmake/CMakeLists.txt
+@@ -215,12 +215,7 @@ set (includedir ${CMAKE_INSTALL_FULL_INCLUDEDIR})
+ set (version ${GLEW_VERSION})
+ set (libname ${GLEW_LIB_NAME})
+ set (cflags)
+-set (requireslib glu)
+-
+-#  Mac OSX has no glu.pc unless optional X11/GLX is installed
+-if (APPLE)
+-  set (requireslib)
+-endif ()
++set (requireslib)
+ 
+ configure_file (${GLEW_DIR}/glew.pc.in ${CMAKE_CURRENT_BINARY_DIR}/glew.pc @ONLY)
+