avoid unecessary call to package manager (#25400)

When building for an OS different from Linux, FreeBSD or SunOS, don't try to call a sytem package manager. It may actually install a useless GLU system library (ie unrelated to host OS) when build machine is Linux, FreeBSD or SunOS.

recipes/glu/all/conanfile.py

@@ -29,6 +29,9 @@ def package_id(self):
         self.info.clear()
 
     def system_requirements(self):
+        if self.settings.os not in ["Linux", "FreeBSD", "SunOS"]:
+            return
+
         dnf = package_manager.Dnf(self)
         dnf.install(["mesa-libGLU-devel"], update=True, check=True)
 
@@ -47,13 +50,16 @@ def system_requirements(self):
         pkg = package_manager.Pkg(self)
         pkg.install(["libGLU"], update=True, check=True)
 
+        pkg_util = package_manager.PkgUtil(self)
+        pkg_util.install(["mesalibs"], update=True, check=True)
+
     def package_info(self):
         self.cpp_info.bindirs = []
         self.cpp_info.includedirs = []
         self.cpp_info.libdirs = []
 
         if self.settings.os == "Windows":
             self.cpp_info.system_libs = ["glu32"]
-        elif self.settings.os in ["Linux", "FreeBSD"]:
+        elif self.settings.os in ["Linux", "FreeBSD", "SunOS"]:
             pkg_config = PkgConfig(self, 'glu')
             pkg_config.fill_cpp_info(self.cpp_info, is_system=self.settings.os != "FreeBSD")