zlib-ng: provide "zlib" in compatilibity mode

conan-io#19476

recipes/zlib-ng/all/conanfile.py

@@ -40,6 +40,8 @@ class ZlibNgConan(ConanFile):
         "with_reduced_mem": False,
     }
 
+    provides = []
+
     def config_options(self):
         if self.settings.os == "Windows":
             del self.options.fPIC
@@ -51,6 +53,8 @@ def configure(self):
             self.options.rm_safe("fPIC")
         self.settings.rm_safe("compiler.cppstd")
         self.settings.rm_safe("compiler.libcxx")
+        if self.options.zlib_compat:
+            self.provides.append("zlib")
 
     def layout(self):
         cmake_layout(self, src_folder="src")
@@ -106,6 +110,12 @@ def package_info(self):
             self.cpp_info.libs = [f"z{suffix}"]
         if self.options.zlib_compat:
             self.cpp_info.defines.append("ZLIB_COMPAT")
+            #copied from zlib
+            self.cpp_info.set_property("cmake_find_mode", "both")
+            self.cpp_info.set_property("cmake_file_name", "ZLIB")
+            self.cpp_info.set_property("cmake_target_name", "ZLIB::ZLIB")
+            self.cpp_info.names["cmake_find_package"] = "ZLIB"
+            self.cpp_info.names["cmake_find_package_multi"] = "ZLIB"
         if self.options.with_gzfileop:
             self.cpp_info.defines.append("WITH_GZFILEOP")
         if not self.options.with_new_strategies: