Remove deprecated conan generator

Signed-off-by: Enwei Jiao <[email protected]>

CMakeLists.txt

@@ -91,7 +91,6 @@ find_package(nlohmann_json REQUIRED)
 find_package(glog REQUIRED)
 find_package(prometheus-cpp REQUIRED)
 find_package(fmt REQUIRED)
-include_directories(${fmt_INCLUDE_DIR})
 set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_OSX_DEPLOYMENT_TARGET "10.13" CACHE STRING "Minimum OS X deployment version" FORCE)
 
@@ -137,6 +136,7 @@ list(APPEND KNOWHERE_LINKER_LIBS faiss)
 list(APPEND KNOWHERE_LINKER_LIBS glog::glog)
 list(APPEND KNOWHERE_LINKER_LIBS nlohmann_json::nlohmann_json)
 list(APPEND KNOWHERE_LINKER_LIBS prometheus-cpp::core prometheus-cpp::push)
+list(APPEND KNOWHERE_LINKER_LIBS fmt::fmt-header-only)
 list(APPEND KNOWHERE_LINKER_LIBS ${FOLLY_LIBRARIES})
 
 add_library(knowhere SHARED ${KNOWHERE_SRCS})

cmake/libs/libdiskann.cmake

@@ -28,6 +28,7 @@ target_link_libraries(diskann PUBLIC ${AIO_LIBRARIES}
                                      ${DISKANN_BOOST_PROGRAM_OPTIONS_LIB}
                                      nlohmann_json::nlohmann_json
                                      Folly::folly
+                                     fmt::fmt-header-only
                                      glog::glog)
 if(__X86_64)
   target_compile_options(

conanfile.py

@@ -4,6 +4,7 @@
 from conan.tools import files
 from conan import ConanFile
 from conan.tools.cmake import CMake, CMakeDeps, CMakeToolchain, cmake_layout
+from conan.tools.gnu import PkgConfigDeps
 from conan.errors import ConanInvalidConfiguration
 from conans import tools
 import os
@@ -19,8 +20,6 @@ class KnowhereConan(ConanFile):
     homepage = "https://github.com/milvus-io/knowhere"
     license = "Apache-2.0"
 
-    generators = {"pkg_config","cmake_find_package"}
-
     settings = "os", "arch", "compiler", "build_type"
     options = {
         "shared": [True, False],
@@ -157,9 +156,13 @@ def generate(self):
         tc.variables["WITH_BENCHMARK"] = self.options.with_benchmark
         tc.variables["WITH_COVERAGE"] = self.options.with_coverage
         tc.generate()
+
         deps = CMakeDeps(self)
         deps.generate()
 
+        pc = PkgConfigDeps(self)
+        pc.generate()
+
     def build(self):
         # files.apply_conandata_patches(self)
         cmake = CMake(self)