refactor(build): use find_package when possible

Signed-off-by: Gianmatteo Palmieri <[email protected]>

Author: mrgian

cmake/modules/cpp-httplib.cmake

@@ -21,13 +21,8 @@ option(USE_BUNDLED_CPPHTTPLIB "Enable building of the bundled cpp-httplib" ${USE
 if(CPPHTTPLIB_INCLUDE)
     # we already have cpp-httplib
 elseif(NOT USE_BUNDLED_CPPHTTPLIB)
-    find_path(CPPHTTPLIB_INCLUDE NAMES httplib.h)
-
-    if(CPPHTTPLIB_INCLUDE)
-        message(STATUS "Found cpp-httplib: include: ${CPPHTTPLIB_INCLUDE}")
-    else()
-        message(FATAL_ERROR "Couldn't find system cpp-httplib")
-    endif()
+    find_package(httplib CONFIG REQUIRED)
+    get_target_property(CPPHTTPLIB_INCLUDE httplib::httplib INTERFACE_INCLUDE_DIRECTORIES)
 else()
     set(CPPHTTPLIB_SRC "${PROJECT_BINARY_DIR}/cpp-httplib-prefix/src/cpp-httplib")
     set(CPPHTTPLIB_INCLUDE "${CPPHTTPLIB_SRC}")

cmake/modules/cxxopts.cmake

@@ -21,13 +21,8 @@ option(USE_BUNDLED_CXXOPTS "Enable building of the bundled cxxopts" ${USE_BUNDLE
 if(CXXOPTS_INCLUDE_DIR)
     # we already have cxxopts
 elseif(NOT USE_BUNDLED_CXXOPTS)
-    find_path(CXXOPTS_INCLUDE_DIR NAMES cxxopts.hpp)
-
-    if(CXXOPTS_INCLUDE_DIR)
-        message(STATUS "Found cxxopts: include: ${CXXOPTS_INCLUDE_DIR}")
-    else()
-        message(FATAL_ERROR "Couldn't find system cxxopts")
-    endif()
+    find_package(cxxopts CONFIG REQUIRED)
+    get_target_property(CXXOPTS_INCLUDE_DIR cxxopts::cxxopts INTERFACE_INCLUDE_DIRECTORIES)
 else()
     set(CXXOPTS_SRC "${PROJECT_BINARY_DIR}/cxxopts-prefix/src/cxxopts/")
     set(CXXOPTS_INCLUDE_DIR "${CXXOPTS_SRC}/include")

cmake/modules/njson.cmake

@@ -21,13 +21,8 @@ option(USE_BUNDLED_NLOHMANN_JSON "Enable building of the bundled nlohmann-json"
 if(nlohmann_json_INCLUDE_DIRS)
     # we already have nlohmnann-json
 elseif(NOT USE_BUNDLED_NLOHMANN_JSON)
-    find_path(nlohmann_json_INCLUDE_DIRS NAMES nlohmann)
-
-    if(nlohmann_json_INCLUDE_DIRS)
-        message(STATUS "Found nlohmann-json: include: ${nlohmann_json_INCLUDE_DIRS}")
-    else()
-        message(FATAL_ERROR "Couldn't find system nlohmann-json")
-    endif()
+    find_package(nlohmann_json CONFIG REQUIRED)
+    get_target_property(nlohmann_json_INCLUDE_DIRS nlohmann_json::nlohmann_json INTERFACE_INCLUDE_DIRECTORIES)
 else()
     set(nlohmann_json_INCLUDE_DIRS "${PROJECT_BINARY_DIR}/njson-prefix/include")