third_party_nghttp2/cmake/FindLibev.cmake
Peter Wu cc92ebf471 cmake: add auto-detection, improve library search
Add auto-detection to the most important features (app, hpack, etc.).
Move options to a separate file for easier search.

Add cmake-based Libevent, jansson and CUnit search. Move pkg-config
handling for Libev and jemalloc to their cmake files.

Note: duplicates find_package before including CMakeOptions.txt and when
checking for features. Maybe that can be cleaned up later...
2016-02-15 01:12:07 +01:00

39 lines
1.3 KiB
CMake

# - Try to find libev
# Once done this will define
# LIBEV_FOUND - System has libev
# LIBEV_INCLUDE_DIRS - The libev include directories
# LIBEV_LIBRARIES - The libraries needed to use libev
find_path(LIBEV_INCLUDE_DIR
NAMES ev.h
)
find_library(LIBEV_LIBRARY
NAMES ev
)
if(LIBEV_INCLUDE_DIR)
file(STRINGS "${LIBEV_INCLUDE_DIR}/ev.h"
LIBEV_VERSION_MAJOR REGEX "^#define[ \t]+EV_VERSION_MAJOR[ \t]+[0-9]+")
file(STRINGS "${LIBEV_INCLUDE_DIR}/ev.h"
LIBEV_VERSION_MINOR REGEX "^#define[ \t]+EV_VERSION_MINOR[ \t]+[0-9]+")
string(REGEX REPLACE "[^0-9]+" "" LIBEV_VERSION_MAJOR "${LIBEV_VERSION_MAJOR}")
string(REGEX REPLACE "[^0-9]+" "" LIBEV_VERSION_MINOR "${LIBEV_VERSION_MINOR}")
set(LIBEV_VERSION "${LIBEV_VERSION_MAJOR}.${LIBEV_VERSION_MINOR}")
unset(LIBEV_VERSION_MINOR)
unset(LIBEV_VERSION_MAJOR)
endif()
include(FindPackageHandleStandardArgs)
# handle the QUIETLY and REQUIRED arguments and set LIBEV_FOUND to TRUE
# if all listed variables are TRUE and the requested version matches.
find_package_handle_standard_args(Libev REQUIRED_VARS
LIBEV_LIBRARY LIBEV_INCLUDE_DIR
VERSION_VAR LIBEV_VERSION)
if(LIBEV_FOUND)
set(LIBEV_LIBRARIES ${LIBEV_LIBRARY})
set(LIBEV_INCLUDE_DIRS ${LIBEV_INCLUDE_DIR})
endif()
mark_as_advanced(LIBEV_INCLUDE_DIR LIBEV_LIBRARY)