nghttp2/cmake/FindLibngtcp2.cmake

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2021-08-22 16:10:36 +02:00
# - Try to find libngtcp2
# Once done this will define
# LIBNGTCP2_FOUND - System has libngtcp2
# LIBNGTCP2_INCLUDE_DIRS - The libngtcp2 include directories
# LIBNGTCP2_LIBRARIES - The libraries needed to use libngtcp2
find_package(PkgConfig QUIET)
pkg_check_modules(PC_LIBNGTCP2 QUIET libngtcp2)
find_path(LIBNGTCP2_INCLUDE_DIR
NAMES ngtcp2/ngtcp2.h
HINTS ${PC_LIBNGTCP2_INCLUDE_DIRS}
)
find_library(LIBNGTCP2_LIBRARY
NAMES ngtcp2
HINTS ${PC_LIBNGTCP2_LIBRARY_DIRS}
)
if(LIBNGTCP2_INCLUDE_DIR)
set(_version_regex "^#define[ \t]+NGTCP2_VERSION[ \t]+\"([^\"]+)\".*")
file(STRINGS "${LIBNGTCP2_INCLUDE_DIR}/ngtcp2/version.h"
LIBNGTCP2_VERSION REGEX "${_version_regex}")
string(REGEX REPLACE "${_version_regex}" "\\1"
LIBNGTCP2_VERSION "${LIBNGTCP2_VERSION}")
unset(_version_regex)
endif()
include(FindPackageHandleStandardArgs)
# handle the QUIETLY and REQUIRED arguments and set LIBNGTCP2_FOUND
# to TRUE if all listed variables are TRUE and the requested version
# matches.
find_package_handle_standard_args(Libngtcp2 REQUIRED_VARS
LIBNGTCP2_LIBRARY LIBNGTCP2_INCLUDE_DIR
VERSION_VAR LIBNGTCP2_VERSION)
if(LIBNGTCP2_FOUND)
set(LIBNGTCP2_LIBRARIES ${LIBNGTCP2_LIBRARY})
set(LIBNGTCP2_INCLUDE_DIRS ${LIBNGTCP2_INCLUDE_DIR})
endif()
mark_as_advanced(LIBNGTCP2_INCLUDE_DIR LIBNGTCP2_LIBRARY)