AUR fswatch CMake find module

FindLibFsWatch.cmake

# - Try to find LibFswatch
# Once done this will define
#  LibFsWatch_FOUND - System has LibFswatch
#  LibFsWatch_INCLUDE_DIRS - The LibFswatch include directories
#  LibFsWatch_LIBRARIES - The libraries needed to use LibFswatch
#  LibFsWatch_DEFINITIONS - Compiler switches required for using LibFswatch

find_package(PkgConfig)
pkg_check_modules(PC_LIBFSWATCH QUIET libfswatch)
set(LibFsWatch_DEFINITIONS ${PC_LIBFSWATCH_CFLAGS_OTHER})
mark_as_advanced(LibFsWatch_DEFINITIONS)

# Look for necessary header
find_path(
  LibFsWatch_INCLUDE_DIR libfswatch/c++/event.hpp
  HINTS ${PC_LIBFSWATCH_INCLUDEDIR} ${PC_LIBFSWATCH_INCLUDE_DIRS}
  PATH_SUFFIXES libfswatch
)
mark_as_advanced(LibFsWatch_INCLUDE_DIR)

# Look for necessary library
find_library(
  LibFsWatch_LIBRARY NAMES fswatch libfswatch
  HINTS ${PC_LIBFSWATCH_LIBDIR} ${PC_LIBFSWATCH_LIBRARY_DIRS}
)
mark_as_advanced(LibFsWatch_LIBRARY)

# Extract version info from header
if(LibFsWatch_INCLUDE_DIR)
  file(
    STRINGS ${LibFsWatch_INCLUDE_DIR}/libfswatch/c++/event.hpp _ver_line
    REGEX "^[ \t\r\n]*\\*[ \t\r\n]*@version[ \t\r\n]*[0-9]+\\.[0-9]+\\.[0-9]+"
    LIMIT_COUNT 1
  )
  string(
    REGEX MATCH "[0-9]+\\.[0-9]+\\.[0-9]+"
    LibFsWatch_VERSION "${_ver_line}"
  )
  unset(_ver_line)
endif()

include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(
  LibFsWatch
  REQUIRED_VARS LibFsWatch_LIBRARY LibFsWatch_INCLUDE_DIR
  VERSION_VAR LibFsWatch_VERSION
)

if(LibFsWatch_FOUND)
  set(LibFsWatch_LIBRARIES ${LibFsWatch_LIBRARY})
  set(LibFsWatch_INCLUDE_DIRS ${LibFsWatch_INCLUDE_DIR})

  if(NOT TARGET LibFsWatch::LibFsWatch)
    add_library(LibFsWatch::LibFsWatch UNKNOWN IMPORTED)
    set_target_properties(
      LibFsWatch::LibFsWatch PROPERTIES
      IMPORTED_LOCATION "${LibFsWatch_LIBRARY}"
      INTERFACE_INCLUDE_DIRECTORIES "${LibFsWatch_INCLUDE_DIR}"
    )
  endif()
endif()

PKGBUILD

# Maintainer: Andrew Rabert <ar@nullsum.net>
# Contributor: Flaviu Tamas <aur@flaviutamas.com>

pkgname=fswatch
pkgver=1.17.0
pkgrel=1
pkgdesc="A cross-platform file change monitor with multiple backends: Apple OS X File System Events API, *BSD kqueue, Linux inotify, Microsoft Windows and a stat-based backend"
arch=("i686" "x86_64")
url="https://emcrisostomo.github.io/fswatch/"
license=('GPLv3')
source=("https://github.com/emcrisostomo/fswatch/releases/download/$pkgver/$pkgname-$pkgver.tar.gz"
            'FindLibFsWatch.cmake')
sha256sums=('988d9fca774eb9b2d1b3575ef56c5ce7fdcc718dbabaf727178651eac11bdabc'
            'abcd')

build() {
    cd "$pkgname-$pkgver"
    ./configure --prefix=/usr
    make
}

check() {
    cd "$pkgname-$pkgver"
    make -k check
}

package() {
    install -Dm 644 FindLibFsWatch.cmake "/usr/lib/cmake/${pkgname}/FindLibFsWatch.cmake"
    cd "$pkgname-$pkgver"
    make DESTDIR="$pkgdir/" install
}