1 files changed, 41 insertions, 0 deletions
diff --git a/cmake/FindLibngtcp2.cmake b/cmake/FindLibngtcp2.cmake
new file mode 100644
index 0000000..c670114
--- /dev/null
+++ b/cmake/FindLibngtcp2.cmake
@@ -0,0 +1,41 @@
+# - 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)