1 files changed, 43 insertions, 0 deletions
diff --git a/cmake/FindLibngtcp2_crypto_openssl.cmake b/cmake/FindLibngtcp2_crypto_openssl.cmake
new file mode 100644
index 0000000..8df7859
--- /dev/null
+++ b/cmake/FindLibngtcp2_crypto_openssl.cmake
@@ -0,0 +1,43 @@
+# - Try to find libngtcp2_crypto_openssl
+# Once done this will define
+#  LIBNGTCP2_CRYPTO_OPENSSL_FOUND        - System has libngtcp2_crypto_openssl
+#  LIBNGTCP2_CRYPTO_OPENSSL_INCLUDE_DIRS - The libngtcp2_crypto_openssl include directories
+#  LIBNGTCP2_CRYPTO_OPENSSL_LIBRARIES    - The libraries needed to use libngtcp2_crypto_openssl
+
+find_package(PkgConfig QUIET)
+pkg_check_modules(PC_LIBNGTCP2_CRYPTO_OPENSSL QUIET libngtcp2_crypto_openssl)
+
+find_path(LIBNGTCP2_CRYPTO_OPENSSL_INCLUDE_DIR
+  NAMES ngtcp2/ngtcp2_crypto_openssl.h
+  HINTS ${PC_LIBNGTCP2_CRYPTO_OPENSSL_INCLUDE_DIRS}
+)
+find_library(LIBNGTCP2_CRYPTO_OPENSSL_LIBRARY
+  NAMES ngtcp2_crypto_openssl
+  HINTS ${PC_LIBNGTCP2_CRYPTO_OPENSSL_LIBRARY_DIRS}
+)
+
+if(LIBNGTCP2_CRYPTO_OPENSSL_INCLUDE_DIR)
+  set(_version_regex "^#define[ \t]+NGTCP2_VERSION[ \t]+\"([^\"]+)\".*")
+  file(STRINGS "${LIBNGTCP2_CRYPTO_OPENSSL_INCLUDE_DIR}/ngtcp2/version.h"
+    LIBNGTCP2_CRYPTO_OPENSSL_VERSION REGEX "${_version_regex}")
+  string(REGEX REPLACE "${_version_regex}" "\\1"
+    LIBNGTCP2_CRYPTO_OPENSSL_VERSION "${LIBNGTCP2_CRYPTO_OPENSSL_VERSION}")
+  unset(_version_regex)
+endif()
+
+include(FindPackageHandleStandardArgs)
+# handle the QUIETLY and REQUIRED arguments and set
+# LIBNGTCP2_CRYPTO_OPENSSL_FOUND to TRUE if all listed variables are
+# TRUE and the requested version matches.
+find_package_handle_standard_args(Libngtcp2_crypto_openssl REQUIRED_VARS
+                                  LIBNGTCP2_CRYPTO_OPENSSL_LIBRARY
+                                  LIBNGTCP2_CRYPTO_OPENSSL_INCLUDE_DIR
+                                  VERSION_VAR LIBNGTCP2_CRYPTO_OPENSSL_VERSION)
+
+if(LIBNGTCP2_CRYPTO_OPENSSL_FOUND)
+  set(LIBNGTCP2_CRYPTO_OPENSSL_LIBRARIES ${LIBNGTCP2_CRYPTO_OPENSSL_LIBRARY})
+  set(LIBNGTCP2_CRYPTO_OPENSSL_INCLUDE_DIRS ${LIBNGTCP2_CRYPTO_OPENSSL_INCLUDE_DIR})
+endif()
+
+mark_as_advanced(LIBNGTCP2_CRYPTO_OPENSSL_INCLUDE_DIR
+                 LIBNGTCP2_CRYPTO_OPENSSL_LIBRARY)