diff --git a/cmake/Findargp.cmake b/cmake/Findargp.cmake
new file mode 100644
index 0000000..2992977
--- /dev/null
+++ b/cmake/Findargp.cmake
@@ -0,0 +1,86 @@
+# This file is part of CMake-argp.
+#
+# CMake-argp is free software: you can redistribute it and/or modify it under
+# the terms of the GNU Lesser General Public License as published by the Free
+# Software Foundation, either version 3 of the License, or (at your option) any
+# later version.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License along
+# with this program. If not, see
+#
+#  http://www.gnu.org/licenses/
+#
+#
+# Copyright (c)
+#   2016-2017 Alexander Haase <ahaase@alexhaase.de>
+#
+
+include(CheckFunctionExists)
+include(FindPackageHandleStandardArgs)
+include(FindPackageMessage)
+
+
+# Do the following checks for header, library and argp functions quietly. Only
+# print the result at the end of this file.
+set(CMAKE_REQUIRED_QUIET TRUE)
+
+
+# First check if argp is shipped together with libc without linking to any other
+# library or including any paths. In that case, no files for argp need to be
+# searched and argp may be used out-of-the-box.
+check_function_exists("argp_parse" ARGP_IN_LIBC)
+if (ARGP_IN_LIBC)
+	# Set the argp library- and include-paths to empty values, otherwise CMake
+	# might print warnings about unknown variables and fills them with
+	# 'xy-NOTFOUND'.
+	set(ARGP_FOUND TRUE)
+	set(ARGP_LIBRARIES "")
+	set(ARGP_INCLUDE_PATH "")
+
+	# Print a message, that argp has been successfully found and return from
+	# this module, as argp doesn't need to be searched as a separate library.
+	find_package_message(argp "Found argp: built-in" "built-in")
+	return()
+endif()
+
+
+# Argp is not part of the libc, so it needs to be searched as a separate library
+# with its own include directory.
+#
+# First search the argp header file. If it is not found, any further steps will
+# fail.
+find_path(ARGP_INCLUDE_PATH "argp.h")
+if (ARGP_INCLUDE_PATH)
+    # Try to find the argp library and check if it has the required argp_parse
+    # function.
+	set(CMAKE_REQUIRED_INCLUDES "${ARGP_INCLUDE_PATH}")
+    find_library(ARGP_LIBRARIES "argp")
+
+    # Check if argp_parse is available. Some implementations don't have this
+    # symbol defined, thus they're not compatible.
+    if (ARGP_LIBRARIES)
+        set(CMAKE_REQUIRED_LIBRARIES "${ARGP_LIBRARIES}")
+        check_function_exists("argp_parse" ARGP_EXTERNAL)
+        if (NOT ARGP_EXTERNAL)
+            message(FATAL_ERROR "Your system ships an argp library in "
+                    "${ARGP_LIBRARIES}, but it does not have a symbol "
+                    "named argp_parse.")
+        endif ()
+    endif ()
+endif ()
+
+
+# Restore the quiet settings. By default the last check should be printed if not
+# disabled in the find_package call.
+set(CMAKE_REQUIRED_QUIET ${argp_FIND_QUIETLY})
+
+
+# Check for all required variables.
+find_package_handle_standard_args(argp
+	DEFAULT_MSG
+	ARGP_LIBRARIES ARGP_INCLUDE_PATH)
+mark_as_advanced(ARGP_LIBRARIES ARGP_INCLUDE_PATH)