1 # CLN_FOUND CLN has been successfully found
2 # CLN_INCLUDE_DIR the include directories
3 # CLN_LIBRARIES CLN library and its dependencies (if any)
5 if (CLN_INCLUDE_DIR AND CLN_LIBRARIES)
6 set(CLN_FIND_QUIETLY TRUE)
9 function(_cl_get_version _out_major _out_minor _out_patch _cl_version_h)
10 file(STRINGS ${_cl_version_h} _cl_vinfo REGEX "^#define[\t ]+CL_VERSION_.*")
12 message(FATAL_ERROR "include file ${_cl_version_h} does not exist")
14 string(REGEX REPLACE "^.*CL_VERSION_MAJOR[ \t]+([0-9]+).*" "\\1" ${_out_major} "${_cl_vinfo}")
15 string(REGEX REPLACE "^.*CL_VERSION_MINOR[ \t]+([0-9]+).*" "\\1" ${_out_minor} "${_cl_vinfo}")
16 string(REGEX REPLACE "^.*CL_VERSION_PATCHLEVEL[ \t]+([0-9]+).*" "\\1" ${_out_patch} "${_cl_vinfo}")
17 if (NOT ${_out_major} MATCHES "[0-9]+")
18 message(FATAL_ERROR "failed to determine CL_VERSION_MAJOR, "
19 "expected a number, got ${${_out_major}}")
21 if (NOT ${_out_minor} MATCHES "[0-9]+")
22 message(FATAL_ERROR "failed to determine CL_VERSION_MINOR, "
23 "expected a number, got ${${_out_minor}}")
25 if (NOT ${_out_patch} MATCHES "[0-9]+")
26 message(FATAL_ERROR "failed to determine CL_VERSION_PATCHLEVEL, "
27 "expected a number, got ${${_out_patch}}")
29 message(STATUS "found CLN [${_cl_version_h}], version ${${_out_major}}.${${_out_minor}}.${${_out_patch}}")
30 set(${_out_major} ${${_out_major}} PARENT_SCOPE)
31 set(${_out_minor} ${${_out_minor}} PARENT_SCOPE)
32 set(${_out_patch} ${${_out_patch}} PARENT_SCOPE)
39 include(FindPkgConfig)
41 pkg_check_modules(_cln cln)
44 find_path(CLN_INCLUDE_DIR NAMES cln/cln.h
45 HINTS ${_cln_INCLUDE_DIRS}
46 $ENV{CLN_DIR}/include)
47 find_library(CLN_LIBRARIES NAMES libcln cln
48 HINTS ${_cln_LIBRARY_DIR}
53 _cl_get_version(CLN_VERSION_MAJOR
55 CLN_VERSION_PATCHLEVEL
56 ${CLN_INCLUDE_DIR}/cln/version.h)
57 set(CLN_VERSION ${CLN_VERSION_MAJOR}.${CLN_VERSION_MINOR}.${CLN_VERSION_PATCHLEVEL})
58 # Check if the version reported by pkg-config is the same
59 # as the one read from the header. This prevents us from
60 # picking the wrong version of CLN (say, if several versions
62 if (_cln_FOUND AND NOT CLN_VERSION VERSION_EQUAL _cln_VERSION)
63 if (NOT CLN_FIND_QUIETLY)
64 message(ERROR "pkg-config and version.h disagree, "
65 "${_cln_VERSION} vs ${CLN_VERSION}, "
66 "please check your installation")
68 set(CLN_LIBRARIES CLN-NOTFOUND)
69 set(CLN_INCLUDE_DIR CLN-NOTFOUND)
75 # Check if the version embedded into the library is the same as the one in the headers.
76 if (CLN_INCLUDE_DIR AND CLN_LIBRARIES AND NOT CMAKE_CROSSCOMPILING)
77 include(CheckCXXSourceRuns)
78 set(_save_required_includes ${CMAKE_REQUIRED_INCLUDES})
79 set(_save_required_libraries ${CMAKE_REQUIRED_LIBRARIES})
80 set(CMAKE_REQUIRED_INCLUDES ${CMAKE_REQUIRED_INCLUDES} ${CLN_INCLUDE_DIR})
81 set(CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES} ${CLN_LIBRARIES})
82 check_cxx_source_runs("
83 #include <cln/version.h>
85 return (CL_VERSION_MAJOR == cln::version_major) &&
86 (CL_VERSION_MINOR == cln::version_minor) &&
87 (CL_VERSION_PATCHLEVEL == cln::version_patchlevel) ? 0 : 1;
91 set(CMAKE_REQUIRED_LIBRARIES ${_save_required_libraries})
92 set(CMAKE_REQUIRED_INCLUDES ${_save_required_includes})
93 if (NOT _cl_version_matches)
94 if (NOT CLN_FIND_QUIETLY)
95 message(ERROR "header (version differs from the library one, "
96 "please check your installation.")
98 set(CLN_INCLUDE_DIR CLN-NOTFOUND)
99 set(CLN_LIBRARIES CLN-NOTFOUND)
100 set(CLN_LIBRARY_DIRS)
105 if (CLN_LIBRARIES AND CLN_INCLUDE_DIR)
106 set(_cln_library_dirs)
107 foreach(_l ${CLN_LIBRARIES})
108 get_filename_component(_d "${_l}" PATH)
109 list(APPEND _cln_library_dirs "${_d}")
111 list(REMOVE_DUPLICATES _cln_library_dirs)
112 set(CLN_LIBRARY_DIRS ${_cln_library_dirs})
115 include(FindPackageHandleStandardArgs)
116 FIND_PACKAGE_HANDLE_STANDARD_ARGS(CLN REQUIRED_VARS CLN_LIBRARIES CLN_INCLUDE_DIR
117 VERSION_VAR CLN_VERSION)