2010-08-11 James Hawkins <jhawkins@chromium.org>
[WebKit-https.git] / cmake / FindICU.cmake
1 # Finds the International Components for Unicode (ICU) Library
2 #
3 #  ICU_FOUND          - True if ICU found.
4 #  ICU_I18N_FOUND     - True if ICU's internationalization library found.
5 #  ICU_INCLUDE_DIRS   - Directory to include to get ICU headers
6 #                       Note: always include ICU headers as, e.g.,
7 #                       unicode/utypes.h
8 #  ICU_LIBRARIES      - Libraries to link against for the common ICU
9 #  ICU_I18N_LIBRARIES - Libraries to link against for ICU internationaliation
10 #                       (note: in addition to ICU_LIBRARIES)
11
12 # Look for the header file.
13 FIND_PATH(
14     ICU_INCLUDE_DIR
15     NAMES unicode/utypes.h
16     DOC "Include directory for the ICU library")
17 MARK_AS_ADVANCED(ICU_INCLUDE_DIR)
18
19 # Look for the library.
20 FIND_LIBRARY(
21     ICU_LIBRARY
22     NAMES icuuc cygicuuc cygicuuc32
23     DOC "Libraries to link against for the common parts of ICU")
24 MARK_AS_ADVANCED(ICU_LIBRARY)
25
26 # Copy the results to the output variables.
27 IF (ICU_INCLUDE_DIR AND ICU_LIBRARY)
28     SET(ICU_FOUND 1)
29     SET(ICU_LIBRARIES ${ICU_LIBRARY})
30     SET(ICU_INCLUDE_DIRS ${ICU_INCLUDE_DIR})
31
32     SET(ICU_VERSION 0)
33     SET(ICU_MAJOR_VERSION 0)
34     SET(ICU_MINOR_VERSION 0)
35     FILE(READ "${ICU_INCLUDE_DIR}/unicode/uversion.h" _ICU_VERSION_CONENTS)
36     STRING(REGEX REPLACE ".*#define U_ICU_VERSION_MAJOR_NUM ([0-9]+).*" "\\1" ICU_MAJOR_VERSION "${_ICU_VERSION_CONENTS}")
37     STRING(REGEX REPLACE ".*#define U_ICU_VERSION_MINOR_NUM ([0-9]+).*" "\\1" ICU_MINOR_VERSION "${_ICU_VERSION_CONENTS}")
38
39     SET(ICU_VERSION "${ICU_MAJOR_VERSION}.${ICU_MINOR_VERSION}")
40
41     # Look for the ICU internationalization libraries
42     FIND_LIBRARY(
43         ICU_I18N_LIBRARY
44         NAMES icuin icui18n cygicuin cygicuin32
45         DOC "Libraries to link against for ICU internationalization")
46     MARK_AS_ADVANCED(ICU_I18N_LIBRARY)
47     IF (ICU_I18N_LIBRARY)
48         SET(ICU_I18N_FOUND 1)
49         SET(ICU_I18N_LIBRARIES ${ICU_I18N_LIBRARY})
50     ELSE ()
51         SET(ICU_I18N_FOUND 0)
52         SET(ICU_I18N_LIBRARIES)
53     ENDIF ()
54 ELSE ()
55     SET(ICU_FOUND 0)
56     SET(ICU_I18N_FOUND 0)
57     SET(ICU_LIBRARIES)
58     SET(ICU_I18N_LIBRARIES)
59     SET(ICU_INCLUDE_DIRS)
60     SET(ICU_VERSION)
61     SET(ICU_MAJOR_VERSION)
62     SET(ICU_MINOR_VERSION)
63 ENDIF ()
64
65 IF (ICU_FOUND)
66     IF (NOT ICU_FIND_QUIETLY)
67         MESSAGE(STATUS "Found ICU header files in ${ICU_INCLUDE_DIRS}")
68         MESSAGE(STATUS "Found ICU libraries: ${ICU_LIBRARIES}")
69     ENDIF ()
70 ELSE ()
71     IF (ICU_FIND_REQUIRED)
72         MESSAGE(FATAL_ERROR "Could not find ICU")
73     ELSE ()
74         MESSAGE(STATUS "Optional package ICU was not found")
75     ENDIF ()
76 ENDIF ()
77