1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
|
# - Find AWK binary
# Find the native AWK executable
#
# AWK_BIN - AWK executable
# AWK_VERSION - AWK version (first line of output of "${AWK_BIN} -W version")
# AWK_FOUND - TRUE if AWK binary was found.
INCLUDE(FindPackageHandleStandardArgs)
if (AWK_BIN)
# Already in cache, be silent
SET(AWK_FIND_QUIETLY TRUE)
endif ()
SET(AWK_NAMES awk gawk mawk nawk)
if (CMAKE_HOST_WIN32)
set(AWK_BIN "${MINGWLIBS}/bin/awk.exe")
if (NOT EXISTS AWK_BIN)
find_program(AWK_BIN NAMES ${AWK_NAMES})
endif ()
else ()
find_program(AWK_BIN NAMES ${AWK_NAMES})
endif ()
# Handle the QUIETLY and REQUIRED arguments and set AWK_FOUND to TRUE
# if AWK_BIN is valid
FIND_PACKAGE_HANDLE_STANDARD_ARGS(AWK DEFAULT_MSG AWK_BIN)
if (AWK_FOUND)
# Try to fetch the AWK version
#
# There are different ways of doing this, and not all implementations
# support all of them. What is worse: none of the ways is supported by all
# implementations. :/
#
# Common Implementations:
# * GAWK: linux (& windows) standard
# * MAWK: gentoo
# * BWK: OS X & BSDs (announces itsself just as "awk version 20070501")
# more info: http://en.wikipedia.org/wiki/AWK#Versions_and_implementations
#
# a) awk -Wv (the standard, not supported by BWK)
# b) awk -W version (less standard, more verbose version of the above)
# c) awk --version (works for BWK and GAWK)
# d) awk -version (works for BWK)
#
# So we first try a) and if output is "", we try c)
#
EXECUTE_PROCESS(COMMAND ${AWK_BIN} -Wv
RESULT_VARIABLE RET_VAL
OUTPUT_VARIABLE AWK_VERSION
ERROR_QUIET
OUTPUT_STRIP_TRAILING_WHITESPACE)
if ( NOT${RET_VAL} EQUAL 0 OR AWK_VERSION STREQUAL "")
EXECUTE_PROCESS(COMMAND ${AWK_BIN} --version
RESULT_VARIABLE RET_VAL
OUTPUT_VARIABLE AWK_VERSION
ERROR_QUIET
OUTPUT_STRIP_TRAILING_WHITESPACE)
endif ()
if (${RET_VAL} EQUAL 0)
# reduce to first line
String(REGEX REPLACE "\n.*" "" AWK_VERSION "${AWK_VERSION}")
if (NOT AWK_FIND_QUIETLY)
message (STATUS "AWK version: ${AWK_VERSION}")
endif ()
else ()
# failed to fetch version, clear
set(AWK_VERSION)
endif ()
else ()
# clear
set(AWK_BIN)
set(AWK_VERSION)
endif ()
# Show these variables only in the advanced view in the GUI, and make them global
MARK_AS_ADVANCED(
AWK_FOUND
AWK_BIN
AWK_VERSION
)
|
