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# Copyright (c) 2011 WorkWare Systems http://www.workware.net.au/
# All rights reserved
# @synopsis:
#
# Provides a library of common tests on top of the 'cc' module.
use cc
module-options {}
# @cc-check-lfs
#
# The equivalent of the AC_SYS_LARGEFILE macro
#
# defines 'HAVE_LFS' if LFS is available,
# and defines '_FILE_OFFSET_BITS=64' if necessary
#
# Returns 1 if 'LFS' is available or 0 otherwise
#
proc cc-check-lfs {} {
cc-check-includes sys/types.h
msg-checking "Checking if -D_FILE_OFFSET_BITS=64 is needed..."
set lfs 1
if {[msg-quiet cc-with {-includes sys/types.h} {cc-check-sizeof off_t}] == 8} {
msg-result no
} elseif {[msg-quiet cc-with {-includes sys/types.h -cflags -D_FILE_OFFSET_BITS=64} {cc-check-sizeof off_t}] == 8} {
define _FILE_OFFSET_BITS 64
msg-result yes
} else {
set lfs 0
msg-result none
}
define-feature lfs $lfs
return $lfs
}
# @cc-check-endian
#
# The equivalent of the AC_C_BIGENDIAN macro
#
# defines 'HAVE_BIG_ENDIAN' if endian is known to be big,
# or 'HAVE_LITTLE_ENDIAN' if endian is known to be little.
#
# Returns 1 if determined, or 0 if not.
#
proc cc-check-endian {} {
cc-check-includes sys/types.h sys/param.h
set rc 0
msg-checking "Checking endian..."
cc-with {-includes {sys/types.h sys/param.h}} {
if {[cctest -code {
#if! defined(BIG_ENDIAN) || !defined(BYTE_ORDER)
#error unknown
#elif BYTE_ORDER != BIG_ENDIAN
#error little
#endif
}]} {
define-feature big-endian
msg-result "big"
set rc 1
} elseif {[cctest -code {
#if! defined(LITTLE_ENDIAN) || !defined(BYTE_ORDER)
#error unknown
#elif BYTE_ORDER != LITTLE_ENDIAN
#error big
#endif
}]} {
define-feature little-endian
msg-result "little"
set rc 1
} else {
msg-result "unknown"
}
}
return $rc
}
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