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