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28 lines
706 B
Plaintext
28 lines
706 B
Plaintext
#serial 2
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# See if we need to emulate a missing ftruncate function using fcntl.
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AC_DEFUN(jm_FUNC_FTRUNCATE,
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[
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AC_CHECK_FUNCS(ftruncate, , [ftruncate_missing=yes])
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if test "$ftruncate_missing" = yes; then
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AC_CHECK_HEADERS(unistd.h)
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AC_MSG_CHECKING([fcntl emulation of ftruncate])
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AC_CACHE_VAL(fu_cv_sys_ftruncate_emulation,
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[AC_TRY_LINK([
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#include <sys/types.h>
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#include <fcntl.h>], [
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#if !defined(F_CHSIZE) && !defined(F_FREESP)
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chsize();
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#endif
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],
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fu_cv_sys_ftruncate_emulation=yes,
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fu_cv_sys_ftruncate_emulation=no)])
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AC_MSG_RESULT($fu_cv_sys_ftruncate_emulation)
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if test $fu_cv_sys_ftruncate_emulation = yes; then
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AC_LIBOBJ(ftruncate)
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fi
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fi
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])
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