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36 lines
1.1 KiB
Plaintext
36 lines
1.1 KiB
Plaintext
# Check for support for nanosleep. It's defined in <time.h>, but on
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# some systems, such as solaris, you need to link in a library to use it.
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# We set acx_nanosleep_ok if nanosleep is supported; in that case,
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# NANOSLEEP_LIBS is set to whatever libraries are needed to support
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# nanosleep.
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AC_DEFUN([ACX_NANOSLEEP],
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[AC_MSG_CHECKING(if nanosleep requires any libraries)
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AC_LANG_SAVE
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AC_LANG_C
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acx_nanosleep_ok="no"
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NANOSLEEP_LIBS=
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# For most folks, this should just work
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AC_TRY_LINK([#include <time.h>],
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[static struct timespec ts; nanosleep(&ts, NULL);],
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[acx_nanosleep_ok=yes])
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# For solaris, we may need -lrt
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if test "x$acx_nanosleep_ok" != "xyes"; then
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OLD_LIBS="$LIBS"
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LIBS="-lrt $LIBS"
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AC_TRY_LINK([#include <time.h>],
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[static struct timespec ts; nanosleep(&ts, NULL);],
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[acx_nanosleep_ok=yes])
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if test "x$acx_nanosleep_ok" = "xyes"; then
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NANOSLEEP_LIBS="-lrt"
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fi
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LIBS="$OLD_LIBS"
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fi
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if test "x$acx_nanosleep_ok" != "xyes"; then
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AC_MSG_ERROR([cannot find the nanosleep function])
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else
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AC_MSG_RESULT(${NANOSLEEP_LIBS:-no})
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fi
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AC_LANG_RESTORE
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])
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