Make new pipe2() test work properly when pipe2() undefined (e.g. on OS X).
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@@ -244,7 +244,7 @@ if test -z "$poll_LIBS"; then
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fi
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fi
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AC_MSG_CHECKING([whether pipe2(..., O_CLOEXEC) is supported])
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AC_MSG_CHECKING([whether pipe2(..., O_CLOEXEC) is supported])
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#define _GNU_SOURCE
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AC_LINK_IFELSE([AC_LANG_PROGRAM([[#define _GNU_SOURCE
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#include <unistd.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <fcntl.h>
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int pipefd[2];
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int pipefd[2];
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