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60 lines
1.7 KiB
Plaintext
60 lines
1.7 KiB
Plaintext
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# AST_FUNC_FORK
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# -------------
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AN_FUNCTION([fork], [AST_FUNC_FORK])
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AN_FUNCTION([vfork], [AST_FUNC_FORK])
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AC_DEFUN([AST_FUNC_FORK],
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[AC_REQUIRE([AC_TYPE_PID_T])dnl
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AC_CHECK_HEADERS(vfork.h)
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AC_CHECK_FUNCS(fork vfork)
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if test "x$ac_cv_func_fork" = xyes; then
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_AST_FUNC_FORK
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else
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ac_cv_func_fork_works=$ac_cv_func_fork
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fi
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if test "x$ac_cv_func_fork_works" = xcross; then
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case $host in
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*-*-amigaos* | *-*-msdosdjgpp* | *-*-uclinux* | *-*-linux-uclibc* )
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# Override, as these systems have only a dummy fork() stub
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ac_cv_func_fork_works=no
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;;
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*)
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ac_cv_func_fork_works=yes
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;;
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esac
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AC_MSG_WARN([result $ac_cv_func_fork_works guessed because of cross compilation])
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fi
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ac_cv_func_vfork_works=$ac_cv_func_vfork
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if test "x$ac_cv_func_vfork" = xyes; then
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_AC_FUNC_VFORK
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fi;
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if test "x$ac_cv_func_fork_works" = xcross; then
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ac_cv_func_vfork_works=$ac_cv_func_vfork
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AC_MSG_WARN([result $ac_cv_func_vfork_works guessed because of cross compilation])
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fi
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if test "x$ac_cv_func_vfork_works" = xyes; then
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AC_DEFINE(HAVE_WORKING_VFORK, 1, [Define to 1 if `vfork' works.])
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else
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AC_DEFINE(vfork, fork, [Define as `fork' if `vfork' does not work.])
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fi
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if test "x$ac_cv_func_fork_works" = xyes; then
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AC_DEFINE(HAVE_WORKING_FORK, 1, [Define to 1 if `fork' works.])
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fi
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])# AST_FUNC_FORK
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# _AST_FUNC_FORK
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# -------------
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AC_DEFUN([_AST_FUNC_FORK],
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[AC_CACHE_CHECK(for working fork, ac_cv_func_fork_works,
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[AC_RUN_IFELSE(
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[AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
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[
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/* By Ruediger Kuhlmann. */
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return fork () < 0;
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])],
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[ac_cv_func_fork_works=yes],
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[ac_cv_func_fork_works=no],
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[ac_cv_func_fork_works=cross])])]
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)# _AST_FUNC_FORK
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