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  1. JDK
  2. JDK-8252248

__SIGRTMAX is not declared in musl libc

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    Details

    • Type: Bug
    • Status: Resolved
    • Priority: P4
    • Resolution: Fixed
    • Affects Version/s: 16
    • Fix Version/s: 16
    • Component/s: core-libs
    • Labels:
      None
    • Environment:

      OS: Alpine Linux 3.11.6
      libc: musl (x86_64) version 1.1.24

    • Subcomponent:
    • Resolved In Build:
      b14
    • OS:
      other

      Description

      Building JDK with musl libc gives the error:
      ---------------------
      src/java.base/linux/native/libnet/linux_close.c:63:25: error: '__SIGRTMAX' undeclared here (not in a function); did you mean 'SIGRTMAX'?
         63 | static int sigWakeup = (__SIGRTMAX - 2);
            | ^~~~~~~~~~
            | SIGRTMAX
      ---------------------

      This is because musl libc does not define __SIGRTMAX constant.

      Simple replacing __SIGRTMAX to SIGRTMAX does not work either because SIGRTMAX is defined as function and not as a constant:
      https://git.musl-libc.org/cgit/musl/tree/include/signal.h#n196

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            Assignee:
            alexsch Alexandr Scherbatiy
            Reporter:
            alexsch Alexandr Scherbatiy
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              Updated:
              Resolved: