[Bug bootstrap/91352] [10 Regression] Jobserver detection uses fcntl, which is not available on mingw-w64

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91352

--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Thu Aug  8 07:50:28 2019
New Revision: 274208

URL: https://gcc.gnu.org/viewcvs?rev=274208&root=gcc&view=rev
Log:
Fix file descriptor existence of MinGW.

2019-08-08  Martin Liska  <mliska@suse.cz>

        PR bootstrap/91352
        * gcc.c (driver::detect_jobserver): Use is_valid_fd.
        * lto-wrapper.c (jobserver_active_p): Likewise.
2019-08-08  Martin Liska  <mliska@suse.cz>

        PR bootstrap/91352
        * libiberty.h (is_valid_fd): New function.
2019-08-08  Martin Liska  <mliska@suse.cz>

        PR bootstrap/91352
        * lrealpath.c (is_valid_fd): New function.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/gcc.c
    trunk/gcc/lto-wrapper.c
    trunk/include/ChangeLog
    trunk/include/libiberty.h
    trunk/libiberty/ChangeLog
    trunk/libiberty/lrealpath.c