Chet Ramey wrote: > On 9/18/16 11:20 PM, Felix Janda wrote: > > >>> Notice that the configure script disables job-control when a run-time > >>> test (which could easily be a built-time test) fails. So by default, > >>> a cross-compiled bash will have this bug. > >> > >> Which test? > > > > I am referring to BASH_SYS_JOB_CONTROL_MISSING. > > Sure. I'm asking which part of that run-time test can easily be converted > to a build-time test that handles conditional compilation and definitions.
Everything could easily be a preprocessor test: #include <sys/types.h> #ifdef HAVE_SYS_WAIT_H #include <sys/wait.h> #endif #ifdef HAVE_UNISTD_H #include <unistd.h> #endif #include <signal.h> /* signal type */ #if !defined (HAVE_POSIX_SIGNALS) && !defined (HAVE_BSD_SIGNALS) #error #endif /* signals and tty control. */ #if !defined (SIGTSTP) || !defined (SIGSTOP) || !defined (SIGCONT) #error #endif /* process control */ #if !defined (WNOHANG) || !defined (WUNTRACED) #error #endif /* Posix systems have tcgetpgrp and waitpid. */ #if defined (_POSIX_VERSION) && !defined (HAVE_TCGETPGRP) #error #endif #if defined (_POSIX_VERSION) && !defined (HAVE_WAITPID) #error #endif /* Other systems have TIOCSPGRP/TIOCGPRGP and wait3. */ #if !defined (_POSIX_VERSION) && !defined (HAVE_WAIT3) #error #endif I think that the only reason that it is currently a run-time test is related to the comment: /* Add more tests in here as appropriate. */ So it was conceived that in future run-time only tests might be necessary. Felix