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git-compat-util: prefer poll.h to sys/poll.h 

POSIX specifies that <poll.h> is the correct header for poll(2)
whereas <sys/poll.h> is only needed for some old libc.

Let's follow the POSIX way by default.

This effectively eliminates musl's warning:

    warning redirecting incorrect #include <sys/poll.h> to <poll.h>

Signed-off-by: Đoàn Trần Công Danh <congdanhqx@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Đoàn Trần Công Danh 2018-11-14 08:10:43 +07:00 committed by Junio C Hamano
parent d166e6afe5
commit 2648ccc231
3 changed files with 17 additions and 2 deletions
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8
Makefile
View File

@ -207,10 +207,12 @@ all::
# Define MMAP_PREVENTS_DELETE if a file that is currently mmapped cannot be
# deleted or cannot be replaced using rename().
#
# Define NO_POLL_H if you don't have poll.h.
#
# Define NO_SYS_POLL_H if you don't have sys/poll.h.
#
# Define NO_POLL if you do not have or don't want to use poll().
# This also implies NO_SYS_POLL_H.
# This also implies NO_POLL_H and NO_SYS_POLL_H.
#
# Define NEEDS_SYS_PARAM_H if you need to include sys/param.h to compile,
# *PLEASE* REPORT to git@vger.kernel.org if your platform needs this;
@ -1460,6 +1462,7 @@ ifdef NO_GETTEXT
USE_GETTEXT_SCHEME ?= fallthrough
endif
ifdef NO_POLL
NO_POLL_H = YesPlease
NO_SYS_POLL_H = YesPlease
COMPAT_CFLAGS += -DNO_POLL -Icompat/poll
COMPAT_OBJS += compat/poll/poll.o
@ -1498,6 +1501,9 @@ endif
ifdef NO_SYS_SELECT_H
BASIC_CFLAGS += -DNO_SYS_SELECT_H
endif
ifdef NO_POLL_H
BASIC_CFLAGS += -DNO_POLL_H
endif
ifdef NO_SYS_POLL_H
BASIC_CFLAGS += -DNO_SYS_POLL_H
endif

6
configure.ac
View File

@ -792,6 +792,12 @@ AC_CHECK_HEADER([sys/select.h],
[NO_SYS_SELECT_H=UnfortunatelyYes])
GIT_CONF_SUBST([NO_SYS_SELECT_H])
#
# Define NO_POLL_H if you don't have poll.h
AC_CHECK_HEADER([poll.h],
[NO_POLL_H=],
[NO_POLL_H=UnfortunatelyYes])
GIT_CONF_SUBST([NO_POLL_H])
#
# Define NO_SYS_POLL_H if you don't have sys/poll.h
AC_CHECK_HEADER([sys/poll.h],
[NO_SYS_POLL_H=],

5
git-compat-util.h
View File

@ -180,9 +180,12 @@
#include <regex.h>
#include <utime.h>
#include <syslog.h>
#ifndef NO_SYS_POLL_H
#if !defined(NO_POLL_H)
#include <poll.h>
#elif !defined(NO_SYS_POLL_H)
#include <sys/poll.h>
#else
/* Pull the compat stuff */
#include <poll.h>
#endif
#ifdef HAVE_BSD_SYSCTL