Re: [PATCH 1/2] fstests: autoconf has deprecated a bunch of macros

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On Mon, Oct 11, 2021 at 10:06:58AM +1100, Dave Chinner wrote:
> From: Dave Chinner <dchinner@xxxxxxxxxx>
> 
> Latest debian unstable environment results in these build warnings:
> 
> autoconf
> configure.ac:8: warning: The macro `AC_HEADER_STDC' is obsolete.
> configure.ac:8: You should run autoupdate.
> ./lib/autoconf/headers.m4:704: AC_HEADER_STDC is expanded from...
> configure.ac:8: the top level
> configure.ac:50: warning: The macro `AC_TRY_LINK' is obsolete.
> configure.ac:50: You should run autoupdate.
> ./lib/autoconf/general.m4:2920: AC_TRY_LINK is expanded from...
> m4/package_xfslibs.m4:95: AC_PACKAGE_NEED_XFSCTL_MACRO is expanded from...
> configure.ac:50: the top level
> configure.ac:63: warning: The macro `AC_TRY_LINK' is obsolete.
> configure.ac:63: You should run autoupdate.
> ./lib/autoconf/general.m4:2920: AC_TRY_LINK is expanded from...
> acinclude.m4:19: AC_PACKAGE_WANT_FALLOCATE is expanded from...
> configure.ac:63: the top level
> configure.ac:64: warning: The macro `AC_TRY_LINK' is obsolete.
> configure.ac:64: You should run autoupdate.
> ./lib/autoconf/general.m4:2920: AC_TRY_LINK is expanded from...
> acinclude.m4:32: AC_PACKAGE_WANT_OPEN_BY_HANDLE_AT is expanded from...
> configure.ac:64: the top level
> configure.ac:69: warning: The macro `AC_TRY_LINK' is obsolete.
> configure.ac:69: You should run autoupdate.
> ./lib/autoconf/general.m4:2920: AC_TRY_LINK is expanded from...
> m4/package_libcdev.m4:106: AC_HAVE_COPY_FILE_RANGE is expanded from...
> configure.ac:69: the top level
> configure.ac:107: warning: The macro `AC_CONFIG_HEADER' is obsolete.
> configure.ac:107: You should run autoupdate.
> ./lib/autoconf/status.m4:719: AC_CONFIG_HEADER is expanded from...
> configure.ac:107: the top level
> 
> So, run autoupdate and then fix all the warnings.
> 
> Signed-off-by: Dave Chinner <dchinner@xxxxxxxxxx>

Much as I hate autoconf, this actually does look correct now that I've
sifted through the latest documentation.  Surprisingly it even works on
Ubuntu 20.04...

Reviewed-by: Darrick J. Wong <djwong@xxxxxxxxxx>

--D

> ---
>  acinclude.m4          | 16 ++++-------
>  configure.ac          |  9 +++----
>  m4/package_libcdev.m4 | 63 +++++++++++++++++++------------------------
>  m4/package_ncurses.m4 |  7 ++---
>  m4/package_xfslibs.m4 |  7 ++---
>  5 files changed, 41 insertions(+), 61 deletions(-)
> 
> diff --git a/acinclude.m4 b/acinclude.m4
> index a605c01c..fd92f0d5 100644
> --- a/acinclude.m4
> +++ b/acinclude.m4
> @@ -18,28 +18,22 @@ AC_DEFUN([AC_PACKAGE_WANT_LINUX_FS_H],
>  
>  AC_DEFUN([AC_PACKAGE_WANT_FALLOCATE],
>    [ AC_MSG_CHECKING([for fallocate])
> -    AC_TRY_LINK([
> +    AC_LINK_IFELSE([AC_LANG_PROGRAM([[
>  #define _GNU_SOURCE
>  #define _FILE_OFFSET_BITS 64
>  #include <fcntl.h>
> -#include <linux/falloc.h> ],
> -      [ fallocate(0, 0, 0, 0); ],
> -      [ have_fallocate=true; AC_MSG_RESULT(yes) ],
> -      [ have_fallocate=false; AC_MSG_RESULT(no) ])
> +#include <linux/falloc.h> ]], [[ fallocate(0, 0, 0, 0); ]])],[ have_fallocate=true; AC_MSG_RESULT(yes) ],[ have_fallocate=false; AC_MSG_RESULT(no) ])
>      AC_SUBST(have_fallocate)
>    ])
>  
>  AC_DEFUN([AC_PACKAGE_WANT_OPEN_BY_HANDLE_AT],
>    [ AC_MSG_CHECKING([for open_by_handle_at])
> -    AC_TRY_LINK([
> +    AC_LINK_IFELSE([AC_LANG_PROGRAM([[
>  #define _GNU_SOURCE
>  #include <fcntl.h>
> -      ],
> -      [
> +      ]], [[
>            struct file_handle fh;
>            open_by_handle_at(0, &fh, 0);
> -      ],
> -      [ have_open_by_handle_at=true; AC_MSG_RESULT(yes) ],
> -      [ have_open_by_handle_at=false; AC_MSG_RESULT(no) ])
> +      ]])],[ have_open_by_handle_at=true; AC_MSG_RESULT(yes) ],[ have_open_by_handle_at=false; AC_MSG_RESULT(no) ])
>      AC_SUBST(have_open_by_handle_at)
>    ])
> diff --git a/configure.ac b/configure.ac
> index 6e5ab397..cbf83779 100644
> --- a/configure.ac
> +++ b/configure.ac
> @@ -1,12 +1,11 @@
> -AC_INIT([xfstests], [1.1.1])
> +AC_INIT([xfstests],[1.1.2])
>  AC_CONFIG_MACRO_DIR([m4])
>  LT_INIT
>  AC_CONFIG_SRCDIR([src/xfsctl.c])
>  AC_PACKAGE_GLOBALS(xfstests)
>  AC_PACKAGE_UTILITIES(xfstests)
>  
> -AC_HEADER_STDC
> -    AC_CHECK_HEADERS([	assert.h		\
> +AC_CHECK_HEADERS([	assert.h		\
>  			bstring.h		\
>  			libgen.h		\
>  			dirent.h		\
> @@ -34,7 +33,7 @@ AC_HEADER_STDC
>  			btrfs/ioctl.h		\
>  			cifs/ioctl.h		\
>  			sys/mman.h		\
> -    ])
> +])
>  
>  AC_CHECK_HEADERS([xfs/xfs_log_format.h],,,[
>  #define _GNU_SOURCE
> @@ -104,6 +103,6 @@ AC_CHECK_MEMBERS([struct btrfs_ioctl_vol_args_v2.subvolid], [], [], [[
>  #include <linux/btrfs.h>
>  ]])
>  
> -AC_CONFIG_HEADER(include/config.h)
> +AC_CONFIG_HEADERS([include/config.h])
>  AC_CONFIG_FILES([include/builddefs])
>  AC_OUTPUT
> diff --git a/m4/package_libcdev.m4 b/m4/package_libcdev.m4
> index 14e67e18..5c76c0f7 100644
> --- a/m4/package_libcdev.m4
> +++ b/m4/package_libcdev.m4
> @@ -3,15 +3,14 @@
>  # 
>  AC_DEFUN([AC_HAVE_FADVISE],
>    [ AC_MSG_CHECKING([for fadvise ])
> -    AC_TRY_COMPILE([
> +    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
>  #define _GNU_SOURCE
>  #define _FILE_OFFSET_BITS 64
>  #include <fcntl.h>
> -    ], [
> +    ]], [[
>  	posix_fadvise(0, 1, 0, POSIX_FADV_NORMAL);
> -    ],	have_fadvise=yes
> -	AC_MSG_RESULT(yes),
> -	AC_MSG_RESULT(no))
> +    ]])],[have_fadvise=yes
> +	AC_MSG_RESULT(yes)],[AC_MSG_RESULT(no)])
>      AC_SUBST(have_fadvise)
>    ])
>  
> @@ -20,15 +19,14 @@ AC_DEFUN([AC_HAVE_FADVISE],
>  # 
>  AC_DEFUN([AC_HAVE_MADVISE],
>    [ AC_MSG_CHECKING([for madvise ])
> -    AC_TRY_COMPILE([
> +    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
>  #define _GNU_SOURCE
>  #define _FILE_OFFSET_BITS 64
>  #include <sys/mman.h>
> -    ], [
> +    ]], [[
>  	posix_madvise(0, 0, MADV_NORMAL);
> -    ],	have_madvise=yes
> -	AC_MSG_RESULT(yes),
> -	AC_MSG_RESULT(no))
> +    ]])],[have_madvise=yes
> +	AC_MSG_RESULT(yes)],[AC_MSG_RESULT(no)])
>      AC_SUBST(have_madvise)
>    ])
>  
> @@ -37,15 +35,14 @@ AC_DEFUN([AC_HAVE_MADVISE],
>  # 
>  AC_DEFUN([AC_HAVE_MINCORE],
>    [ AC_MSG_CHECKING([for mincore ])
> -    AC_TRY_COMPILE([
> +    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
>  #define _GNU_SOURCE
>  #define _FILE_OFFSET_BITS 64
>  #include <sys/mman.h>
> -    ], [
> +    ]], [[
>  	mincore(0, 0, 0);
> -    ],	have_mincore=yes
> -	AC_MSG_RESULT(yes),
> -	AC_MSG_RESULT(no))
> +    ]])],[have_mincore=yes
> +	AC_MSG_RESULT(yes)],[AC_MSG_RESULT(no)])
>      AC_SUBST(have_mincore)
>    ])
>  
> @@ -54,15 +51,14 @@ AC_DEFUN([AC_HAVE_MINCORE],
>  # 
>  AC_DEFUN([AC_HAVE_SENDFILE],
>    [ AC_MSG_CHECKING([for sendfile ])
> -    AC_TRY_COMPILE([
> +    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
>  #define _GNU_SOURCE
>  #define _FILE_OFFSET_BITS 64
>  #include <sys/sendfile.h>
> -    ], [
> +    ]], [[
>           sendfile(0, 0, 0, 0);
> -    ],	have_sendfile=yes
> -	AC_MSG_RESULT(yes),
> -	AC_MSG_RESULT(no))
> +    ]])],[have_sendfile=yes
> +	AC_MSG_RESULT(yes)],[AC_MSG_RESULT(no)])
>      AC_SUBST(have_sendfile)
>    ])
>  
> @@ -71,14 +67,13 @@ AC_DEFUN([AC_HAVE_SENDFILE],
>  #
>  AC_DEFUN([AC_HAVE_GETMNTENT],
>    [ AC_MSG_CHECKING([for getmntent ])
> -    AC_TRY_COMPILE([
> +    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
>  #include <stdio.h>
>  #include <mntent.h>
> -    ], [
> +    ]], [[
>           getmntent(0);
> -    ], have_getmntent=yes
> -       AC_MSG_RESULT(yes),
> -       AC_MSG_RESULT(no))
> +    ]])],[have_getmntent=yes
> +       AC_MSG_RESULT(yes)],[AC_MSG_RESULT(no)])
>      AC_SUBST(have_getmntent)
>    ])
>  
> @@ -87,15 +82,14 @@ AC_DEFUN([AC_HAVE_GETMNTENT],
>  #
>  AC_DEFUN([AC_HAVE_GETMNTINFO],
>    [ AC_MSG_CHECKING([for getmntinfo ])
> -    AC_TRY_COMPILE([
> +    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
>  #include <sys/param.h>
>  #include <sys/ucred.h>
>  #include <sys/mount.h>
> -    ], [
> +    ]], [[
>           getmntinfo(0, 0);
> -    ], have_getmntinfo=yes
> -       AC_MSG_RESULT(yes),
> -       AC_MSG_RESULT(no))
> +    ]])],[have_getmntinfo=yes
> +       AC_MSG_RESULT(yes)],[AC_MSG_RESULT(no)])
>      AC_SUBST(have_getmntinfo)
>    ])
>  
> @@ -105,15 +99,14 @@ AC_DEFUN([AC_HAVE_GETMNTINFO],
>  #
>  AC_DEFUN([AC_HAVE_COPY_FILE_RANGE],
>    [ AC_MSG_CHECKING([for copy_file_range])
> -    AC_TRY_LINK([
> +    AC_LINK_IFELSE([AC_LANG_PROGRAM([[
>  #define _GNU_SOURCE
>  #include <sys/syscall.h>
>  #include <unistd.h>
> -    ], [
> +    ]], [[
>           syscall(__NR_copy_file_range, 0, 0, 0, 0, 0, 0);
> -    ], have_copy_file_range=yes
> -       AC_MSG_RESULT(yes),
> -       AC_MSG_RESULT(no))
> +    ]])],[have_copy_file_range=yes
> +       AC_MSG_RESULT(yes)],[AC_MSG_RESULT(no)])
>      AC_SUBST(have_copy_file_range)
>    ])
>  
> diff --git a/m4/package_ncurses.m4 b/m4/package_ncurses.m4
> index 83a2c382..b220dd64 100644
> --- a/m4/package_ncurses.m4
> +++ b/m4/package_ncurses.m4
> @@ -19,12 +19,9 @@ AC_DEFUN([AC_PACKAGE_WANT_WORKING_LIBNCURSES],
>      libcurses="-lncurses"
>      LIBS="$LIBS $libcurses"
>      CFLAGS="$CFLAGS -D_GNU_SOURCE"
> -    AC_TRY_LINK([
> +    AC_LINK_IFELSE([AC_LANG_PROGRAM([[
>  #include <ncurses.h>
> -#include <signal.h>],
> -        [wgetch(stdscr);],
> -        [enable_curses=yes; AC_MSG_RESULT([ok])],
> -        [enable_curses=no; libcurses=""; AC_MSG_RESULT([disabling curses])])
> +#include <signal.h>]], [[wgetch(stdscr);]])],[enable_curses=yes; AC_MSG_RESULT([ok])],[enable_curses=no; libcurses=""; AC_MSG_RESULT([disabling curses])])
>      AC_SUBST(enable_curses)
>      AC_SUBST(libcurses)
>    ])
> diff --git a/m4/package_xfslibs.m4 b/m4/package_xfslibs.m4
> index 9be56e11..0746cd1d 100644
> --- a/m4/package_xfslibs.m4
> +++ b/m4/package_xfslibs.m4
> @@ -94,13 +94,10 @@ AC_DEFUN([AC_PACKAGE_NEED_ATTRLIST_LIBHANDLE],
>  
>  AC_DEFUN([AC_PACKAGE_NEED_XFSCTL_MACRO],
>    [ AC_MSG_CHECKING([xfsctl from xfs/xfs.h])
> -    AC_TRY_LINK([
> +    AC_LINK_IFELSE([AC_LANG_PROGRAM([[
>  #define _GNU_SOURCE
>  #define _FILE_OFFSET_BITS 64
> -#include <xfs/xfs.h> ],
> -      [ int x = xfsctl(0, 0, 0, 0); ],
> -      [ echo ok ],
> -      [ echo
> +#include <xfs/xfs.h> ]], [[ int x = xfsctl(0, 0, 0, 0); ]])],[ echo ok ],[ echo
>          echo 'FATAL ERROR: cannot find required macros in the XFS headers.'
>          echo 'Upgrade your XFS programs (xfsprogs) development package.'
>          echo 'Alternatively, run "make install-dev" from the xfsprogs source.'
> -- 
> 2.33.0
> 



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