This series was merged 29 Sept, I know, but I had skin in this series,
so here's the (belated) review...

LGTM.

Reviewed-By: Joe Konno <joe.konno(a)intel.com>

On 09/07/2014 02:27 PM, Sami Kerola wrote:
> Horizontal lists has downside of being managed as a single entry in
> version control, which makes commits that add and remove items difficult
> to follow.  With vertical lists each entry is managed separately, which
> is much nicer.
> 
> Additionally add project URL to autoconfig init, and pretty print macro
> expressions to have indentation, and bracing that follows more or less in
> K&R style.
> 
> Signed-off-by: Sami Kerola <kerolasa(a)iki.fi>
> ---
>  configure.ac | 82 +++++++++++++++++++++++++++++++++++++++++++++++++-----------
>  1 file changed, 67 insertions(+), 15 deletions(-)
> 
> diff --git a/configure.ac b/configure.ac
> index 0b02ad2..b41cfb3 100644
> --- a/configure.ac
> +++ b/configure.ac
> @@ -2,15 +2,21 @@
>  # Process this file with autoconf to produce a configure script.
>  
>  AC_PREREQ([2.68])
> -AC_INIT([powertop], [2.6.1], [powertop(a)lists.01.org])
> -AM_INIT_AUTOMAKE([-Wall foreign ])
> +AC_INIT([powertop], [2.6.1], [powertop(a)lists.01.org], [], [https://01.org/powertop])
> +AM_INIT_AUTOMAKE([-Wall foreign])
>  AC_LANG([C++])
> -AC_CONFIG_FILES([Makefile src/Makefile traceevent/Makefile po/Makefile.in doc/Makefile])
> +AC_CONFIG_FILES([
> +	Makefile
> +	src/Makefile
> +	traceevent/Makefile
> +	po/Makefile.in
> +	doc/Makefile
> +])
>  AC_CONFIG_SRCDIR([src/main.cpp])
>  AC_CONFIG_MACRO_DIR([m4])
>  AC_CONFIG_HEADERS([config.h])
>  GETTEXT_PACKAGE=powertop
> -AC_SUBST(GETTEXT_PACKAGE)
> +AC_SUBST([GETTEXT_PACKAGE])
>  AM_SILENT_RULES([yes])
>  AM_GNU_GETTEXT([external])
>  AM_GNU_GETTEXT_VERSION([0.18])
> @@ -26,7 +32,23 @@ AM_PROG_CC_C_O
>  
>  # Checks for libraries.
>  # Checks for header files.
> -AC_CHECK_HEADERS([fcntl.h libintl.h limits.h locale.h malloc.h stdint.h stdlib.h string.h sys/ioctl.h sys/socket.h sys/statfs.h sys/time.h termios.h unistd.h ncurses.h])
> +AC_CHECK_HEADERS([ \
> +	fcntl.h \
> +	libintl.h \
> +	limits.h \
> +	locale.h \
> +	malloc.h \
> +	ncurses.h \
> +	stdint.h \
> +	stdlib.h \
> +	string.h \
> +	sys/ioctl.h \
> +	sys/socket.h \
> +	sys/statfs.h \
> +	sys/time.h \
> +	termios.h \
> +	unistd.h \
> +])
>  
>  # Checks for typedefs, structures, and compiler characteristics.
>  AC_HEADER_STDBOOL
> @@ -44,20 +66,46 @@ AC_FUNC_MALLOC
>  AC_FUNC_MMAP
>  AC_FUNC_REALLOC
>  AC_FUNC_STRTOD
> -AC_CHECK_FUNCS([fdatasync getpagesize gettimeofday memmove memset mkdir munmap pow realpath regcomp select setlocale socket sqrt strcasecmp strchr strdup strerror strncasecmp strstr strtoul strtoull])
> +AC_CHECK_FUNCS([ \
> +	fdatasync \
> +	getpagesize \
> +	gettimeofday \
> +	memmove \
> +	memset \
> +	mkdir \
> +	munmap \
> +	pow \
> +	realpath \
> +	regcomp \
> +	select \
> +	setlocale \
> +	socket \
> +	sqrt \
> +	strcasecmp \
> +	strchr \
> +	strdup \
> +	strerror \
> +	strncasecmp \
> +	strstr \
> +	strtoul \
> +	strtoull \
> +])
>  
> -PKG_CHECK_MODULES([NCURSES], [ncursesw ncurses], [LIBS="$LIBS $ncurses_LIBS"],
> -	AC_SEARCH_LIBS([delwin], [ncursesw ncurses], [], AC_MSG_ERROR([ncurses is required but was not found]), []))
> +PKG_CHECK_MODULES([NCURSES], [ncursesw ncurses], [LIBS="$LIBS $ncurses_LIBS"], [
> +	AC_SEARCH_LIBS([delwin], [ncursesw ncurses], [], [
> +		AC_MSG_ERROR([ncurses is required but was not found])
> +	], [])
> +])
>  
>  has_libpci=0
> -PKG_CHECK_MODULES([PCIUTILS], [libpci],[has_libpci=1],[
> -	AC_SEARCH_LIBS([pci_get_dev], [pci],[has_libpci=1], [has_libpci=0] )])
> +PKG_CHECK_MODULES([PCIUTILS], [libpci],[has_libpci=1], [
> +	AC_SEARCH_LIBS([pci_get_dev], [pci],[has_libpci=1], [has_libpci=0])
> +])
>   
>  
>  has_libnl_ver=0
> -# libnl-2 provides only libnl-2.0.pc file, so we check for separate libnl-genl-3.0.pc
> -# pkg-config file just for libnl-3.0 case.
> -#
> +dnl libnl-2 provides only libnl-2.0.pc file, so we check for separate
> +dnl libnl-genl-3.0.pc pkg-config file just for libnl-3.0 case.
>  PKG_CHECK_MODULES([LIBNL], [libnl-3.0 >= 3.0 libnl-genl-3.0 >= 3.0], [has_libnl_ver=3], [
>  	PKG_CHECK_MODULES([LIBNL], [libnl-2.0 >= 2.0], [has_libnl_ver=2], [
>  		PKG_CHECK_MODULES([LIBNL], [libnl-1], [has_libnl_ver=1], [has_libnl_ver=0])])])
> @@ -78,7 +126,11 @@ if (test "$has_libpci" -eq 0); then
>  	])
>  fi
>  
> -AC_SEARCH_LIBS([pthread_create], [pthread], [], AC_MSG_ERROR([libpthread is required but was not found]), [])
> -AC_SEARCH_LIBS([inet_aton], [resolv], [], AC_MSG_ERROR([libresolv is required but was not found]), [])
> +AC_SEARCH_LIBS([pthread_create], [pthread], [], [
> +	AC_MSG_ERROR([libpthread is required but was not found])
> +], [])
> +AC_SEARCH_LIBS([inet_aton], [resolv], [], [
> +	AC_MSG_ERROR([libresolv is required but was not found])
> +], [])
>  
>  AC_OUTPUT
>