* Noteworthy changes in release 2016.09.16 (2016-09-16) [stable]
The following macros were added: AX_BUILD_DATE_EPOCH, AX_CHECK_X86_FEATURES,
AX_GCC_X86_CPU_SUPPORTS, AX_OPEN62541_CHECK_H, AX_OPEN62541_CHECK_LIB, and
AX_LUAROCKS_ROCK.
While updating AX_CODE_COVERAGE, the variable CODE_COVERAGE_LDFLAGS was
renamed to CODE_COVERAGE_LIBS.
AX_VALGRIND_CHECK has been extended considerably. In this process. the
undocumented internal rule check-valgrind-tool was removed.
It checks if the host cpu supports various instruction set: mmx, sse, popcnt,
avx, avx2, etc. If the instruction were supported, it would export
HAVE_XXX_INSTRUCTIONS C preprocessor macros and add the instruction set flag to
X86_FEATURES_CFLAGS variable. By default it would also set CFLAGS, but this can
be disabled by the ACTION-IF-FOUND hook.
AX_WITH_CURSES and AX_WITH_CURSES_* macros have been modernized, in line
with PKG_CHECK_MODULES's style. This change breaks the interface, but
makes AX_WITH_CURSES compatible and even completely replaceable with the
interface of PKG_CHECK_MODULES. Ultimately, these macros should be
replaced in the future by calls to PKG_CHECK_MODULES. Variables in
AX_WITH_CURSES have been renamed
CURSES_LIB -> CURSES_LIBS
CURSES_CPPFLAGS -> CURSES_CFLAGS
and for the AX_WITH_CURSES_* macros
PANEL_LIB -> PANEL_LIBS
MENU_LIB -> MENU_LIBS
FORM_LIB -> FORM_LIBS
such that once the variables have been renamed in configure.ac and Makefile.am,
the calls AX_WITH_CURSES and PKG_CHECK_MODULES([CURSES], [ncurses]) are
completely interchangeable.
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