commit: 182cde0e780e2b3b0bc7de51f4712c54f47c89ad
Author: Mike Frysinger <vapier <AT> gentoo <DOT> org>
AuthorDate: Sun Sep 13 05:30:02 2015 +0000
Commit: Mike Frysinger <vapier <AT> gentoo <DOT> org>
CommitDate: Sun Sep 13 05:30:02 2015 +0000
URL: https://gitweb.gentoo.org/proj/sandbox.git/commit/?id=182cde0e
update autotool files
Fix up the recursive logic with the ax processing so we actually grab all
the ones we need. We probably grab too many, but meh.
Signed-off-by: Mike Frysinger <vapier <AT> gentoo.org>
INSTALL | 6 +-
autogen.sh | 15 ++--
m4/ax_append_compile_flags.m4 | 6 +-
m4/ax_append_flag.m4 | 30 ++++----
m4/ax_append_link_flags.m4 | 6 +-
m4/ax_cflags_force_c89.m4 | 4 +-
m4/ax_cflags_strict_prototypes.m4 | 4 +-
m4/ax_cflags_warn_all.m4 | 4 +-
m4/ax_check_compile_flag.m4 | 12 +--
m4/ax_check_link_flag.m4 | 13 ++--
m4/ax_compiler_flags.m4 | 158 ++++++++++++++++++++++++++++++++++++++
m4/ax_compiler_flags_cflags.m4 | 132 +++++++++++++++++++++++++++++++
m4/ax_compiler_flags_cxxflags.m4 | 128 ++++++++++++++++++++++++++++++
m4/ax_compiler_flags_gir.m4 | 60 +++++++++++++++
m4/ax_compiler_flags_ldflags.m4 | 75 ++++++++++++++++++
m4/ax_require_defined.m4 | 37 +++++++++
16 files changed, 646 insertions(+), 44 deletions(-)
diff --git a/INSTALL b/INSTALL
index 6e90e07..2099840 100644
--- a/INSTALL
+++ b/INSTALL
@@ -1,7 +1,7 @@
Installation Instructions
*************************
-Copyright (C) 1994-1996, 1999-2002, 2004-2012 Free Software Foundation,
+Copyright (C) 1994-1996, 1999-2002, 2004-2013 Free Software Foundation,
Inc.
Copying and distribution of this file, with or without modification,
@@ -12,8 +12,8 @@ without warranty of any kind.
Basic Installation
==================
- Briefly, the shell commands `./configure; make; make install' should
-configure, build, and install this package. The following
+ Briefly, the shell command `./configure && make && make install'
+should configure, build, and install this package. The following
more-detailed instructions are generic; see the `README' file for
instructions specific to this package. Some packages provide this
`INSTALL' file but do not implement all of the features documented
diff --git a/autogen.sh b/autogen.sh
index 8a53fc8..e583300 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -5,7 +5,7 @@ touch ChangeLog
# avoid ugly warnings due to mismatch between local libtool and
# whatever updated version is on the host
-find m4/*.m4 '!' -name 'ax_*.m4' -delete 2>/dev/null || :
+rm -f m4/*.m4
# not everyone has sys-devel/autoconf-archive installed
has() { [[ " ${*:2} " == *" $1 "* ]] ; }
@@ -13,9 +13,9 @@ import_ax() {
local macro content m4 lm4s=()
content=$(sed -e '/^[[:space:]]*#/d' -e 's:\<dnl\>.*::' "$@")
for macro in $(echo "${content}" | grep -o '\<AX[A-Z_]*\>' | sort -u) ;
do
- if m4=$(grep -rl "\[${macro}\]" /usr/share/aclocal/) ; then
+ for m4 in $(grep -rl "\[${macro}\]" /usr/share/aclocal/) ; do
has ${m4} "${m4s[@]}" || lm4s+=( ${m4} )
- fi
+ done
done
if [[ ${#lm4s[@]} -gt 0 ]] ; then
cp -v `printf '%s\n' ${lm4s[@]} | sort -u` m4/
@@ -24,8 +24,13 @@ import_ax() {
}
m4s=()
import_ax configure.ac
-import_ax m4/ax_*.m4
-import_ax m4/ax_*.m4
+curr=1
+new=0
+while [[ ${curr} -ne ${new} ]] ; do
+ curr=${#m4s[@]}
+ import_ax m4/ax_*.m4
+ new=${#m4s[@]}
+done
autoreconf -i -f
diff --git a/m4/ax_append_compile_flags.m4 b/m4/ax_append_compile_flags.m4
index 1f8e708..dc7b866 100644
--- a/m4/ax_append_compile_flags.m4
+++ b/m4/ax_append_compile_flags.m4
@@ -54,11 +54,11 @@
# modified version of the Autoconf Macro, you may extend this special
# exception to the GPL to apply to your modified version as well.
-#serial 3
+#serial 4
AC_DEFUN([AX_APPEND_COMPILE_FLAGS],
-[AC_REQUIRE([AX_CHECK_COMPILE_FLAG])
-AC_REQUIRE([AX_APPEND_FLAG])
+[AX_REQUIRE_DEFINED([AX_CHECK_COMPILE_FLAG])
+AX_REQUIRE_DEFINED([AX_APPEND_FLAG])
for flag in $1; do
AX_CHECK_COMPILE_FLAG([$flag], [AX_APPEND_FLAG([$flag], [$2])], [], [$3])
done
diff --git a/m4/ax_append_flag.m4 b/m4/ax_append_flag.m4
index 1d38b76..aeab899 100644
--- a/m4/ax_append_flag.m4
+++ b/m4/ax_append_flag.m4
@@ -49,21 +49,23 @@
# modified version of the Autoconf Macro, you may extend this special
# exception to the GPL to apply to your modified version as well.
-#serial 2
+#serial 5
AC_DEFUN([AX_APPEND_FLAG],
-[AC_PREREQ(2.59)dnl for _AC_LANG_PREFIX
-AS_VAR_PUSHDEF([FLAGS], [m4_default($2,_AC_LANG_PREFIX[FLAGS])])dnl
-AS_VAR_SET_IF(FLAGS,
- [case " AS_VAR_GET(FLAGS) " in
- *" $1 "*)
- AC_RUN_LOG([: FLAGS already contains $1])
- ;;
- *)
- AC_RUN_LOG([: FLAGS="$FLAGS $1"])
- AS_VAR_SET(FLAGS, ["AS_VAR_GET(FLAGS) $1"])
- ;;
- esac],
- [AS_VAR_SET(FLAGS,["$1"])])
+[dnl
+AC_PREREQ(2.64)dnl for _AC_LANG_PREFIX and AS_VAR_SET_IF
+AS_VAR_PUSHDEF([FLAGS], [m4_default($2,_AC_LANG_PREFIX[FLAGS])])
+AS_VAR_SET_IF(FLAGS,[
+ AS_CASE([" AS_VAR_GET(FLAGS) "],
+ [*" $1 "*], [AC_RUN_LOG([: FLAGS already contains $1])],
+ [
+ AS_VAR_APPEND(FLAGS," $1")
+ AC_RUN_LOG([: FLAGS="$FLAGS"])
+ ])
+ ],
+ [
+ AS_VAR_SET(FLAGS,[$1])
+ AC_RUN_LOG([: FLAGS="$FLAGS"])
+ ])
AS_VAR_POPDEF([FLAGS])dnl
])dnl AX_APPEND_FLAG
diff --git a/m4/ax_append_link_flags.m4 b/m4/ax_append_link_flags.m4
index 48cbd4b..c73ddaf 100644
--- a/m4/ax_append_link_flags.m4
+++ b/m4/ax_append_link_flags.m4
@@ -52,11 +52,11 @@
# modified version of the Autoconf Macro, you may extend this special
# exception to the GPL to apply to your modified version as well.
-#serial 3
+#serial 4
AC_DEFUN([AX_APPEND_LINK_FLAGS],
-[AC_REQUIRE([AX_CHECK_LINK_FLAG])
-AC_REQUIRE([AX_APPEND_FLAG])
+[AX_REQUIRE_DEFINED([AX_CHECK_LINK_FLAG])
+AX_REQUIRE_DEFINED([AX_APPEND_FLAG])
for flag in $1; do
AX_CHECK_LINK_FLAG([$flag], [AX_APPEND_FLAG([$flag], [m4_default([$2],
[LDFLAGS])])], [], [$3])
done
diff --git a/m4/ax_cflags_force_c89.m4 b/m4/ax_cflags_force_c89.m4
index 19ada7f..1597b25 100644
--- a/m4/ax_cflags_force_c89.m4
+++ b/m4/ax_cflags_force_c89.m4
@@ -55,7 +55,7 @@
# modified version of the Autoconf Macro, you may extend this special
# exception to the GPL to apply to your modified version as well.
-#serial 8
+#serial 9
AC_DEFUN([AX_CFLAGS_FORCE_C89],[dnl
AS_VAR_PUSHDEF([FLAGS],[CFLAGS])dnl
@@ -83,7 +83,7 @@ done
AC_LANG_RESTORE
])
AS_VAR_POPDEF([FLAGS])dnl
-AC_REQUIRE([AX_APPEND_FLAG])
+AX_REQUIRE_DEFINED([AX_APPEND_FLAG])
case ".$VAR" in
.ok|.ok,*) m4_ifvaln($3,$3) ;;
.|.no|.no,*) m4_default($4,[m4_ifval($2,[AX_APPEND_FLAG([$2], [$1])])]) ;;
diff --git a/m4/ax_cflags_strict_prototypes.m4
b/m4/ax_cflags_strict_prototypes.m4
index 2ac34be..3ad4bf0 100644
--- a/m4/ax_cflags_strict_prototypes.m4
+++ b/m4/ax_cflags_strict_prototypes.m4
@@ -58,7 +58,7 @@
# modified version of the Autoconf Macro, you may extend this special
# exception to the GPL to apply to your modified version as well.
-#serial 12
+#serial 13
AC_DEFUN([AX_FLAGS_STRICT_PROTOTYPES],[dnl
AS_VAR_PUSHDEF([FLAGS],[_AC_LANG_PREFIX[]FLAGS])dnl
@@ -96,7 +96,7 @@ esac
FLAGS="$ac_save_[]FLAGS"
])
AS_VAR_POPDEF([FLAGS])dnl
-AC_REQUIRE([AX_APPEND_FLAG])
+AX_REQUIRE_DEFINED([AX_APPEND_FLAG])
case ".$VAR" in
.ok|.ok,*) m4_ifvaln($3,$3) ;;
.|.no|.no,*) m4_default($4,[m4_ifval($2,[AX_APPEND_FLAG([$2], [$1])])]) ;;
diff --git a/m4/ax_cflags_warn_all.m4 b/m4/ax_cflags_warn_all.m4
index 0fa3e18..1f07799 100644
--- a/m4/ax_cflags_warn_all.m4
+++ b/m4/ax_cflags_warn_all.m4
@@ -58,7 +58,7 @@
# modified version of the Autoconf Macro, you may extend this special
# exception to the GPL to apply to your modified version as well.
-#serial 14
+#serial 15
AC_DEFUN([AX_FLAGS_WARN_ALL],[dnl
AS_VAR_PUSHDEF([FLAGS],[_AC_LANG_PREFIX[]FLAGS])dnl
@@ -84,7 +84,7 @@ done
FLAGS="$ac_save_[]FLAGS"
])
AS_VAR_POPDEF([FLAGS])dnl
-AC_REQUIRE([AX_APPEND_FLAG])
+AX_REQUIRE_DEFINED([AX_APPEND_FLAG])
case ".$VAR" in
.ok|.ok,*) m4_ifvaln($3,$3) ;;
.|.no|.no,*) m4_default($4,[m4_ifval($2,[AX_APPEND_FLAG([$2], [$1])])]) ;;
diff --git a/m4/ax_check_compile_flag.m4 b/m4/ax_check_compile_flag.m4
index c3a8d69..ca36397 100644
--- a/m4/ax_check_compile_flag.m4
+++ b/m4/ax_check_compile_flag.m4
@@ -4,7 +4,7 @@
#
# SYNOPSIS
#
-# AX_CHECK_COMPILE_FLAG(FLAG, [ACTION-SUCCESS], [ACTION-FAILURE],
[EXTRA-FLAGS])
+# AX_CHECK_COMPILE_FLAG(FLAG, [ACTION-SUCCESS], [ACTION-FAILURE],
[EXTRA-FLAGS], [INPUT])
#
# DESCRIPTION
#
@@ -19,6 +19,8 @@
# the flags: "CFLAGS EXTRA-FLAGS FLAG". This can for example be used to
# force the compiler to issue an error when a bad flag is given.
#
+# INPUT gives an alternative input source to AC_COMPILE_IFELSE.
+#
# NOTE: Implementation based on AX_CFLAGS_GCC_OPTION. Please keep this
# macro in sync with AX_CHECK_{PREPROC,LINK}_FLAG.
#
@@ -53,19 +55,19 @@
# modified version of the Autoconf Macro, you may extend this special
# exception to the GPL to apply to your modified version as well.
-#serial 2
+#serial 4
AC_DEFUN([AX_CHECK_COMPILE_FLAG],
-[AC_PREREQ(2.59)dnl for _AC_LANG_PREFIX
+[AC_PREREQ(2.64)dnl for _AC_LANG_PREFIX and AS_VAR_IF
AS_VAR_PUSHDEF([CACHEVAR],[ax_cv_check_[]_AC_LANG_ABBREV[]flags_$4_$1])dnl
AC_CACHE_CHECK([whether _AC_LANG compiler accepts $1], CACHEVAR, [
ax_check_save_flags=$[]_AC_LANG_PREFIX[]FLAGS
_AC_LANG_PREFIX[]FLAGS="$[]_AC_LANG_PREFIX[]FLAGS $4 $1"
- AC_COMPILE_IFELSE([AC_LANG_PROGRAM()],
+ AC_COMPILE_IFELSE([m4_default([$5],[AC_LANG_PROGRAM()])],
[AS_VAR_SET(CACHEVAR,[yes])],
[AS_VAR_SET(CACHEVAR,[no])])
_AC_LANG_PREFIX[]FLAGS=$ax_check_save_flags])
-AS_IF([test x"AS_VAR_GET(CACHEVAR)" = xyes],
+AS_VAR_IF(CACHEVAR,yes,
[m4_default([$2], :)],
[m4_default([$3], :)])
AS_VAR_POPDEF([CACHEVAR])dnl
diff --git a/m4/ax_check_link_flag.m4 b/m4/ax_check_link_flag.m4
index e2d0d36..eb01a6c 100644
--- a/m4/ax_check_link_flag.m4
+++ b/m4/ax_check_link_flag.m4
@@ -4,7 +4,7 @@
#
# SYNOPSIS
#
-# AX_CHECK_LINK_FLAG(FLAG, [ACTION-SUCCESS], [ACTION-FAILURE], [EXTRA-FLAGS])
+# AX_CHECK_LINK_FLAG(FLAG, [ACTION-SUCCESS], [ACTION-FAILURE],
[EXTRA-FLAGS], [INPUT])
#
# DESCRIPTION
#
@@ -19,6 +19,8 @@
# EXTRA-FLAGS FLAG". This can for example be used to force the linker to
# issue an error when a bad flag is given.
#
+# INPUT gives an alternative input source to AC_LINK_IFELSE.
+#
# NOTE: Implementation based on AX_CFLAGS_GCC_OPTION. Please keep this
# macro in sync with AX_CHECK_{PREPROC,COMPILE}_FLAG.
#
@@ -53,18 +55,19 @@
# modified version of the Autoconf Macro, you may extend this special
# exception to the GPL to apply to your modified version as well.
-#serial 2
+#serial 4
AC_DEFUN([AX_CHECK_LINK_FLAG],
-[AS_VAR_PUSHDEF([CACHEVAR],[ax_cv_check_ldflags_$4_$1])dnl
+[AC_PREREQ(2.64)dnl for _AC_LANG_PREFIX and AS_VAR_IF
+AS_VAR_PUSHDEF([CACHEVAR],[ax_cv_check_ldflags_$4_$1])dnl
AC_CACHE_CHECK([whether the linker accepts $1], CACHEVAR, [
ax_check_save_flags=$LDFLAGS
LDFLAGS="$LDFLAGS $4 $1"
- AC_LINK_IFELSE([AC_LANG_PROGRAM()],
+ AC_LINK_IFELSE([m4_default([$5],[AC_LANG_PROGRAM()])],
[AS_VAR_SET(CACHEVAR,[yes])],
[AS_VAR_SET(CACHEVAR,[no])])
LDFLAGS=$ax_check_save_flags])
-AS_IF([test x"AS_VAR_GET(CACHEVAR)" = xyes],
+AS_VAR_IF(CACHEVAR,yes,
[m4_default([$2], :)],
[m4_default([$3], :)])
AS_VAR_POPDEF([CACHEVAR])dnl
diff --git a/m4/ax_compiler_flags.m4 b/m4/ax_compiler_flags.m4
new file mode 100644
index 0000000..c52ae7d
--- /dev/null
+++ b/m4/ax_compiler_flags.m4
@@ -0,0 +1,158 @@
+# ===========================================================================
+# http://www.gnu.org/software/autoconf-archive/ax_compiler_flags.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+# AX_COMPILER_FLAGS([CFLAGS-VARIABLE], [LDFLAGS-VARIABLE], [IS-RELEASE],
[EXTRA-BASE-CFLAGS], [EXTRA-YES-CFLAGS], [UNUSED], [UNUSED], [UNUSED],
[EXTRA-BASE-LDFLAGS], [EXTRA-YES-LDFLAGS], [UNUSED], [UNUSED], [UNUSED])
+#
+# DESCRIPTION
+#
+# Check for the presence of an --enable-compile-warnings option to
+# configure, defaulting to "error" in normal operation, or "yes" if
+# IS-RELEASE is equal to "yes". Return the value in the variable
+# $ax_enable_compile_warnings.
+#
+# Depending on the value of --enable-compile-warnings, different compiler
+# warnings are checked to see if they work with the current compiler and,
+# if so, are appended to CFLAGS-VARIABLE and LDFLAGS-VARIABLE. This
+# allows a consistent set of baseline compiler warnings to be used across
+# a code base, irrespective of any warnings enabled locally by individual
+# developers. By standardising the warnings used by all developers of a
+# project, the project can commit to a zero-warnings policy, using -Werror
+# to prevent compilation if new warnings are introduced. This makes
+# catching bugs which are flagged by warnings a lot easier.
+#
+# By providing a consistent --enable-compile-warnings argument across all
+# projects using this macro, continuous integration systems can easily be
+# configured the same for all projects. Automated systems or build
+# systems aimed at beginners may want to pass the --disable-Werror
+# argument to unconditionally prevent warnings being fatal.
+#
+# --enable-compile-warnings can take the values:
+#
+# * no: Base compiler warnings only; not even -Wall.
+# * yes: The above, plus a broad range of useful warnings.
+# * error: The above, plus -Werror so that all warnings are fatal.
+# Use --disable-Werror to override this and disable fatal
+# warnings.
+#
+# The set of base and enabled flags can be augmented using the
+# EXTRA-*-CFLAGS and EXTRA-*-LDFLAGS variables, which are tested and
+# appended to the output variable if --enable-compile-warnings is not
+# "no". Flags should not be disabled using these arguments, as the entire
+# point of AX_COMPILER_FLAGS is to enforce a consistent set of useful
+# compiler warnings on code, using warnings which have been chosen for low
+# false positive rates. If a compiler emits false positives for a
+# warning, a #pragma should be used in the code to disable the warning
+# locally. See:
+#
+#
https://gcc.gnu.org/onlinedocs/gcc-4.9.2/gcc/Diagnostic-Pragmas.html#Diagnostic-Pragmas
+#
+# The EXTRA-* variables should only be used to supply extra warning flags,
+# and not general purpose compiler flags, as they are controlled by
+# configure options such as --disable-Werror.
+#
+# IS-RELEASE can be used to disable -Werror when making a release, which
+# is useful for those hairy moments when you just want to get the release
+# done as quickly as possible. Set it to "yes" to disable -Werror. By
+# default, it uses the value of $ax_is_release, so if you are using the
+# AX_IS_RELEASE macro, there is no need to pass this parameter. For
+# example:
+#
+# AX_IS_RELEASE([git-directory])
+# AX_COMPILER_FLAGS()
+#
+# CFLAGS-VARIABLE defaults to WARN_CFLAGS, and LDFLAGS-VARIABLE defaults
+# to WARN_LDFLAGS. Both variables are AC_SUBST-ed by this macro, but must
+# be manually added to the CFLAGS and LDFLAGS variables for each target in
+# the code base.
+#
+# If C++ language support is enabled with AC_PROG_CXX, which must occur
+# before this macro in configure.ac, warning flags for the C++ compiler
+# are AC_SUBST-ed as WARN_CXXFLAGS, and must be manually added to the
+# CXXFLAGS variables for each target in the code base. EXTRA-*-CFLAGS can
+# be used to augment the base and enabled flags.
+#
+# Warning flags for g-ir-scanner (from GObject Introspection) are
+# AC_SUBST-ed as WARN_SCANNERFLAGS. This variable must be manually added
+# to the SCANNERFLAGS variable for each GIR target in the code base. If
+# extra g-ir-scanner flags need to be enabled, the AX_COMPILER_FLAGS_GIR
+# macro must be invoked manually.
+#
+# AX_COMPILER_FLAGS may add support for other tools in future, in addition
+# to the compiler and linker. No extra EXTRA-* variables will be added
+# for those tools, and all extra support will still use the single
+# --enable-compile-warnings configure option. For finer grained control
+# over the flags for individual tools, use AX_COMPILER_FLAGS_CFLAGS,
+# AX_COMPILER_FLAGS_LDFLAGS and AX_COMPILER_FLAGS_* for new tools.
+#
+# The UNUSED variables date from a previous version of this macro, and are
+# automatically appended to the preceding non-UNUSED variable. They should
+# be left empty in new uses of the macro.
+#
+# LICENSE
+#
+# Copyright (c) 2014, 2015 Philip Withnall <phi...@tecnocode.co.uk>
+# Copyright (c) 2015 David King <amigad...@amigadave.com>
+#
+# Copying and distribution of this file, with or without modification, are
+# permitted in any medium without royalty provided the copyright notice
+# and this notice are preserved. This file is offered as-is, without any
+# warranty.
+
+#serial 12
+
+# _AX_COMPILER_FLAGS_LANG([LANGNAME])
+m4_defun([_AX_COMPILER_FLAGS_LANG],
+[m4_ifdef([_AX_COMPILER_FLAGS_LANG_]$1[_enabled], [],
+ [m4_define([_AX_COMPILER_FLAGS_LANG_]$1[_enabled], [])dnl
+ AX_REQUIRE_DEFINED([AX_COMPILER_FLAGS_]$1[FLAGS])])dnl
+])
+
+AC_DEFUN([AX_COMPILER_FLAGS],[
+ # C support is enabled by default.
+ _AX_COMPILER_FLAGS_LANG([C])
+ # Only enable C++ support if AC_PROG_CXX is called. The redefinition of
+ # AC_PROG_CXX is so that a fatal error is emitted if this macro is called
+ # before AC_PROG_CXX, which would otherwise cause no C++ warnings to be
+ # checked.
+ AC_PROVIDE_IFELSE([AC_PROG_CXX],
+ [_AX_COMPILER_FLAGS_LANG([CXX])],
+ [m4_define([AC_PROG_CXX],
defn([AC_PROG_CXX])[_AX_COMPILER_FLAGS_LANG([CXX])])])
+ AX_REQUIRE_DEFINED([AX_COMPILER_FLAGS_LDFLAGS])
+
+ # Default value for IS-RELEASE is $ax_is_release
+ ax_compiler_flags_is_release=m4_tolower(m4_normalize(ifelse([$3],,
+
[$ax_is_release],
+ [$3])))
+
+ AC_ARG_ENABLE([compile-warnings],
+
AS_HELP_STRING([--enable-compile-warnings=@<:@no/yes/error@:>@],
+ [Enable compiler warnings and errors]),,
+ [AS_IF([test "$ax_compiler_flags_is_release" = "yes"],
+ [enable_compile_warnings="yes"],
+ [enable_compile_warnings="error"])])
+ AC_ARG_ENABLE([Werror],
+ AS_HELP_STRING([--disable-Werror],
+ [Unconditionally make all compiler warnings
non-fatal]),,
+ [enable_Werror=maybe])
+
+ # Return the user’s chosen warning level
+ AS_IF([test "$enable_Werror" = "no" -a \
+ "$enable_compile_warnings" = "error"],[
+ enable_compile_warnings="yes"
+ ])
+
+ ax_enable_compile_warnings=$enable_compile_warnings
+
+ AX_COMPILER_FLAGS_CFLAGS([$1],[$ax_compiler_flags_is_release],
+ [$4],[$5 $6 $7 $8])
+ m4_ifdef([_AX_COMPILER_FLAGS_LANG_CXX_enabled],
+ [AX_COMPILER_FLAGS_CXXFLAGS([WARN_CXXFLAGS],
+ [$ax_compiler_flags_is_release],
+ [$4],[$5 $6 $7 $8])])
+ AX_COMPILER_FLAGS_LDFLAGS([$2],[$ax_compiler_flags_is_release],
+ [$9],[$10 $11 $12 $13])
+ AX_COMPILER_FLAGS_GIR([WARN_SCANNERFLAGS],[$ax_compiler_flags_is_release])
+])dnl AX_COMPILER_FLAGS
diff --git a/m4/ax_compiler_flags_cflags.m4 b/m4/ax_compiler_flags_cflags.m4
new file mode 100644
index 0000000..295d7fe
--- /dev/null
+++ b/m4/ax_compiler_flags_cflags.m4
@@ -0,0 +1,132 @@
+# ============================================================================
+# http://www.gnu.org/software/autoconf-archive/ax_compiler_flags_cflags.html
+# ============================================================================
+#
+# SYNOPSIS
+#
+# AX_COMPILER_FLAGS_CFLAGS([VARIABLE], [IS-RELEASE], [EXTRA-BASE-FLAGS],
[EXTRA-YES-FLAGS])
+#
+# DESCRIPTION
+#
+# Add warning flags for the C compiler to VARIABLE, which defaults to
+# WARN_CFLAGS. VARIABLE is AC_SUBST-ed by this macro, but must be
+# manually added to the CFLAGS variable for each target in the code base.
+#
+# This macro depends on the environment set up by AX_COMPILER_FLAGS.
+# Specifically, it uses the value of $ax_enable_compile_warnings to decide
+# which flags to enable.
+#
+# LICENSE
+#
+# Copyright (c) 2014, 2015 Philip Withnall <phi...@tecnocode.co.uk>
+#
+# Copying and distribution of this file, with or without modification, are
+# permitted in any medium without royalty provided the copyright notice
+# and this notice are preserved. This file is offered as-is, without any
+# warranty.
+
+#serial 8
+
+AC_DEFUN([AX_COMPILER_FLAGS_CFLAGS],[
+ AX_REQUIRE_DEFINED([AX_APPEND_COMPILE_FLAGS])
+ AX_REQUIRE_DEFINED([AX_APPEND_FLAG])
+ AX_REQUIRE_DEFINED([AX_CHECK_COMPILE_FLAG])
+
+ # Variable names
+ m4_define(ax_warn_cflags_variable,
+ [m4_normalize(ifelse([$1],,[WARN_CFLAGS],[$1]))])
+
+ AC_LANG_PUSH([C])
+
+ # Always pass -Werror=unknown-warning-option to get Clang to fail on bad
+ # flags, otherwise they are always appended to the warn_cflags variable,
and
+ # Clang warns on them for every compilation unit.
+ # If this is passed to GCC, it will explode, so the flag must be enabled
+ # conditionally.
+ AX_CHECK_COMPILE_FLAG([-Werror=unknown-warning-option],[
+ ax_compiler_flags_test="-Werror=unknown-warning-option"
+ ],[
+ ax_compiler_flags_test=""
+ ])
+
+ # Base flags
+ AX_APPEND_COMPILE_FLAGS([ dnl
+ -fno-strict-aliasing dnl
+ $3 dnl
+ ],ax_warn_cflags_variable,[$ax_compiler_flags_test])
+
+ AS_IF([test "$ax_enable_compile_warnings" != "no"],[
+ # "yes" flags
+ AX_APPEND_COMPILE_FLAGS([ dnl
+ -Wall dnl
+ -Wextra dnl
+ -Wundef dnl
+ -Wnested-externs dnl
+ -Wwrite-strings dnl
+ -Wpointer-arith dnl
+ -Wmissing-declarations dnl
+ -Wmissing-prototypes dnl
+ -Wstrict-prototypes dnl
+ -Wredundant-decls dnl
+ -Wno-unused-parameter dnl
+ -Wno-missing-field-initializers dnl
+ -Wdeclaration-after-statement dnl
+ -Wformat=2 dnl
+ -Wold-style-definition dnl
+ -Wcast-align dnl
+ -Wformat-nonliteral dnl
+ -Wformat-security dnl
+ -Wsign-compare dnl
+ -Wstrict-aliasing dnl
+ -Wshadow dnl
+ -Winline dnl
+ -Wpacked dnl
+ -Wmissing-format-attribute dnl
+ -Wmissing-noreturn dnl
+ -Winit-self dnl
+ -Wredundant-decls dnl
+ -Wmissing-include-dirs dnl
+ -Wunused-but-set-variable dnl
+ -Warray-bounds dnl
+ -Wimplicit-function-declaration dnl
+ -Wreturn-type dnl
+ -Wswitch-enum dnl
+ -Wswitch-default dnl
+ $4 dnl
+ $5 dnl
+ $6 dnl
+ $7 dnl
+ ],ax_warn_cflags_variable,[$ax_compiler_flags_test])
+ ])
+ AS_IF([test "$ax_enable_compile_warnings" = "error"],[
+ # "error" flags; -Werror has to be appended unconditionally because
+ # it’s not possible to test for
+ #
+ # suggest-attribute=format is disabled because it gives too many false
+ # positives
+ AX_APPEND_FLAG([-Werror],ax_warn_cflags_variable)
+
+ AX_APPEND_COMPILE_FLAGS([ dnl
+ -Wno-suggest-attribute=format dnl
+ ],ax_warn_cflags_variable,[$ax_compiler_flags_test])
+ ])
+
+ # In the flags below, when disabling specific flags, always add *both*
+ # -Wno-foo and -Wno-error=foo. This fixes the situation where (for example)
+ # we enable -Werror, disable a flag, and a build bot passes CFLAGS=-Wall,
+ # which effectively turns that flag back on again as an error.
+ for flag in $ax_warn_cflags_variable; do
+ AS_CASE([$flag],
+ [-Wno-*=*],[],
+ [-Wno-*],[
+ AX_APPEND_COMPILE_FLAGS([-Wno-error=${flag:5}],
+ ax_warn_cflags_variable,
+ [$ax_compiler_flags_test])
+ ])
+ done
+
+ AC_LANG_POP([C])
+
+ # Substitute the variables
+ AC_SUBST(ax_warn_cflags_variable)
+])dnl AX_COMPILER_FLAGS
diff --git a/m4/ax_compiler_flags_cxxflags.m4 b/m4/ax_compiler_flags_cxxflags.m4
new file mode 100644
index 0000000..b768cfa
--- /dev/null
+++ b/m4/ax_compiler_flags_cxxflags.m4
@@ -0,0 +1,128 @@
+#
==============================================================================
+# http://www.gnu.org/software/autoconf-archive/ax_compiler_flags_cxxflags.html
+#
==============================================================================
+#
+# SYNOPSIS
+#
+# AX_COMPILER_FLAGS_CXXFLAGS([VARIABLE], [IS-RELEASE], [EXTRA-BASE-FLAGS],
[EXTRA-YES-FLAGS])
+#
+# DESCRIPTION
+#
+# Add warning flags for the C++ compiler to VARIABLE, which defaults to
+# WARN_CXXFLAGS. VARIABLE is AC_SUBST-ed by this macro, but must be
+# manually added to the CXXFLAGS variable for each target in the code
+# base.
+#
+# This macro depends on the environment set up by AX_COMPILER_FLAGS.
+# Specifically, it uses the value of $ax_enable_compile_warnings to decide
+# which flags to enable.
+#
+# LICENSE
+#
+# Copyright (c) 2015 David King <amigad...@amigadave.com>
+#
+# Copying and distribution of this file, with or without modification, are
+# permitted in any medium without royalty provided the copyright notice
+# and this notice are preserved. This file is offered as-is, without any
+# warranty.
+
+#serial 4
+
+AC_DEFUN([AX_COMPILER_FLAGS_CXXFLAGS],[
+ AX_REQUIRE_DEFINED([AX_APPEND_COMPILE_FLAGS])
+ AX_REQUIRE_DEFINED([AX_APPEND_FLAG])
+ AX_REQUIRE_DEFINED([AX_CHECK_COMPILE_FLAG])
+
+ # Variable names
+ m4_define(ax_warn_cxxflags_variable,
+ [m4_normalize(ifelse([$1],,[WARN_CXXFLAGS],[$1]))])
+
+ AC_LANG_PUSH([C++])
+
+ # Always pass -Werror=unknown-warning-option to get Clang to fail on bad
+ # flags, otherwise they are always appended to the warn_cxxflags variable,
+ # and Clang warns on them for every compilation unit.
+ # If this is passed to GCC, it will explode, so the flag must be enabled
+ # conditionally.
+ AX_CHECK_COMPILE_FLAG([-Werror=unknown-warning-option],[
+ ax_compiler_flags_test="-Werror=unknown-warning-option"
+ ],[
+ ax_compiler_flags_test=""
+ ])
+
+ # Base flags
+ AX_APPEND_COMPILE_FLAGS([ dnl
+ -fno-strict-aliasing dnl
+ $3 dnl
+ ],ax_warn_cxxflags_variable,[$ax_compiler_flags_test])
+
+ AS_IF([test "$ax_enable_compile_warnings" != "no"],[
+ # "yes" flags
+ AX_APPEND_COMPILE_FLAGS([ dnl
+ -Wall dnl
+ -Wextra dnl
+ -Wundef dnl
+ -Wwrite-strings dnl
+ -Wpointer-arith dnl
+ -Wmissing-declarations dnl
+ -Wredundant-decls dnl
+ -Wno-unused-parameter dnl
+ -Wno-missing-field-initializers dnl
+ -Wformat=2 dnl
+ -Wcast-align dnl
+ -Wformat-nonliteral dnl
+ -Wformat-security dnl
+ -Wsign-compare dnl
+ -Wstrict-aliasing dnl
+ -Wshadow dnl
+ -Winline dnl
+ -Wpacked dnl
+ -Wmissing-format-attribute dnl
+ -Wmissing-noreturn dnl
+ -Winit-self dnl
+ -Wredundant-decls dnl
+ -Wmissing-include-dirs dnl
+ -Wunused-but-set-variable dnl
+ -Warray-bounds dnl
+ -Wreturn-type dnl
+ -Wno-overloaded-virtual dnl
+ -Wswitch-enum dnl
+ -Wswitch-default dnl
+ $4 dnl
+ $5 dnl
+ $6 dnl
+ $7 dnl
+ ],ax_warn_cxxflags_variable,[$ax_compiler_flags_test])
+ ])
+ AS_IF([test "$ax_enable_compile_warnings" = "error"],[
+ # "error" flags; -Werror has to be appended unconditionally because
+ # it’s not possible to test for
+ #
+ # suggest-attribute=format is disabled because it gives too many false
+ # positives
+ AX_APPEND_FLAG([-Werror],ax_warn_cxxflags_variable)
+
+ AX_APPEND_COMPILE_FLAGS([ dnl
+ -Wno-suggest-attribute=format dnl
+ ],ax_warn_cxxflags_variable,[$ax_compiler_flags_test])
+ ])
+
+ # In the flags below, when disabling specific flags, always add *both*
+ # -Wno-foo and -Wno-error=foo. This fixes the situation where (for example)
+ # we enable -Werror, disable a flag, and a build bot passes CXXFLAGS=-Wall,
+ # which effectively turns that flag back on again as an error.
+ for flag in $ax_warn_cxxflags_variable; do
+ AS_CASE([$flag],
+ [-Wno-*=*],[],
+ [-Wno-*],[
+ AX_APPEND_COMPILE_FLAGS([-Wno-error=${flag:5}],
+ ax_warn_cxxflags_variable,
+ [$ax_compiler_flags_test])
+ ])
+ done
+
+ AC_LANG_POP([C++])
+
+ # Substitute the variables
+ AC_SUBST(ax_warn_cxxflags_variable)
+])dnl AX_COMPILER_FLAGS_CXXFLAGS
diff --git a/m4/ax_compiler_flags_gir.m4 b/m4/ax_compiler_flags_gir.m4
new file mode 100644
index 0000000..180f50d
--- /dev/null
+++ b/m4/ax_compiler_flags_gir.m4
@@ -0,0 +1,60 @@
+# ===========================================================================
+# http://www.gnu.org/software/autoconf-archive/ax_compiler_flags_gir.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+# AX_COMPILER_FLAGS_GIR([VARIABLE], [IS-RELEASE], [EXTRA-BASE-FLAGS],
[EXTRA-YES-FLAGS])
+#
+# DESCRIPTION
+#
+# Add warning flags for the g-ir-scanner (from GObject Introspection) to
+# VARIABLE, which defaults to WARN_SCANNERFLAGS. VARIABLE is AC_SUBST-ed
+# by this macro, but must be manually added to the SCANNERFLAGS variable
+# for each GIR target in the code base.
+#
+# This macro depends on the environment set up by AX_COMPILER_FLAGS.
+# Specifically, it uses the value of $ax_enable_compile_warnings to decide
+# which flags to enable.
+#
+# LICENSE
+#
+# Copyright (c) 2015 Philip Withnall <phi...@tecnocode.co.uk>
+#
+# Copying and distribution of this file, with or without modification, are
+# permitted in any medium without royalty provided the copyright notice
+# and this notice are preserved. This file is offered as-is, without any
+# warranty.
+
+#serial 4
+
+AC_DEFUN([AX_COMPILER_FLAGS_GIR],[
+ AX_REQUIRE_DEFINED([AX_APPEND_FLAG])
+
+ # Variable names
+ m4_define(ax_warn_scannerflags_variable,
+ [m4_normalize(ifelse([$1],,[WARN_SCANNERFLAGS],[$1]))])
+
+ # Base flags
+ AX_APPEND_FLAG([$3],ax_warn_scannerflags_variable)
+
+ AS_IF([test "$ax_enable_compile_warnings" != "no"],[
+ # "yes" flags
+ AX_APPEND_FLAG([ dnl
+ --warn-all dnl
+ $4 dnl
+ $5 dnl
+ $6 dnl
+ $7 dnl
+ ],ax_warn_scannerflags_variable)
+ ])
+ AS_IF([test "$ax_enable_compile_warnings" = "error"],[
+ # "error" flags
+ AX_APPEND_FLAG([ dnl
+ --warn-error dnl
+ ],ax_warn_scannerflags_variable)
+ ])
+
+ # Substitute the variables
+ AC_SUBST(ax_warn_scannerflags_variable)
+])dnl AX_COMPILER_FLAGS
diff --git a/m4/ax_compiler_flags_ldflags.m4 b/m4/ax_compiler_flags_ldflags.m4
new file mode 100644
index 0000000..f9077fc
--- /dev/null
+++ b/m4/ax_compiler_flags_ldflags.m4
@@ -0,0 +1,75 @@
+# =============================================================================
+# http://www.gnu.org/software/autoconf-archive/ax_compiler_flags_ldflags.html
+# =============================================================================
+#
+# SYNOPSIS
+#
+# AX_COMPILER_FLAGS_LDFLAGS([VARIABLE], [IS-RELEASE], [EXTRA-BASE-FLAGS],
[EXTRA-YES-FLAGS])
+#
+# DESCRIPTION
+#
+# Add warning flags for the linker to VARIABLE, which defaults to
+# WARN_LDFLAGS. VARIABLE is AC_SUBST-ed by this macro, but must be
+# manually added to the LDFLAGS variable for each target in the code base.
+#
+# This macro depends on the environment set up by AX_COMPILER_FLAGS.
+# Specifically, it uses the value of $ax_enable_compile_warnings to decide
+# which flags to enable.
+#
+# LICENSE
+#
+# Copyright (c) 2014, 2015 Philip Withnall <phi...@tecnocode.co.uk>
+#
+# Copying and distribution of this file, with or without modification, are
+# permitted in any medium without royalty provided the copyright notice
+# and this notice are preserved. This file is offered as-is, without any
+# warranty.
+
+#serial 3
+
+AC_DEFUN([AX_COMPILER_FLAGS_LDFLAGS],[
+ AX_REQUIRE_DEFINED([AX_APPEND_COMPILE_FLAGS])
+ AX_REQUIRE_DEFINED([AX_APPEND_FLAG])
+ AX_REQUIRE_DEFINED([AX_CHECK_COMPILE_FLAG])
+
+ # Variable names
+ m4_define(ax_warn_ldflags_variable,
+ [m4_normalize(ifelse([$1],,[WARN_LDFLAGS],[$1]))])
+
+ # Always pass -Werror=unknown-warning-option to get Clang to fail on bad
+ # flags, otherwise they are always appended to the warn_ldflags variable,
+ # and Clang warns on them for every compilation unit.
+ # If this is passed to GCC, it will explode, so the flag must be enabled
+ # conditionally.
+ AX_CHECK_COMPILE_FLAG([-Werror=unknown-warning-option],[
+ ax_compiler_flags_test="-Werror=unknown-warning-option"
+ ],[
+ ax_compiler_flags_test=""
+ ])
+
+ # Base flags
+ AX_APPEND_COMPILE_FLAGS([ dnl
+ -Wl,--no-as-needed dnl
+ $3 dnl
+ ],ax_warn_ldflags_variable,[$ax_compiler_flags_test])
+
+ AS_IF([test "$ax_enable_compile_warnings" != "no"],[
+ # "yes" flags
+ AX_APPEND_COMPILE_FLAGS([$4 $5 $6 $7],
+ ax_warn_ldflags_variable,
+ [$ax_compiler_flags_test])
+ ])
+ AS_IF([test "$ax_enable_compile_warnings" = "error"],[
+ # "error" flags; -Werror has to be appended unconditionally because
+ # it’s not possible to test for
+ #
+ # suggest-attribute=format is disabled because it gives too many false
+ # positives
+ AX_APPEND_COMPILE_FLAGS([ dnl
+ -Wl,--fatal-warnings dnl
+ ],ax_warn_ldflags_variable,[$ax_compiler_flags_test])
+ ])
+
+ # Substitute the variables
+ AC_SUBST(ax_warn_ldflags_variable)
+])dnl AX_COMPILER_FLAGS
diff --git a/m4/ax_require_defined.m4 b/m4/ax_require_defined.m4
new file mode 100644
index 0000000..cae1111
--- /dev/null
+++ b/m4/ax_require_defined.m4
@@ -0,0 +1,37 @@
+# ===========================================================================
+# http://www.gnu.org/software/autoconf-archive/ax_require_defined.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+# AX_REQUIRE_DEFINED(MACRO)
+#
+# DESCRIPTION
+#
+# AX_REQUIRE_DEFINED is a simple helper for making sure other macros have
+# been defined and thus are available for use. This avoids random issues
+# where a macro isn't expanded. Instead the configure script emits a
+# non-fatal:
+#
+# ./configure: line 1673: AX_CFLAGS_WARN_ALL: command not found
+#
+# It's like AC_REQUIRE except it doesn't expand the required macro.
+#
+# Here's an example:
+#
+# AX_REQUIRE_DEFINED([AX_CHECK_LINK_FLAG])
+#
+# LICENSE
+#
+# Copyright (c) 2014 Mike Frysinger <vap...@gentoo.org>
+#
+# Copying and distribution of this file, with or without modification, are
+# permitted in any medium without royalty provided the copyright notice
+# and this notice are preserved. This file is offered as-is, without any
+# warranty.
+
+#serial 1
+
+AC_DEFUN([AX_REQUIRE_DEFINED], [dnl
+ m4_ifndef([$1], [m4_fatal([macro ]$1[ is not defined; is a m4 file
missing?])])
+])dnl AX_REQUIRE_DEFINED
