build: update various m4 macros

m4/ax_compiler_flags_cflags.m4

@@ -25,7 +25,7 @@
 #   and this notice are preserved.  This file is offered as-is, without any
 #   warranty.
 
-#serial 11
+#serial 12
 
 AC_DEFUN([AX_COMPILER_FLAGS_CFLAGS],[
     AC_REQUIRE([AC_PROG_SED])
@@ -34,7 +34,7 @@ AC_DEFUN([AX_COMPILER_FLAGS_CFLAGS],[
     AX_REQUIRE_DEFINED([AX_CHECK_COMPILE_FLAG])
 
     # Variable names
-    m4_define(ax_warn_cflags_variable,
+    m4_define([ax_warn_cflags_variable],
               [m4_normalize(ifelse([$1],,[WARN_CFLAGS],[$1]))])
 
     AC_LANG_PUSH([C])

m4/ax_compiler_flags_cxxflags.m4

@@ -26,7 +26,7 @@
 #   and this notice are preserved.  This file is offered as-is, without any
 #   warranty.
 
-#serial 7
+#serial 8
 
 AC_DEFUN([AX_COMPILER_FLAGS_CXXFLAGS],[
     AC_REQUIRE([AC_PROG_SED])
@@ -35,7 +35,7 @@ AC_DEFUN([AX_COMPILER_FLAGS_CXXFLAGS],[
     AX_REQUIRE_DEFINED([AX_CHECK_COMPILE_FLAG])
 
     # Variable names
-    m4_define(ax_warn_cxxflags_variable,
+    m4_define([ax_warn_cxxflags_variable],
               [m4_normalize(ifelse([$1],,[WARN_CXXFLAGS],[$1]))])
 
     AC_LANG_PUSH([C++])

m4/ax_compiler_flags_gir.m4

@@ -26,13 +26,13 @@
 #   and this notice are preserved.  This file is offered as-is, without any
 #   warranty.
 
-#serial 4
+#serial 5
 
 AC_DEFUN([AX_COMPILER_FLAGS_GIR],[
     AX_REQUIRE_DEFINED([AX_APPEND_FLAG])
 
     # Variable names
-    m4_define(ax_warn_scannerflags_variable,
+    m4_define([ax_warn_scannerflags_variable],
               [m4_normalize(ifelse([$1],,[WARN_SCANNERFLAGS],[$1]))])
 
     # Base flags

m4/ax_compiler_flags_ldflags.m4

@@ -25,15 +25,16 @@
 #   and this notice are preserved.  This file is offered as-is, without any
 #   warranty.
 
-#serial 5
+#serial 7
 
 AC_DEFUN([AX_COMPILER_FLAGS_LDFLAGS],[
     AX_REQUIRE_DEFINED([AX_APPEND_LINK_FLAGS])
     AX_REQUIRE_DEFINED([AX_APPEND_FLAG])
     AX_REQUIRE_DEFINED([AX_CHECK_COMPILE_FLAG])
+    AX_REQUIRE_DEFINED([AX_CHECK_LINK_FLAG])
 
     # Variable names
-    m4_define(ax_warn_ldflags_variable,
+    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
@@ -47,9 +48,25 @@ AC_DEFUN([AX_COMPILER_FLAGS_LDFLAGS],[
         ax_compiler_flags_test=""
     ])
 
+    # macOS linker does not have --as-needed
+    AX_CHECK_LINK_FLAG([-Wl,--no-as-needed], [
+        ax_compiler_flags_as_needed_option="-Wl,--no-as-needed"
+    ], [
+        ax_compiler_flags_as_needed_option=""
+    ])
+
+    # macOS linker speaks with a different accent
+    ax_compiler_flags_fatal_warnings_option=""
+    AX_CHECK_LINK_FLAG([-Wl,--fatal-warnings], [
+        ax_compiler_flags_fatal_warnings_option="-Wl,--fatal-warnings"
+    ])
+    AX_CHECK_LINK_FLAG([-Wl,-fatal_warnings], [
+        ax_compiler_flags_fatal_warnings_option="-Wl,-fatal_warnings"
+    ])
+
     # Base flags
     AX_APPEND_LINK_FLAGS([ dnl
-        -Wl,--no-as-needed dnl
+        $ax_compiler_flags_as_needed_option dnl
         $3 dnl
     ],ax_warn_ldflags_variable,[$ax_compiler_flags_test])
 
@@ -66,7 +83,7 @@ AC_DEFUN([AX_COMPILER_FLAGS_LDFLAGS],[
         # suggest-attribute=format is disabled because it gives too many false
         # positives
         AX_APPEND_LINK_FLAGS([ dnl
-            -Wl,--fatal-warnings dnl
+            $ax_compiler_flags_fatal_warnings_option dnl
         ],ax_warn_ldflags_variable,[$ax_compiler_flags_test])
     ])
 

m4/ax_generate_changelog.m4

@@ -52,7 +52,7 @@
 #   and this notice are preserved.  This file is offered as-is, without any
 #   warranty.
 
-#serial 1
+#serial 2
 
 AC_DEFUN([AX_GENERATE_CHANGELOG],[
 	# Find git, defaulting to the 'missing' script so the user gets a nice
@@ -73,7 +73,7 @@ GENERATE_CHANGELOG_RULES='
 #  - CHANGELOG_GIT_DIR: .git directory to use. (Default: $(top_srcdir)/.git)
 
 # git-specific
-CHANGELOG_GIT_FLAGS ?= --stat -M -C --name-status --no-color
+CHANGELOG_GIT_FLAGS ?= --stat -M -C --name-status --no-color --no-decorate
 CHANGELOG_GIT_DIR ?= $(top_srcdir)/.git
 
 ifeq ($(CHANGELOG_START),)

m4/ax_is_release.m4

@@ -26,6 +26,10 @@
 #    * micro-version:  ax_is_release will be 'no' if the micro version number
 #                      in $PACKAGE_VERSION is odd; this assumes
 #                      $PACKAGE_VERSION follows the 'major.minor.micro' scheme
+#    * dash-version:   ax_is_release will be 'no' if there is a dash '-'
+#                      in $PACKAGE_VERSION, for example 1.2-pre3, 1.2.42-a8b9
+#                      or 2.0-dirty (in particular this is suitable for use
+#                      with git-version-gen)
 #    * always:         ax_is_release will always be 'yes'
 #    * never:          ax_is_release will always be 'no'
 #
@@ -34,12 +38,13 @@
 # LICENSE
 #
 #   Copyright (c) 2015 Philip Withnall <philip@tecnocode.co.uk>
+#   Copyright (c) 2016 Collabora Ltd.
 #
 #   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.
 
-#serial 4
+#serial 5
 
 AC_DEFUN([AX_IS_RELEASE],[
     AC_BEFORE([AC_INIT],[$0])
@@ -61,9 +66,15 @@ AC_DEFUN([AX_IS_RELEASE],[
         AS_IF([test "$(( $micro_version % 2 ))" -ne 0],
               [ax_is_release=no],[ax_is_release=yes])
       ],
+      [dash-version],[
+        # $is_release = ($PACKAGE_VERSION has a dash)
+        AS_CASE([$PACKAGE_VERSION],
+                [*-*], [ax_is_release=no],
+                [*], [ax_is_release=yes])
+      ],
       [always],[ax_is_release=yes],
       [never],[ax_is_release=no],
       [
-        AC_MSG_ERROR([Invalid policy. Valid policies: git-directory, minor-version.])
+        AC_MSG_ERROR([Invalid policy. Valid policies: git-directory, minor-version, micro-version, dash-version, always, never.])
       ])
 ])