Initial releaseHEADsubmit/master/20120920.1509352.0_alphamaster2.0alpha

Change-Id: I0736f126be88ae94efb6698b91de356c16357e52

1 files changed, 145 insertions, 0 deletions

diff --git a/common/m4/gst-error.m4 b/common/m4/gst-error.m4
new file mode 100755
index 0000000..f97f9a6
--- /dev/null
+++ b/common/m4/gst-error.m4
@@ -0,0 +1,145 @@
+Dnl handle various error-related things
+
+dnl Thomas Vander Stichele <thomas@apestaart.org>
+dnl Tim-Philipp Müller <tim centricular net>
+
+dnl Last modification: 2008-02-18
+
+dnl AG_GST_SET_ERROR_CFLAGS([ADD-WERROR])
+dnl AG_GST_SET_ERROR_CXXFLAGS([ADD-WERROR])
+dnl AG_GST_SET_LEVEL_DEFAULT([IS-CVS-VERSION])
+
+
+dnl Sets ERROR_CFLAGS to something the compiler will accept.
+dnl AC_SUBST them so they are available in Makefile
+
+dnl -Wall is added if it is supported
+dnl -Werror is added if ADD-WERROR is not "no"
+
+dnl These flags can be overridden at make time:
+dnl make ERROR_CFLAGS=
+AC_DEFUN([AG_GST_SET_ERROR_CFLAGS],
+[
+  AC_REQUIRE([AC_PROG_CC])
+  AC_REQUIRE([AS_COMPILER_FLAG])
+
+  
+  dnl if we support -Wall, set it unconditionally
+  AS_COMPILER_FLAG(-Wall,
+                   ERROR_CFLAGS="-Wall",
+                   ERROR_CFLAGS="")
+  
+  dnl if asked for, add -Werror if supported
+  if test "x$1" != "xno"
+  then
+    AS_COMPILER_FLAG(-Werror, ERROR_CFLAGS="$ERROR_CFLAGS -Werror")
+
+    dnl if -Werror isn't suported, try -errwarn=%all (Sun Forte case)
+    if test "x$ERROR_CFLAGS" == "x"
+    then
+      AS_COMPILER_FLAG([-errwarn=%all], [
+          ERROR_CFLAGS="-errwarn=%all"
+          dnl try -errwarn=%all,no%E_EMPTY_DECLARATION,
+          dnl no%E_STATEMENT_NOT_REACHED,no%E_ARGUEMENT_MISMATCH,
+          dnl no%E_MACRO_REDEFINED (Sun Forte case)
+          dnl For Forte we need disable "empty declaration" warning produced by un-needed semicolon 
+          dnl "statement not reached" disabled because there is g_assert_not_reached () in some places
+          dnl "macro redefined" because of gst/gettext.h
+          dnl FIXME: is it really supposed to be 'ARGUEMENT' and not 'ARGUMENT'?
+          for f in 'no%E_EMPTY_DECLARATION' \
+                   'no%E_STATEMENT_NOT_REACHED' \
+                   'no%E_ARGUEMENT_MISMATCH' \
+                   'no%E_MACRO_REDEFINED'
+          do
+            AS_COMPILER_FLAG([-errwarn=%all,$f], [
+              ERROR_CFLAGS="$ERROR_CFLAGS,$f"
+            ])
+          done
+      ])
+    fi
+  fi
+
+  AC_SUBST(ERROR_CFLAGS)
+  AC_MSG_NOTICE([set ERROR_CFLAGS to $ERROR_CFLAGS])
+])
+
+dnl Sets ERROR_CXXFLAGS to something the compiler will accept.
+dnl AC_SUBST them so they are available in Makefile
+
+dnl -Wall is added if it is supported
+dnl -Werror is added if ADD-WERROR is not "no"
+
+dnl These flags can be overridden at make time:
+dnl make ERROR_CXXFLAGS=
+AC_DEFUN([AG_GST_SET_ERROR_CXXFLAGS],
+[
+  AC_REQUIRE([AC_PROG_CXX])
+  AC_REQUIRE([AS_CXX_COMPILER_FLAG])
+
+  
+  dnl if we support -Wall, set it unconditionally
+  AS_CXX_COMPILER_FLAG(-Wall, [
+      ERROR_CXXFLAGS="-Wall"
+  ], [
+      ERROR_CXXFLAGS=""
+  ])
+  
+  dnl if asked for, add -Werror if supported
+  if test "x$1" != "xno"
+  then
+    AS_CXX_COMPILER_FLAG(-Werror, werror_supported=yes, werror_supported=no)
+
+    if test "x$werror_supported" = "xyes"; then
+        ERROR_CXXFLAGS="$ERROR_CXXFLAGS -Werror"
+
+        dnl add exceptions
+        for f in '-Wno-non-virtual-dtor'
+        do
+          AS_CXX_COMPILER_FLAG([$f], ERROR_CXXFLAGS="$ERROR_CXXFLAGS $f")
+        done
+    else
+      dnl if -Werror isn't suported, try -errwarn=%all
+      AS_CXX_COMPILER_FLAG([-errwarn=%all], errwarnall=yes, errwarnall=no)
+      if test "x$errwarnall" = "xyes"; then
+        ERROR_CXXFLAGS="-errwarn=%all"
+        dnl try -errwarn=%all,no%E_EMPTY_DECLARATION,
+        dnl no%E_STATEMENT_NOT_REACHED,no%E_ARGUEMENT_MISMATCH,
+        dnl no%E_MACRO_REDEFINED (Sun Forte case)
+        dnl For Forte we need disable "empty declaration" warning produced by un-needed semicolon 
+        dnl "statement not reached" disabled because there is g_assert_not_reached () in some places
+        dnl "macro redefined" because of gst/gettext.h
+        dnl FIXME: is it really supposed to be 'ARGUEMENT' and not 'ARGUMENT'?
+        dnl FIXME: do any of these work with the c++ compiler? if not, why
+        dnl do we check at all?
+        for f in 'no%E_EMPTY_DECLARATION' \
+                 'no%E_STATEMENT_NOT_REACHED' \
+                 'no%E_ARGUEMENT_MISMATCH' \
+                 'no%E_MACRO_REDEFINED'
+        do
+          AS_CXX_COMPILER_FLAG([-errwarn=%all,$f], [
+            ERROR_CXXFLAGS="$ERROR_CXXFLAGS,$f"
+          ])
+        done
+      fi
+    fi
+  fi
+
+  AC_SUBST(ERROR_CXXFLAGS)
+  AC_MSG_NOTICE([set ERROR_CXXFLAGS to $ERROR_CXXFLAGS])
+])
+
+dnl Sets the default error level for debugging messages
+AC_DEFUN([AG_GST_SET_LEVEL_DEFAULT],
+[
+  dnl define correct errorlevel for debugging messages. We want to have
+  dnl GST_ERROR messages printed when running cvs builds
+  if test "x[$1]" = "xyes"; then
+    GST_LEVEL_DEFAULT=GST_LEVEL_ERROR
+  else
+    GST_LEVEL_DEFAULT=GST_LEVEL_NONE
+  fi
+  AC_DEFINE_UNQUOTED(GST_LEVEL_DEFAULT, $GST_LEVEL_DEFAULT,
+    [Default errorlevel to use])
+  dnl AC_SUBST so we can use it for win32/common/config.h
+  AC_SUBST(GST_LEVEL_DEFAULT)
+])