2010-11-22 Basile Starynkevitch <basile@starynkevitch.net>

	MELT branch merged with trunk rev 167021

2010-11-22  Basile Starynkevitch  <basile@starynkevitch.net>
	* melt-runtime.c: replaced strerror by xstrerror everywhere, while
	merging with trunk 167021.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/melt-branch@167023 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 35 insertions, 0 deletions

diff --git a/gcc/flag-types.h b/gcc/flag-types.h
index 4259985b02a..6eb6c3f422f 100644
--- a/gcc/flag-types.h
+++ b/gcc/flag-types.h
@@ -58,6 +58,41 @@ enum debug_info_usage
   DINFO_USAGE_NUM_ENUMS	/* The number of enumerators. */
 };
 
+/* A major contribution to object and executable size is debug
+   information size.  A major contribution to debug information size
+   is struct descriptions replicated in several object files. The
+   following flags attempt to reduce this information.  The basic
+   idea is to not emit struct debugging information in the current
+   compilation unit when that information will be generated by
+   another compilation unit.
+
+   Debug information for a struct defined in the current source
+   file should be generated in the object file.  Likewise the
+   debug information for a struct defined in a header should be
+   generated in the object file of the corresponding source file.
+   Both of these case are handled when the base name of the file of
+   the struct definition matches the base name of the source file
+   of the current compilation unit.  This matching emits minimal
+   struct debugging information.
+
+   The base file name matching rule above will fail to emit debug
+   information for structs defined in system headers.  So a second
+   category of files includes system headers in addition to files
+   with matching bases.
+
+   The remaining types of files are library headers and application
+   headers.  We cannot currently distinguish these two types.  */
+
+enum debug_struct_file
+{
+  DINFO_STRUCT_FILE_NONE,   /* Debug no structs. */
+  DINFO_STRUCT_FILE_BASE,   /* Debug structs defined in files with the
+                               same base name as the compilation unit. */
+  DINFO_STRUCT_FILE_SYS,    /* Also debug structs defined in system
+                               header files.  */
+  DINFO_STRUCT_FILE_ANY     /* Debug structs defined in all files. */
+};
+
 /* Enumerate visibility settings.  This is deliberately ordered from most
    to least visibility.  */
 #ifndef SYMBOL_VISIBILITY_DEFINED