Add --enable-compressed-debug-sections={all,gas,gold,ld}

This patch removes the gas configure option:

--enable-compressed-debug-sections

and adds a toplevel configure option:

--enable-compressed-debug-sections={all,gas,gold,ld}

to enable compressed debug sections for gas, gold or ld by default.  At
the moment, this configure option is ignored by gold and ld.  For x86
Linux targets, default to compressing debug sections in gas.

	PR gas/19109
	* configure.ac: Add
	--enable-compressed-debug-sections={all,gas,gold,ld}.
	* configure: Regenerated.

gas/

	PR gas/19109
	* NEWS: Update --enable-compressed-debug-sections=.
	* configure.ac: Remove --enable-compressed-debug-sections.
	(DEFAULT_FLAG_COMPRESS_DEBUG): Check
	--enable-compressed-debug-sections={all,gas} instead of
	--enable-compressed-debug-sections.  For x86 Linux targets,
	default to compressing debug sections.
	* configure: Regenerated.

4 files changed, 29 insertions, 36 deletions

diff --git a/gas/ChangeLog b/gas/ChangeLog
index 2662b43..e6f9c1f 100644
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,3 +1,14 @@
+2015-10-20  H.J. Lu  <hongjiu.lu@intel.com>
+
+	PR gas/19109
+	* NEWS: Update --enable-compressed-debug-sections=.
+	* configure.ac: Remove --enable-compressed-debug-sections.
+	(DEFAULT_FLAG_COMPRESS_DEBUG): Check
+	--enable-compressed-debug-sections={all,gas} instead of
+	--enable-compressed-debug-sections.  For x86 Linux targets,
+	default to compressing debug sections.
+	* configure: Regenerated.
+
 2015-10-19  Nick Clifton  <nickc@redhat.com>
 
 	PR gas/19109
diff --git a/gas/NEWS b/gas/NEWS
index 50b921d..0ea699b 100644
--- a/gas/NEWS
+++ b/gas/NEWS
@@ -1,7 +1,7 @@
 -*- text -*-
 
-* Add a configure option --enable-compressed-debug-sections=[yes|no] to decide
-  whether DWARF debug sections should be compressed by default.
+* Add a configure option --enable-compressed-debug-sections={all,gas} to
+  decide whether DWARF debug sections should be compressed by default.
 
 * Add support for the ARC EM/HS, and ARC600/700 architectures.  Remove
   assembler support for Argonaut RISC architectures.
diff --git a/gas/configure b/gas/configure
index 83bc95c..397bb38 100755
--- a/gas/configure
+++ b/gas/configure
@@ -764,7 +764,6 @@ enable_plugins
 enable_largefile
 enable_targets
 enable_checking
-enable_compressed_debug_sections
 enable_werror
 enable_build_warnings
 enable_nls
@@ -1413,7 +1412,6 @@ Optional Features:
   --disable-largefile     omit support for large files
   --enable-targets        alternative target configurations besides the primary
   --enable-checking       enable run-time checks
-  --enable-compressed-debug-sections  compress debug sections by default
   --enable-werror         treat compile warnings as errors
   --enable-build-warnings enable build-time compiler warnings
   --disable-nls           do not use Native Language Support
@@ -10971,7 +10969,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 10974 "configure"
+#line 10972 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -11077,7 +11075,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 11080 "configure"
+#line 11078 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -11666,19 +11664,6 @@ $as_echo "#define ENABLE_CHECKING 1" >>confdefs.h
 
 fi
 
-# PR gas/19109
-# Decide the default method for compressing debug sections.
-ac_default_compressed_debug_sections=unset
-# Provide a configure time option to override our default.
-# Check whether --enable-compressed_debug_sections was given.
-if test "${enable_compressed_debug_sections+set}" = set; then :
-  enableval=$enable_compressed_debug_sections; case "${enableval}" in
-  yes) ac_default_compressed_debug_sections=yes ;;
-  no)  ac_default_compressed_debug_sections=no ;;
-  *)   ac_default_compressed_debug_sections=unset ;;
-esac
-fi
-
 using_cgen=no
 
 
@@ -12504,11 +12489,15 @@ _ACEOF
 
 done
 
-if test x$ac_default_compressed_debug_sections == xyes ; then
+# For x86 Linux targets, default to compressing debug sections unless
+# configured otherwise.
+case x${enable_compressed_debug_sections}-${target_cpu_type}-${target_os} in
+x*gas*|xall*|x-i386-linux-gnu)
 
 $as_echo "#define DEFAULT_FLAG_COMPRESS_DEBUG 1" >>confdefs.h
 
-fi
+  ;;
+esac
 
 # Turn on all targets if possible
 if test ${all_targets} = "yes"; then
diff --git a/gas/configure.ac b/gas/configure.ac
index 278b45d..b15da9a 100644
--- a/gas/configure.ac
+++ b/gas/configure.ac
@@ -64,18 +64,6 @@ if test x$ac_checking != x ; then
   AC_DEFINE(ENABLE_CHECKING, 1, [Define if you want run-time sanity checks.])
 fi
 
-# PR gas/19109
-# Decide the default method for compressing debug sections.
-ac_default_compressed_debug_sections=unset
-# Provide a configure time option to override our default.
-AC_ARG_ENABLE(compressed_debug_sections,
-[  --enable-compressed-debug-sections  compress debug sections by default],
-[case "${enableval}" in
-  yes) ac_default_compressed_debug_sections=yes ;;
-  no)  ac_default_compressed_debug_sections=no ;;
-  *)   ac_default_compressed_debug_sections=unset ;;
-esac])dnl
-
 using_cgen=no
 
 AM_BINUTILS_WARNINGS
@@ -548,9 +536,14 @@ changequote([,])dnl
 
 done
 
-if test x$ac_default_compressed_debug_sections == xyes ; then
-  AC_DEFINE(DEFAULT_FLAG_COMPRESS_DEBUG, 1, [Define if you want compressed debug sections by default.])
-fi
+# For x86 Linux targets, default to compressing debug sections unless
+# configured otherwise.
+case x${enable_compressed_debug_sections}-${target_cpu_type}-${target_os} in
+x*gas*|xall*|x-i386-linux-gnu)
+  AC_DEFINE(DEFAULT_FLAG_COMPRESS_DEBUG, 1,
+	    [Define if you want compressed debug sections by default.])
+  ;;
+esac
 
 # Turn on all targets if possible
 if test ${all_targets} = "yes"; then