libc/newlib: allow using CVS snapshots

The newlib "team" rolls new releases about once a year (december).
This is quite a long time between releases, in case code was fixed.
So, allow user to use a CVS snapshot to benefit early from fixes
and enhancements to newlib.

config/libc/newlib.in

@@ -20,13 +20,34 @@ config LIBC_NEWLIB_V_1_17_0
     bool
     prompt "1.17.0"
 
+config LIBC_NEWLIB_CVS
+    bool
+    prompt "Use CVS snapshot"
+    help
+      The newlib "team" rolls new releases about once a year (december).
+      This is quite a long time between releases, in case code was fixed.
+      
+      Saying 'Y' here will allow you to use the bleeding-edge code from
+      the CVS repository. This may or may not fix your issues, may or may
+      not build, may or may not crash your machine, may or may not withdraw
+      money from your bank account, may or may not date your girlfriend,
+      may or may not resurect Elvis... :-)
+      
+      In a word: use the CVS snapshot at your own risk! 
+
 endchoice
 
 config LIBC_VERSION
     string
+    prompt "use CVS tag" if LIBC_NEWLIB_CVS
 # Don't remove next line
 # CT_INSERT_VERSION_STRING_BELOW
     default "1.17.0" if LIBC_NEWLIB_V_1_17_0
+    help
+      Enter the tag you want to use.
+      Leave empty to use the 'head' of the repository.
+
+comment "Architecture specific options"
 
 config ATMEL_AVR32_HEADERS
     bool

scripts/build/libc/newlib.sh

@@ -5,12 +5,27 @@
 # Edited by Martin Lund <mgl@doredevelopment.dk>
 #
 
+libc_newlib_basename() {
+    if [ -z "${CT_LIBC_NEWLIB_CVS}" ]; then
+        echo "newlib-${CT_LIBC_VERSION}"
+    else
+        echo "newlib-cvs${CT_LIBC_VERSION:+-${CT_LIBC_VERSION}}"
+    fi
+}
 
 do_libc_get() {
     libc_src="ftp://sources.redhat.com/pub/newlib"
     avr32headers_src="http://dev.doredevelopment.dk/avr32-toolchain/sources"
 
+    if [ -z "${CT_LIBC_NEWLIB_CVS}" ]; then
         CT_GetFile "newlib-${CT_LIBC_VERSION}" ${libc_src}
+    else
+        CT_GetCVS "$(libc_newlib_basename)"                         \
+                  ":pserver:anoncvs@sources.redhat.com:/cvs/src"    \
+                  "newlib"                                          \
+                  "${CT_LIBC_VERSION}"                              \
+                  "$(libc_newlib_basename)=src"
+    fi
 
     if [ "${CT_ATMEL_AVR32_HEADERS}" = "y" ]; then
         CT_GetFile "avr32headers" ${avr32headers_src}
@@ -18,8 +33,8 @@ do_libc_get() {
 }
 
 do_libc_extract() {
-    CT_Extract "newlib-${CT_LIBC_VERSION}"
+    CT_Extract "$(libc_newlib_basename)"
-    CT_Patch "newlib-${CT_LIBC_VERSION}"
+    CT_Patch "$(libc_newlib_basename)"
 
     if [ "${CT_ATMEL_AVR32_HEADERS}" = "y" ]; then
         CT_Extract "avr32headers"
@@ -56,7 +71,7 @@ do_libc() {
     AR=${CT_TARGET}-ar                                  \
     RANLIB=${CT_TARGET}-ranlib                          \
     CT_DoExecLog ALL                                    \
-    "${CT_SRC_DIR}/newlib-${CT_LIBC_VERSION}/configure"     \
+    "${CT_SRC_DIR}/$(libc_newlib_basename)/configure"   \
         --host=${CT_BUILD}                              \
         --target=${CT_TARGET}                           \
         --prefix=${CT_PREFIX_DIR}

scripts/functions

@@ -503,8 +503,8 @@ CT_GetCVS() {
     if [ -n "${dirname}" ]; then
         case "${dirname}" in
             *=*)
-                CT_DoExecLog DEBUG mv "${dirname%%=*}" "${dirname#*=}"
+                CT_DoExecLog DEBUG mv "${dirname#*=}" "${dirname%%=*}"
-                CT_DoExecLog ALL tar cjf "${CT_TARBALLS_DIR}/${basename}.tar.bz2" "${dirname#*=}"
+                CT_DoExecLog ALL tar cjf "${CT_TARBALLS_DIR}/${basename}.tar.bz2" "${dirname%%=*}"
                 ;;
             *)
                 CT_DoExecLog ALL mv "${module}" "${dirname}"