Allow selecting 'latest' snapshot, as well as 'specific' date snapshot for glibc.

Update uClibc config to commonalise some help.

 /trunk/scripts/build/libc_glibc.sh |   22    20     2     0 ++++++++++++++++++++--
 /trunk/config/libc/glibc.in        |   12    12     0     0 ++++++++++++
 /trunk/config/libc/uClibc.in       |   12     4     8     0 ++++--------
 /trunk/config/libc.in              |   13    13     0     0 +++++++++++++
 4 files changed, 49 insertions(+), 10 deletions(-)

config/libc.in

@@ -44,4 +44,17 @@ if LIBC_UCLIBC
 source config/libc/uClibc.in
 endif
 
+config LIBC_VERSION
+    help
+      Enter the date of the snapshot you want to use in the form: YYYYMMDD
+      where YYYY is the 4-digit year, MM the 2-digit month and DD the 2-digit
+      day in the month.
+      
+      Please note:
+      - glibc has snapshots done every monday, and only the last ten are kept.
+      - uClibc has daily snapshots, and only the last 30-or-so are kept.
+      
+      So if you want to be able to re-build your toolchain later, you will
+      have to sacve your C library tarball by yourself.
+
 endmenu

config/libc/glibc.in

@@ -4,6 +4,16 @@ choice
     bool
     prompt "glibc version"
 
+config LIBC_V_LATEST
+    bool
+    prompt "'latest' snapshot (EXPERIMENTAL)"
+    depends on EXPERIMENTAL
+
+config LIBC_V_date
+    bool
+    prompt "<specific date> (EXPERIMENTAL)"
+    depends on EXPERIMENTAL
+
 config LIBC_V_2_3_6
     bool
     prompt "2.3.6 (OBSOLETE)"
@@ -36,6 +46,8 @@ endchoice
 
 config LIBC_VERSION
     string
+    prompt "Enter date (YYYYMMDD)" if LIBC_V_date
+    default "latest" if LIBC_V_LATEST
     default "2.3.6" if LIBC_V_2_3_6
     default "2.4" if LIBC_V_2_4
     default "2.5" if LIBC_V_2_5

config/libc/uClibc.in

@@ -6,11 +6,13 @@ choice
 
 config LIBC_V_snapshot
     bool
-    prompt "latest snapshot"
+    prompt "latest snapshot (EXPERIMENTAL)"
+    depends on EXPERIMENTAL
 
 config LIBC_V_specific_date
     bool
-    prompt "<specific date>"
+    prompt "<specific date> (EXPERIMENTAL)"
+    depends on EXPERIMENTAL
 
 config LIBC_V_0_9_28
     bool
@@ -50,12 +52,6 @@ config LIBC_VERSION
     default "0.9.29" if LIBC_V_0_9_29
 # CT_INSERT_VERSION_STRING_ABOVE
 # Don't remove above line!
-    help
-      Enter the date of the snapshot you want to use in the form: YYYYMMDD
-      where YYYY is the 4-digit year, MM the 2-digit month and DD the 2-digit
-      day in the month.
-      
-      Please note that uClibc site removes snapshots older than a month.
 
 choice
     bool

scripts/build/libc_glibc.sh

@@ -17,13 +17,19 @@ do_libc_get() {
     # Ah! Not all GNU folks seem stupid. All glibc releases are in the same
     # directory. Good. Alas, there is no snapshot there. I'll deal with them
     # later on... :-/
-    CT_GetFile "${CT_LIBC_FILE}" {ftp,http}://ftp.gnu.org/gnu/glibc
+    CT_GetFile "${CT_LIBC_FILE}"                        \
+               {ftp,http}://ftp.gnu.org/gnu/glibc       \
+               ftp://gcc.gnu.org/pub/glibc/releases     \
+               ftp://gcc.gnu.org/pub/glibc/snapshots
 
     # C library addons
     for addon in $(do_libc_add_ons_list " "); do
         # NPTL addon is not to be downloaded, in any case
         [ "${addon}" = "nptl" ] && continue || true
-        CT_GetFile "${CT_LIBC}-${addon}-${CT_LIBC_VERSION}" {ftp,http}://ftp.gnu.org/gnu/glibc
+        CT_GetFile "${CT_LIBC}-${addon}-${CT_LIBC_VERSION}" \
+                   {ftp,http}://ftp.gnu.org/gnu/glibc       \
+                   ftp://gcc.gnu.org/pub/glibc/releases     \
+                   ftp://gcc.gnu.org/pub/glibc/snapshots
     done
 
     return 0
@@ -219,6 +225,12 @@ do_libc_start_files() {
     # Add some default CC args
     glibc_version_major=$(echo ${CT_LIBC_VERSION} |sed -r -e 's/^([^\.]+)\..*/\1/')
     glibc_version_minor=$(echo ${CT_LIBC_VERSION} |sed -r -e 's/^[^\.]+\.([^.]+).*/\1/')
+    # In case we're using a snapshot, fake a >=2.6 version.
+    if [    "${CT_LIBC_V_LATEST}" = "y" \
+         -o "${CT_LIBC_V_date}" = "y"   ]; then
+        glibc_version_major=3
+        glibc_version_minor=0
+    fi
     if [    ${glibc_version_major} -eq 2 -a ${glibc_version_minor} -ge 6    \
          -o ${glibc_version_major} -gt 2                                    ]; then
         # Don't use -pipe: configure chokes on it for glibc >= 2.6.
@@ -324,6 +336,12 @@ do_libc() {
     # Add some default CC args
     glibc_version_major=$(echo ${CT_LIBC_VERSION} |sed -r -e 's/^([^\.]+)\..*/\1/')
     glibc_version_minor=$(echo ${CT_LIBC_VERSION} |sed -r -e 's/^[^\.]+\.([^.]+).*/\1/')
+    # In case we're using a snapshot, fake a >=2.6 version.
+    if [    "${CT_LIBC_V_LATEST}" = "y" \
+         -o "${CT_LIBC_V_date}" = "y"   ]; then
+        glibc_version_major=3
+        glibc_version_minor=0
+    fi
     if [    ${glibc_version_major} -eq 2 -a ${glibc_version_minor} -ge 6    \
          -o ${glibc_version_major} -gt 2                                    ]; then
         # Don't use -pipe: configure chokes on it for glibc >= 2.6.