GMP and MPFR are no longer a sub-component of gcc (config-wise).

Build and install GMP and MPFR for the target.
Use the target GMP and MPFR to build the native gdb.
Have separate extra_config for cross gdb, native gdb and gdbserver.
Check native GMP and MPFR in //.

 /trunk/scripts/build/debug/300-gdb.sh |   27    19     8     0 ++++++++++++++++-------
 /trunk/scripts/build/gmp.sh           |   47    39     8     0 ++++++++++++++++++++++++++++++++-------
 /trunk/scripts/build/mpfr.sh          |   49    40     9     0 +++++++++++++++++++++++++++++++++--------
 /trunk/steps.mk                       |    2     2     0     0 ++
 /trunk/config/cc/gcc.in               |   18     1    17     0 +--------------
 /trunk/config/debug/gdb.in            |    6     1     5     0 +----
 /trunk/config/config.in               |    1     1     0     0 +
 /trunk/config/gmp_mpfr.in             |   34    34     0     0 ++++++++++++++++++++++++++++
 8 files changed, 137 insertions(+), 47 deletions(-)

4 files changed, 37 insertions, 22 deletions

diff --git a/config/cc/gcc.in b/config/cc/gcc.in
index 33eee4e2..07cdc400 100644
--- a/config/cc/gcc.in
+++ b/config/cc/gcc.in
@@ -120,7 +120,7 @@ config CC_VERSION
 config CC_GCC_4_3_or_later
     bool
     default n
-    select CC_GCC_GMP_MPFR
+    select GMP_MPFR
 
 config CC_CXA_ATEXIT
     bool
@@ -166,19 +166,3 @@ config CC_BUGURL
     default ""
     help
       Specify the URL that users should visit if they wish to report a bug.
-
-menuconfig CC_GCC_GMP_MPFR
-    bool
-    prompt "GMP and MPFR"
-    help
-      Recent gcc needs both GMP and MPFR to build some frontends.
-
-      Say 'Y' here if you want to build those two libraries specifically
-      for crosstool-NG.
-
-      Saying 'Y' is highly recommended if building gcc-4.3 or higher.
-
-if CC_GCC_GMP_MPFR
-source config/cc/gmp.in
-source config/cc/mpfr.in
-endif
diff --git a/config/config.in b/config/config.in
index e7c236c7..cd73a3e6 100644
--- a/config/config.in
+++ b/config/config.in
@@ -2,6 +2,7 @@ source config/global.in
 source config/target.in
 source config/toolchain.in
 source config/kernel.in
+source config/gmp_mpfr.in
 source config/binutils.in
 source config/cc.in
 source config/libc.in
diff --git a/config/debug/gdb.in b/config/debug/gdb.in
index 643162b6..d2ce15eb 100644
--- a/config/debug/gdb.in
+++ b/config/debug/gdb.in
@@ -33,6 +33,7 @@ config GDB_NATIVE
     bool
     prompt "Native gdb"
     default n
+    select GMP_MPFR_TARGET if GMP_MPFR
     help
       Build and install a native gdb for the target, to run on the target.
 
@@ -123,10 +124,6 @@ choice
     bool
     prompt "ncurses version"
 
-config NCURSES_V_4_2
-    bool
-    prompt "4.2"
-
 config NCURSES_V_5_6
     bool
     prompt "5.6"
@@ -135,7 +132,6 @@ endchoice
 
 config NCURSES_VERSION
     string
-    default "4.2" if NCURSES_V_4_2
     default "5.6" if NCURSES_V_5_6
 
 endif # GDB_NATIVE --> ncurses
diff --git a/config/gmp_mpfr.in b/config/gmp_mpfr.in
new file mode 100644
index 00000000..3ae6a91b
--- /dev/null
+++ b/config/gmp_mpfr.in
@@ -0,0 +1,34 @@
+# GMP and MPFR libraries config options
+
+menu "GMP and MPFR"
+
+config GMP_MPFR
+    bool
+    prompt "GMP and MPFR"
+    help
+      Recent gcc needs both GMP and MPFR to build some frontends.
+
+      Say 'Y' here if you want to build those two libraries specifically
+      for crosstool-NG.
+
+      The packages that can use GMP and MPFR are:
+        - binutils
+        - gcc
+        - gdb
+
+config GMP_MPFR_TARGET
+    bool
+    prompt "Build libraries for the target"
+    depends on GMP_MPFR
+    default n
+    help
+      Also build libraries for the target. This can be usefull if you want
+      to later build a compiler that will run on the target, or if you want
+      to run gdb natively on the target.
+
+if GMP_MPFR
+source config/cc/gmp.in
+source config/cc/mpfr.in
+endif
+
+endmenu