[Buildroot] [PATCH v2 2/5] package/gdb: bump to version 8.1

[Thomas Petazzoni <thomas.petazzoni@bootlin.com>]

From: Romain Naour <romain.naour@gmail.com>

https://sourceware.org/ml/gdb-announce/2018/msg00001.html

gdb 8.1 has a new optional dependency on mpfr, which according to the
NEWS file:

   GDB now uses the GNU MPFR library, if available, to emulate target
   floating-point arithmetic during expression evaluation when the
   target uses different floating-point formats than the host.  At
   least version 3.1 of GNU MPFR is required.

So for the target gdb, this is unnecessary, and therefore we
forcefully disable mpfr support by passing --without-mpfr.

For the host gdb, it would potentially be useful, but since it's a new
feature that isn't essential, we for now keep it disabled as well. An
option may be added later if needed.

Signed-off-by: Romain Naour <romain.naour@gmail.com>
[Thomas: change mpfr handling.]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
---
 package/gdb/Config.in.host | 6 ++++++
 package/gdb/gdb.hash       | 1 +
 package/gdb/gdb.mk         | 4 +++-
 3 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/package/gdb/Config.in.host b/package/gdb/Config.in.host
index 8676c6f01b..ae9a7257dd 100644
--- a/package/gdb/Config.in.host
+++ b/package/gdb/Config.in.host
@@ -64,6 +64,11 @@ config BR2_GDB_VERSION_8_0
 	# Needs a C++11 compiler
 	depends on BR2_HOST_GCC_AT_LEAST_4_8
 
+config BR2_GDB_VERSION_8_1
+	bool "gdb 8.1.x"
+	# Needs a C++11 compiler
+	depends on BR2_HOST_GCC_AT_LEAST_4_8
+
 endchoice
 
 endif
@@ -76,4 +81,5 @@ config BR2_GDB_VERSION
 	default "7.11.1"   if BR2_GDB_VERSION_7_11 || !BR2_PACKAGE_HOST_GDB
 	default "7.12.1"   if BR2_GDB_VERSION_7_12
 	default "8.0.1"    if BR2_GDB_VERSION_8_0
+	default "8.1"      if BR2_GDB_VERSION_8_1
 	depends on BR2_PACKAGE_GDB || BR2_PACKAGE_HOST_GDB
diff --git a/package/gdb/gdb.hash b/package/gdb/gdb.hash
index 62edd93792..3af72db23d 100644
--- a/package/gdb/gdb.hash
+++ b/package/gdb/gdb.hash
@@ -3,6 +3,7 @@ sha512	17a5138277a31685a5c2a841cb47ed9bc4626ea617b8ca77750513b300299f4fbbffe5049
 sha512  f80ec6c8a0f0b54c8b945666e875809174402b7e121efb378ebac931a91f9a1cc0048568f8e2f42ae8ae2392ff8d144c2e51d41c7398935017450aaf29838360	gdb-7.11.1.tar.xz
 sha512  0ac8d0a495103611ef41167a08313a010dce6ca4c6d827cbe8558a0c1a1a8a6bfa53f1b7704251289cababbfaaf9e075550cdf741a54d6cd9ca3433d910efcd8	gdb-7.12.1.tar.xz
 sha512  5eb328910033f0918058be2f92caebf1e8dfc6caa3c730d99d621627e53de3c1b43761c2f683d53555893253c2f06768cbf56cdea051a3d291ffb6cfae87b5e1	gdb-8.0.1.tar.xz
+sha512  ffd82f415d7652d62dad1716c307836f594217a363429609beb7d70239e8bf06b73b393345b0e000796228e56681ed7656ac3c8be05e91d6d652ab0d5b1dc357	gdb-8.1.tar.xz
 
 # Locally calculated (fetched from Github)
 sha512  e57582766e7d510b26bea63606429e6289414c31c60e28fef24d3d82fa20fb5a1f92b3831fde53e4f7c178c9e099609d3292628cf921a99109e297af4e5f83d9 	gdb-arc-2017.09-release-gdb.tar.gz
diff --git a/package/gdb/gdb.mk b/package/gdb/gdb.mk
index 5ca464ad46..4aa1a42b0a 100644
--- a/package/gdb/gdb.mk
+++ b/package/gdb/gdb.mk
@@ -113,7 +113,8 @@ GDB_CONF_OPTS = \
 	--with-curses \
 	--without-included-gettext \
 	--disable-werror \
-	--enable-static
+	--enable-static \
+	--without-mpfr
 
 # When gdb is built as C++ application for ARC it segfaults at runtime
 # So we pass --disable-build-with-cxx config option to force gdb not to
@@ -200,6 +201,7 @@ HOST_GDB_CONF_OPTS = \
 	--disable-werror \
 	--without-included-gettext \
 	--with-curses \
+	--without-mpfr \
 	$(GDB_DISABLE_BINUTILS_CONF_OPTS)
 
 ifeq ($(BR2_PACKAGE_HOST_GDB_TUI),y)
-- 
2.14.3