pseudo: fix link with new sqlite3

If sqlite3 is built with FTS5 it uses log() from libm, but that linkage is lost
if we manually statically link so explicitly link to libm.

(From OE-Core rev: b24a67217d82f225e76fbc2dfb70dd8e1a6ea215)

Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-devtools/pseudo/files/libm.patch

@@ -0,0 +1,33 @@
+If sqlite3 is built with FTS5 enabled then it links to libm.so for log(), but if
+we statically link to libsqlite3.a then this linkage is lost.
+
+Work around this by always linking to libm.so.
+
+Upstream-Status: Submitted
+Signed-off-by: Ross Burton <ross.burton@intel.com>
+
+From 4633a8750f0966621d258548fba82bc6aa5aa997 Mon Sep 17 00:00:00 2001
+From: Ross Burton <ross.burton@intel.com>
+Date: Tue, 6 Nov 2018 12:13:17 +0000
+Subject: [PATCH] Makefile: sqlite can need libm
+
+---
+ Makefile.in | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/Makefile.in b/Makefile.in
+index ad6541b..28b5ecb 100644
+--- a/Makefile.in
++++ b/Makefile.in
+@@ -73,7 +73,7 @@ WRAPOBJS=pseudo_wrappers.o
+ 
+ # needed for anything that links with pseduo_client.o, pretty much
+ CLIENT_LDFLAGS=-ldl -lpthread
+-DB_LDFLAGS=@SQLITE_LDARG@ -lpthread
++DB_LDFLAGS=@SQLITE_LDARG@ -lpthread -lm
+ 
+ PSEUDO=$(BIN)/pseudo
+ PSEUDODB=$(BIN)/pseudodb
+-- 
+2.11.0
+

meta/recipes-devtools/pseudo/pseudo_git.bb

@@ -2,6 +2,7 @@ require pseudo.inc
 
 SRC_URI = "git://git.yoctoproject.org/pseudo \
            file://0001-configure-Prune-PIE-flags.patch \
+           file://libm.patch \
            file://fallback-passwd \
            file://fallback-group \
            file://moreretries.patch \