Fix master builds on mips* again (#815)

* Use local folder for xgo

* Always do crosscompile and testing to fail early

* Added mips* values for boltdb

In order to get master building again I have applied these 2 additional
files to boltdb. This should get dropped when
https://github.com/boltdb/bolt/issues/656 gets solved.

.drone.yml

@@ -35,7 +35,7 @@ pipeline:
     commands:
       - make test-mysql
     when:
-      event: [ push ]
+      event: [ push, tag, pull_request ]
 
   test-pgsql:
     image: webhippie/golang:edge
@@ -47,7 +47,7 @@ pipeline:
     commands:
       - make test-pgsql
     when:
-      event: [ push ]
+      event: [ push, tag, pull_request ]
 
   updater:
     image: karalabe/xgo-latest:latest
@@ -59,8 +59,7 @@ pipeline:
     commands:
       - make release
     when:
-      event: [ push, tag ]
-      branch: [ master, release/*, refs/tags/* ]
+      event: [ push, tag, pull_request ]
 
   coverage:
     image: plugins/coverage
@@ -140,11 +139,11 @@ services:
       - MYSQL_DATABASE=test
       - MYSQL_ALLOW_EMPTY_PASSWORD=yes
     when:
-      event: [ push ]
+      event: [ push, tag, pull_request ]
 
   pgsql:
     image: postgres:9.5
     environment:
       - POSTGRES_DB=test
     when:
-      event: [ push ]
+      event: [ push, tag, pull_request ]

Makefile

@@ -108,7 +108,7 @@ release-build:
 	@which xgo > /dev/null; if [ $$? -ne 0 ]; then \
 		go get -u github.com/karalabe/xgo; \
 	fi
-	xgo -dest $(DIST)/binaries -tags '$(TAGS)' -ldflags '-s -w $(LDFLAGS)' -targets '$(TARGETS)' -out $(EXECUTABLE)-$(VERSION) $(IMPORT)
+	xgo -dest $(DIST)/binaries -tags '$(TAGS)' -ldflags '-s -w $(LDFLAGS)' -targets '$(TARGETS)' -out $(EXECUTABLE)-$(VERSION) .
 ifeq ($(CI),drone)
 	mv /build/* $(DIST)/binaries
 endif

vendor/github.com/boltdb/bolt/bolt_mips64.go

@@ -0,0 +1,8 @@
+// +build mips64
+package bolt
+
+// maxMapSize represents the largest mmap size supported by Bolt.
+const maxMapSize = 0xFFFFFFFFFFFF // 256TB
+
+// maxAllocSize is the size used when creating array pointers.
+const maxAllocSize = 0x7FFFFFFF

vendor/github.com/boltdb/bolt/bolt_mips64le.go

@@ -0,0 +1,8 @@
+// +build mips64le
+package bolt
+
+// maxMapSize represents the largest mmap size supported by Bolt.
+const maxMapSize = 0xFFFFFFFFFFFF // 256TB
+
+// maxAllocSize is the size used when creating array pointers.
+const maxAllocSize = 0x7FFFFFFF