Disable ReLAPACK by default (#1238)

* Disable ReLAPACK by default; mention it in final build message if included

* Add files via upload

* Add files via upload

* Add files via upload

Makefile

@@ -17,7 +17,7 @@ SUBDIRS	+= lapack
 endif
 
 RELA =
-ifneq ($(BUILD_RELAPACK), 0)
+ifeq ($(BUILD_RELAPACK), 1)
 RELA = re_lapack
 endif
 

Makefile.rule

@@ -84,7 +84,7 @@ VERSION = 0.2.20.dev
 BUILD_LAPACK_DEPRECATED = 1
 
 # Build RecursiveLAPACK on top of LAPACK
-BUILD_RELAPACK = 1
+# BUILD_RELAPACK = 1
 
 # If you want to use legacy threaded Level 3 implementation.
 # USE_SIMPLE_THREADED_LEVEL3 = 1

Makefile.system

@@ -1129,6 +1129,9 @@ LIB_COMPONENTS += LAPACK
 ifneq ($(NO_LAPACKE), 1)
 LIB_COMPONENTS += LAPACKE
 endif
+ifeq ($(BUILD_RELAPACK), 1)
+LIB_COMPONENTS += ReLAPACK
+endif
 endif
 
 ifeq ($(ONLY_CBLAS), 1)