Use fewer processes while building OpenBLAS

Closes #15716

deps/Makefile

@@ -1149,7 +1149,7 @@ OPENBLAS_BUILD_OPTS += NO_AFFINITY=1
 
 # Build for all architectures - required for distribution
 ifeq ($(OPENBLAS_DYNAMIC_ARCH), 1)
-OPENBLAS_BUILD_OPTS += DYNAMIC_ARCH=1
+OPENBLAS_BUILD_OPTS += DYNAMIC_ARCH=1 MAKE_NO_J=1
 endif
 
 # 64-bit BLAS interface
@@ -1185,9 +1185,7 @@ OPENBLAS_BUILD_OPTS += NO_AVX2=1
 endif
 
 $(BUILDDIR)/$(OPENBLAS_SRC_DIR)/config.status: $(BUILDDIR)/$(OPENBLAS_SRC_DIR)/Makefile
-ifeq ($(OS),WINNT)
-	cd $(dir $@) && patch -p1 < $(SRCDIR)/openblas-win64.patch
-endif
+	cd $(dir $@) && patch -p1 < $(SRCDIR)/openblas-make.patch
 	perl -i -ple 's/^\s*(EXTRALIB\s*\+=\s*-lSystemStubs)\s*$$/# $$1/g' $<.system
 	touch $@
 $(OPENBLAS_OBJ_SOURCE): $(BUILDDIR)/$(OPENBLAS_SRC_DIR)/config.status

deps/openblas-make.patch

@@ -0,0 +1,35 @@
+diff --git a/Makefile.system b/Makefile.system
+index b89f60e..2dbdad0 100644
+--- a/Makefile.system
++++ b/Makefile.system
+@@ -139,6 +139,10 @@ NO_PARALLEL_MAKE=0
+ endif
+ GETARCH_FLAGS  += -DNO_PARALLEL_MAKE=$(NO_PARALLEL_MAKE)
+
++ifdef MAKE_NO_J
++GETARCH_FLAGS += -DMAKE_NO_J=$(MAKE_NO_J)
++endif
++
+ ifdef MAKE_NB_JOBS
+ GETARCH_FLAGS += -DMAKE_NB_JOBS=$(MAKE_NB_JOBS)
+ endif
+diff --git a/getarch.c b/getarch.c
+index f9c49e6..dffad70 100644
+--- a/getarch.c
++++ b/getarch.c
+@@ -1012,6 +1012,7 @@ int main(int argc, char *argv[]){
+ #endif
+ #endif
+
++#ifndef MAKE_NO_J
+ #ifdef MAKE_NB_JOBS
+     printf("MAKE += -j %d\n", MAKE_NB_JOBS);
+ #elif NO_PARALLEL_MAKE==1
+@@ -1021,6 +1022,7 @@ int main(int argc, char *argv[]){
+     printf("MAKE += -j %d\n", get_num_cores());
+ #endif
+ #endif
++#endif
+
+     break;
+

deps/openblas.version

@@ -1,2 +1,2 @@
-OPENBLAS_BRANCH=v0.2.15
-OPENBLAS_SHA1=53e849f4fcae4363a64576de00e982722c7304f9
+OPENBLAS_BRANCH=v0.2.17
+OPENBLAS_SHA1=a71e8c82f6a9f73093b631e5deab1e8da716b61f