From 5765d608cc2fc602c038dd8aaf5e747986fac25b Mon Sep 17 00:00:00 2001
From: Peter Jin <peterhaijin@gmail.com>
Date: Wed, 23 Nov 2016 20:29:39 -0800
Subject: [PATCH] Add a static library target "staticlib" to the Makefile.

Rename the static library "libnccl_static.a" to disambiguate from the
dynamic libraries.
---
 Makefile | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/Makefile b/Makefile
index 64243e8..a706879 100644
--- a/Makefile
+++ b/Makefile
@@ -60,12 +60,13 @@ CUDA_MAJOR = $(shell echo $(CUDA_VERSION) | cut -d "." -f 1)
 CUDA_MINOR = $(shell echo $(CUDA_VERSION) | cut -d "." -f 2)
 CXXFLAGS  += -DCUDA_MAJOR=$(CUDA_MAJOR) -DCUDA_MINOR=$(CUDA_MINOR)
 
-.PHONY : lib clean test mpitest install deb debian debclean forlib fortest forclean
-.DEFAULT : lib
+.PHONY : all lib staticlib clean test mpitest install deb debian debclean forlib fortest forclean
+.DEFAULT : all
 
 INCEXPORTS  := nccl.h
 LIBSRCFILES := libwrap.cu core.cu all_gather.cu all_reduce.cu broadcast.cu reduce.cu reduce_scatter.cu
 LIBNAME     := libnccl.so
+STATICLIBNAME := libnccl_static.a
 
 INCDIR := $(BUILDDIR)/include
 LIBDIR := $(BUILDDIR)/lib
@@ -74,12 +75,17 @@ OBJDIR := $(BUILDDIR)/obj
 INCTARGETS := $(patsubst %, $(INCDIR)/%, $(INCEXPORTS))
 LIBSONAME  := $(patsubst %,%.$(NCCL_MAJOR),$(LIBNAME))
 LIBTARGET  := $(patsubst %,%.$(NCCL_MAJOR).$(NCCL_MINOR).$(NCCL_PATCH),$(LIBNAME))
+STATICLIBTARGET := $(STATICLIBNAME)
 LIBLINK    := $(patsubst lib%.so, -l%, $(LIBNAME))
 LIBOBJ     := $(patsubst %.cu, $(OBJDIR)/%.o, $(filter %.cu, $(LIBSRCFILES)))
 DEPFILES   := $(patsubst %.o, %.d, $(LIBOBJ)) $(patsubst %, %.d, $(TESTBINS)) $(patsubst %, %.d, $(MPITESTBINS))
 
+all : lib staticlib
+
 lib : $(INCTARGETS) $(LIBDIR)/$(LIBTARGET)
 
+staticlib : $(INCTARGETS) $(LIBDIR)/$(STATICLIBTARGET)
+
 -include $(DEPFILES)
 
 $(LIBDIR)/$(LIBTARGET) : $(LIBOBJ)
@@ -89,6 +95,11 @@ $(LIBDIR)/$(LIBTARGET) : $(LIBOBJ)
 	ln -sf $(LIBSONAME) $(LIBDIR)/$(LIBNAME)
 	ln -sf $(LIBTARGET) $(LIBDIR)/$(LIBSONAME)
 
+$(LIBDIR)/$(STATICLIBTARGET) : $(LIBOBJ)
+	@printf "Archiving %-35s > %s\n" $(STATICLIBTARGET) $@
+	mkdir -p $(LIBDIR)
+	ar cr $@ $(LIBOBJ)
+
 $(INCDIR)/%.h : src/%.h
 	@printf "Grabbing  %-35s > %s\n" $< $@
 	mkdir -p $(INCDIR)