From 9db4b1d801624a00591b7aafd426d6dd23547443 Mon Sep 17 00:00:00 2001
From: Gustavo Alvarez <462213+sl1pkn07@users.noreply.github.com>
Date: Mon, 8 Apr 2019 18:16:54 +0200
Subject: Add pkgconfig file (#190)

---
 src/Makefile   | 28 ++++++++++++++++++++++++----
 src/nccl.pc.in | 10 ++++++++++
 2 files changed, 34 insertions(+), 4 deletions(-)
 create mode 100755 src/nccl.pc.in

diff --git a/src/Makefile b/src/Makefile
index 2d32dca..b5baa29 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -17,16 +17,20 @@ LIBSRCFILES := init.cc channel.cc bootstrap.cc transport.cc enqueue.cc \
 ##### lib files
 LIBNAME     := libnccl.so
 STATICLIBNAME := libnccl_static.a
+##### pkgconfig files
+PKGCONFIGFILE := nccl.pc
 ##### dirs
 BUILDDIR ?= $(abspath ../build)
 INCDIR := $(BUILDDIR)/include
 LIBDIR := $(BUILDDIR)/lib
 OBJDIR := $(BUILDDIR)/obj
+PKGDIR := $(BUILDDIR)/lib/pkgconfig
 ##### target files
 INCTARGETS := $(INCEXPORTS:%=$(INCDIR)/%)
 LIBSONAME  := $(LIBNAME:%=%.$(NCCL_MAJOR))
 LIBTARGET  := $(LIBNAME:%=%.$(NCCL_MAJOR).$(NCCL_MINOR).$(NCCL_PATCH))
 STATICLIBTARGET := $(STATICLIBNAME)
+PKGTARGET  := $(PKGCONFIGFILE)
 LIBOBJ     := $(LIBSRCFILES:%.cc=$(OBJDIR)/%.o)
 DEPFILES   := $(LIBOBJ:%.o=%.d)
 LDFLAGS    += -L${CUDA_LIB} -lcudart_static -lpthread -lrt -ldl
@@ -36,7 +40,7 @@ DEVICELIB  := $(BUILDDIR)/obj/collectives/device/colldevice.a
 ##### rules
 build : lib staticlib
 
-lib : $(INCTARGETS) $(LIBDIR)/$(LIBTARGET)
+lib : $(INCTARGETS) $(LIBDIR)/$(LIBTARGET) $(PKGDIR)/$(PKGTARGET)
 
 staticlib : $(LIBDIR)/$(STATICLIBTARGET)
 
@@ -53,7 +57,7 @@ $(INCDIR)/nccl.h : nccl.h.in
 # NCCL_VERSION(X,Y,Z) ((X) * 1000 + (Y) * 100 + (Z))
 	@$(eval NCCL_VERSION := $(shell printf "%d%d%02d" $(NCCL_MAJOR) $(NCCL_MINOR) $(NCCL_PATCH)))
 	mkdir -p $(INCDIR)
-	printf "Generating %-35s > %s\n" $< $@
+	@printf "Generating %-35s > %s\n" $< $@
 	sed -e "s/\$${nccl:Major}/$(NCCL_MAJOR)/g" \
 	    -e "s/\$${nccl:Minor}/$(NCCL_MINOR)/g" \
 	    -e "s/\$${nccl:Patch}/$(NCCL_PATCH)/g" \
@@ -77,6 +81,15 @@ $(LIBDIR)/$(STATICLIBTARGET): $(LIBOBJ) $(DEVICELIB)
 	ar cr $@ $(LIBOBJ) $(TMP)/*.o
 	rm -Rf $(TMP)
 
+$(PKGDIR)/nccl.pc : nccl.pc.in
+	mkdir -p $(PKGDIR)
+	@printf "Generating %-35s > %s\n" $< $@
+	sed -e 's|$${nccl:Prefix}|\$(PREFIX)|g' \
+	    -e "s/\$${nccl:Major}/$(NCCL_MAJOR)/g" \
+	    -e "s/\$${nccl:Minor}/$(NCCL_MINOR)/g" \
+	    -e "s/\$${nccl:Patch}/$(NCCL_PATCH)/g" \
+	    $< > $@
+
 $(INCDIR)/%.h : %.h
 	@printf "Grabbing   %-35s > %s\n" $< $@
 	mkdir -p $(INCDIR)
@@ -87,6 +100,11 @@ $(INCDIR)/nccl_%.h : include/nccl_%.h
 	mkdir -p $(INCDIR)
 	cp -f $< $@
 
+$(PKGDIR)/%.pc : %.pc
+	@printf "Grabbing   %-35s > %s\n" $< $@
+	mkdir -p $(PKGDIR)
+	cp -f $< $@
+
 $(OBJDIR)/%.o : %.cc
 	@printf "Compiling  %-35s > %s\n" $< $@
 	mkdir -p `dirname $@`
@@ -98,13 +116,15 @@ $(OBJDIR)/%.o : %.cc
 	@rm -f $(@:%.o=%.d.tmp)
 
 clean :
-	rm -rf ${INCDIR} ${LIBDIR} ${OBJDIR}
+	rm -rf ${INCDIR} ${LIBDIR} ${PKGDIR} ${OBJDIR}
 	$(MAKE) -C collectives/device clean
 
 install : lib
 	mkdir -p $(PREFIX)/lib
+	mkdir -p $(PREFIX)/lib/pkgconfig
 	mkdir -p $(PREFIX)/include
-	cp -P -v $(BUILDDIR)/lib/* $(PREFIX)/lib/
+	cp -P -v $(BUILDDIR)/lib/lib* $(PREFIX)/lib/
+	cp -P -v $(BUILDDIR)/lib/pkgconfig/* $(PREFIX)/lib/pkgconfig/
 	cp -v $(BUILDDIR)/include/* $(PREFIX)/include/
 
 FILESTOFORMAT := $(shell find . -name ".\#*" -prune -o \( -name "*.cc" -o -name "*.h" \) -print | grep -v -E 'ibvwrap.h|nvmlwrap.h|nccl.h')
diff --git a/src/nccl.pc.in b/src/nccl.pc.in
new file mode 100755
index 0000000..0d98494
--- /dev/null
+++ b/src/nccl.pc.in
@@ -0,0 +1,10 @@
+prefix=${nccl:Prefix}
+exec_prefix=${prefix}
+libdir=${exec_prefix}/lib
+includedir=${prefix}/include
+
+Name: nccl
+Description: Optimized primitives for collective multi-GPU communication
+Version: ${nccl:Major}.${nccl:Minor}.${nccl:Patch}
+Libs: -L${libdir} -lnccl
+Cflags: -I${includedir}
-- 
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