[PATCH gwproxy v2 1/3] io_uring: Add liburing to the code base

[Ahmad Gani <reyuki@gnuweeb.org>]

Make the build process easier.
Some people may not have had liburing installed on their system.

Signed-off-by: Ahmad Gani <reyuki@gnuweeb.org>
---
 .gitmodules  |  4 ++++
 Makefile     | 10 ++++++++--
 src/liburing |  1 +
 3 files changed, 13 insertions(+), 2 deletions(-)
 create mode 100644 .gitmodules
 create mode 160000 src/liburing

diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 000000000000..d49ed8e6e06f
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,4 @@
+[submodule "src/liburing"]
+	path = src/liburing
+	url = https://github.com/axboe/liburing
+	branch = master
diff --git a/Makefile b/Makefile
index 0fea43c9fce7..e5e0f756936a 100644
--- a/Makefile
+++ b/Makefile
@@ -9,6 +9,7 @@ LIBS = -lpthread
 DEPFLAGS = -MMD -MP -MF $@.d
 LDFLAGS_SHARED = $(LDFLAGS) -shared -fpic -fPIC
 GWPROXY_DIR = ./src/gwproxy
+LIBURING_DIR = ./src/liburing/src
 
 ifeq ($(SANITIZE),1)
 	CFLAGS += -fsanitize=address -fsanitize=undefined
@@ -30,6 +31,8 @@ ifeq ($(STATIC),1)
 	LDFLAGS += -static
 endif
 
+LIBURING_TARGET = $(LIBURING_DIR)/liburing.a
+
 GWPROXY_TARGET = gwproxy
 GWPROXY_CC_SOURCES = \
 	$(GWPROXY_DIR)/gwproxy.c \
@@ -39,7 +42,7 @@ GWPROXY_CC_SOURCES = \
 
 ifeq ($(CONFIG_IO_URING),1)
 	CFLAGS += -DCONFIG_IO_URING
-	LIBS += /usr/lib/liburing.a
+	LIBS += $(LIBURING_TARGET)
 	GWPROXY_CC_SOURCES += $(GWPROXY_DIR)/ev/io_uring.c
 endif
 
@@ -66,7 +69,10 @@ ALL_DEPFILES = $(ALL_OBJECTS:.o=.o.d)
 
 ALL_GWPROXY_OBJECTS = $(GWPROXY_OBJECTS) $(LIBGWPSOCKS5_OBJECTS) $(LIBGWDNS_OBJECTS)
 
-all: $(GWPROXY_TARGET) $(LIBGWPSOCKS5_TARGET) $(LIBGWDNS_TARGET)
+all: $(GWPROXY_TARGET) $(LIBGWPSOCKS5_TARGET) $(LIBGWDNS_TARGET) $(LIBURING_TARGET)
+
+$(LIBURING_TARGET): $(LIBURING_DIR)
+	@$(MAKE) -C $^
 
 $(GWPROXY_TARGET): $(ALL_GWPROXY_OBJECTS)
 	$(CC) $(LDFLAGS) -o $@ $^ $(LIBS)
diff --git a/src/liburing b/src/liburing
new file mode 160000
index 000000000000..f2b6fb85b79b
--- /dev/null
+++ b/src/liburing
@@ -0,0 +1 @@
+Subproject commit f2b6fb85b79baf17f2c0ea24a357c652caa2d7ba
-- 
Ahmad Gani