ST: Fix build issues for Cygwin64 (#20)

.gitignore

@@ -1,5 +1,6 @@
 DARWIN_*_DBG
 LINUX_*_DBG
+CYGWIN_*_DBG
 obj
 st.pc
 .idea

.run/cygwin64-debug.run.xml

@@ -0,0 +1,8 @@
+<component name="ProjectRunConfigurationManager">
+  <configuration default="false" name="cygwin64-debug" type="MAKEFILE_TARGET_RUN_CONFIGURATION" factoryName="Makefile">
+    <makefile filename="Makefile" target="cygwin64-debug" workingDirectory="$PROJECT_DIR$" arguments="">
+      <envs />
+    </makefile>
+    <method v="2" />
+  </configuration>
+</component>

.run/darwin-debug.run.xml

@@ -0,0 +1,8 @@
+<component name="ProjectRunConfigurationManager">
+  <configuration default="false" name="darwin-debug" type="MAKEFILE_TARGET_RUN_CONFIGURATION" factoryName="Makefile">
+    <makefile filename="Makefile" target="darwin-debug" workingDirectory="$PROJECT_DIR$" arguments="">
+      <envs />
+    </makefile>
+    <method v="2" />
+  </configuration>
+</component>

Makefile

@@ -58,6 +58,12 @@ ECHO        = /bin/echo
 BUILD       = DBG
 TARGETDIR   = $(OS)_$(shell uname -r)_$(BUILD)
 
+# For cygwin/windows, the 'uname -r' generate path with parentheses,
+# which cause the make fails, so we use 'uname -s' instead.
+ifeq ($(OS), CYGWIN64)
+TARGETDIR   = $(OS)_$(shell uname -s)_$(BUILD)
+endif
+
 DEFINES     = -D$(OS)
 CFLAGS      =
 SFLAGS      =
@@ -73,7 +79,8 @@ DESC        = st.pc
 # Possible targets:
 
 TARGETS     = darwin-debug darwin-optimized         \
-              linux-debug linux-optimized
+              linux-debug linux-optimized           \
+              cygwin64-debug
 
 UTEST_TARGETS = darwin-debug-utest linux-debug-utest \
                 darwin-debug-gcov linux-debug-gcov
@@ -102,6 +109,14 @@ OTHER_FLAGS = -Wall
 DEFINES     += -DMD_HAVE_EPOLL
 endif
 
+ifeq ($(OS), CYGWIN64)
+EXTRA_OBJS  = $(TARGETDIR)/md_cygwin64.o
+SFLAGS      = -fPIC
+LDFLAGS     = -shared -soname=$(SONAME) -lc
+OTHER_FLAGS = -Wall
+DEFINES     += -DMD_HAVE_SELECT
+endif
+
 #
 # End of platform section.
 ##########################
@@ -249,6 +264,9 @@ $(TARGETDIR)/md_linux.o: md_linux.S
 $(TARGETDIR)/md_darwin.o: md_darwin.S
 	$(CC) $(CFLAGS) -c $< -o $@
 
+$(TARGETDIR)/md_cygwin64.o: md_cygwin64.S
+	$(CC) $(CFLAGS) -c $< -o $@
+
 $(TARGETDIR)/%.o: %.c common.h md.h
 	$(CC) $(CFLAGS) -c $< -o $@
 
@@ -281,6 +299,9 @@ linux-debug:
 linux-optimized:
 	$(MAKE) OS="LINUX" BUILD="OPT"
 
+cygwin64-debug:
+	$(MAKE) OS="CYGWIN64" BUILD="DBG"
+
 darwin-debug-utest:
 	@echo "Build utest for state-threads"
 	$(MAKE) OS="DARWIN" BUILD="DBG"