From 064951f4c84dc9116a749ace4c3fa2c8c272a883 Mon Sep 17 00:00:00 2001
From: Nikolai Nosov <nnosov@gmail.com>
Date: Wed, 5 Feb 2020 12:23:47 +0400
Subject: [PATCH] build shared version of the library

---
 include/libpst.h | 10 ++++++----
 src/Makefile     | 16 ++++++++++++++--
 2 files changed, 20 insertions(+), 6 deletions(-)

diff --git a/include/libpst.h b/include/libpst.h
index 00a7850..f53eb55 100644
--- a/include/libpst.h
+++ b/include/libpst.h
@@ -1,12 +1,14 @@
 /*
- * sysutils.h
+ * libpst.h
+ *
+ * External interface to libpst
  *
  *  Created on: Dec 28, 2019
  *      Author: nnosov
  */
 
-#ifndef PST_HANDLER_H_
-#define PST_HANDLER_H_
+#ifndef __LIBPST_EXTERNAL_H_
+#define __LIBPST_EXTERNAL_H_
 
 //system
 #include <ucontext.h>
@@ -45,4 +47,4 @@ int pst_unwind_pretty(pst_handler* h, FILE* fd);
 // save stack trace information to provided buffer in RAM
 int pst_unwind_pretty(pst_handler* h, char* buff, uint32_t buff_size);
 
-#endif /* PST_HANDLER_H_ */
+#endif /* __LIBPST_EXTERNAL_H_ */
diff --git a/src/Makefile b/src/Makefile
index 9366dd5..6b95495 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -24,6 +24,7 @@ AR	= ar rvs
 BUILD_DIR	= ./build
 RESULT_DIR	= ../build
 LIB_STATIC	= $(RESULT_DIR)/libpst.a
+LIB_SHARED	=  $(RESULT_DIR)/libpst.so
 
 #Software LABEL, BUILD number, and DATE of build 
 $(shell mkdir -p ${BUILD_DIR})
@@ -41,7 +42,7 @@ FLAGS		= -Wall -ggdb -fPIC -O3 -rdynamic -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_M
 
 .PHONY: all clean
 
-all: $(LIB_STATIC)
+all: $(LIB_STATIC) $(LIB_SHARED)
 
 clean:
 	${RM} $(BUILD_DIR)/*.o $(BUILD_DIR)/*.dep $(BIN) $(LIB_STATIC) $(BUILD_DIR)/prepare.bld $(RESULT_DIR)/prepare.res $(BUILD_DIR)/version.h
@@ -72,7 +73,7 @@ $(BUILD_DIR)/%.o: %.cpp
 #create dependencies
 	@$(CXX) -MM -MT '$@' -c $< > $@.dep $(FLAGS) $(INCS)
 
-#create library
+#create static library
 $(LIB_STATIC): $(RESULT_DIR)/prepare.res $(BUILD_DIR)/prepare.bld $(OBJ)
 	@rm -fv $@
 	@printf "Create   %-60s" $@
@@ -83,6 +84,17 @@ $(LIB_STATIC): $(RESULT_DIR)/prepare.res $(BUILD_DIR)/prepare.bld $(OBJ)
 	  echo -e "${GREEN}[DONE]${NC}"; \
 	fi
 
+#create shared library
+$(LIB_SHARED): $(RESULT_DIR)/prepare.res $(BUILD_DIR)/prepare.bld $(OBJ)
+	@rm -fv $@
+	@printf "Create   %-60s" $@
+	@OUT=$$($(CC) -shared $(OBJ) -o $@ 2>&1); \
+	if [ $$? -ne "0" ]; \
+	  then echo -e "${RED}[FAILED]${NC}";  echo -e "$$OUT"; \
+	else \
+	  echo -e "${GREEN}[DONE]${NC}"; \
+	fi
+
 #include dependencies for track changes in sourcecode and related header files
 DEPEND := $(OBJ:.o=.o.dep)
 -include $(DEPEND)