refine folder as follow:

├── src
├── include
├── gear-lib
├── build.sh
└── Makefile

Makefile

@@ -0,0 +1,118 @@
+###############################################################################
+# common
+###############################################################################
+#ARCH: linux/pi/android/ios/
+ARCH		?= linux
+CROSS_PREFIX	?=
+OUTPUT		?= /usr/local
+BUILD_DIR	:= $(shell pwd)/../build/
+ARCH_INC	:= $(BUILD_DIR)/$(ARCH).inc
+COLOR_INC	:= $(BUILD_DIR)/color.inc
+
+ifeq ($(ARCH_INC), $(wildcard $(ARCH_INC)))
+include $(ARCH_INC)
+endif
+
+
+CC	= $(CROSS_PREFIX)gcc
+CXX	= $(CROSS_PREFIX)g++
+LD	= $(CROSS_PREFIX)ld
+AR	= $(CROSS_PREFIX)ar
+STRIP   = $(CROSS_PREFIX)strip
+
+ifeq ($(COLOR_INC), $(wildcard $(COLOR_INC)))
+include $(COLOR_INC)
+else
+CC_V	= $(CC)
+CXX_V	= $(CXX)
+LD_V	= $(LD)
+AR_V	= $(AR)
+CP_V	= $(CP)
+RM_V	= $(RM)
+endif
+
+###############################################################################
+# target and object
+###############################################################################
+LIBNAME		= libgear
+VERSION_SH	= $(shell pwd)/src/version.sh $(LIBNAME)
+VER		= $(shell $(VERSION_SH); awk '/define\ $(LIBNAME)_version/{print $$3}' version.h)
+TGT_LIB_H	= $(LIBNAME).h
+TGT_LIB_A	= $(LIBNAME).a
+TGT_LIB_SO	= $(LIBNAME).so
+TGT_LIB_SO_VER	= $(TGT_LIB_SO).${VER}
+
+OBJS_LIB := $(patsubst %.c,%.o,$(wildcard src/*.c))
+
+
+###############################################################################
+# cflags and ldflags
+###############################################################################
+
+ifeq ($(MODE), release)
+CFLAGS	:= -O2 -Wall -Werror -fPIC
+LTYPE   := release
+else
+CFLAGS	:= -g -Wall -Werror -fPIC
+LTYPE   := debug
+endif
+ifeq ($(OUTPUT),/usr/local)
+OUTLIBPATH := /usr/local
+else
+OUTLIBPATH := $(OUTPUT)/$(LTYPE)
+endif
+CFLAGS	+= $($(ARCH)_CFLAGS)
+CFLAGS	+= -Iinclude
+CFLAGS	+= -I$(OUTPUT)/include
+
+CFLAGS	+= -DNO_CRYPTO
+
+SHARED	:= -shared
+
+LDFLAGS	:= $($(ARCH)_LDFLAGS)
+LDFLAGS	+= -pthread
+
+###############################################################################
+# target
+###############################################################################
+.PHONY : all clean
+
+TGT	:= $(TGT_LIB_A)
+TGT	+= $(TGT_LIB_SO)
+
+OBJS	:= $(OBJS_LIB)
+
+all: $(TGT)
+
+%.o:%.c
+	$(CC_V) -c $(CFLAGS) $< -o $@
+
+$(TGT_LIB_A): $(OBJS_LIB)
+	$(AR_V) rcs $@ $^
+
+$(TGT_LIB_SO): $(OBJS_LIB)
+	$(LD_V) -o $@ $^ $(SHARED)
+	@mv $(TGT_LIB_SO) $(TGT_LIB_SO_VER)
+	@ln -sf $(TGT_LIB_SO_VER) $(TGT_LIB_SO)
+
+
+clean:
+	$(RM_V) -f $(OBJS)
+	$(RM_V) -f $(TGT)
+	$(RM_V) -f version.h
+	$(RM_V) -f $(TGT_LIB_SO)*
+	$(RM_V) -f $(TGT_LIB_SO_VER)
+
+install:
+	$(MAKEDIR_OUTPUT)
+	if [ "$(MODE)" = "release" ];then $(STRIP) $(TGT); fi
+	$(CP_V) -r $(TGT_LIB_H)  $(OUTPUT)/include
+	$(CP_V) -r $(TGT_LIB_A)  $(OUTLIBPATH)/lib
+	$(CP_V) -r $(TGT_LIB_SO) $(OUTLIBPATH)/lib
+	$(CP_V) -r $(TGT_LIB_SO_VER) $(OUTLIBPATH)/lib
+
+uninstall:
+	cd $(OUTPUT)/include/ && rm -f $(TGT_LIB_H)
+	$(RM_V) -f $(OUTLIBPATH)/lib/$(TGT_LIB_A)
+	$(RM_V) -f $(OUTLIBPATH)/lib/$(TGT_LIB_SO)
+	$(RM_V) -f $(OUTLIBPATH)/lib/$(TGT_LIB_SO_VER)

build.sh

@@ -79,7 +79,7 @@ config_ios()
 config_common()
 {
 	STRIP=${CROSS_PREFIX}strip
-	LIBS_DIR=`pwd`
+	LIBS_DIR=`pwd`/gear-lib
 	OUTPUT=${LIBS_DIR}/output/${ARCH}/
 }
 
@@ -122,6 +122,7 @@ build_module()
 		return
 	fi
 	cd ${LIBS_DIR}/${MODULE}/
+	echo "cd ${LIBS_DIR}/${MODULE}/"
 
 	case $ACTION in
 	"clean")

build/autogen_lib.sh

@@ -31,8 +31,8 @@ usage()
 
 mkdir_libfoo()
 {
-	mkdir ${MODULE}
-	cd ${MODULE}
+	mkdir gear-lib/${MODULE}
+	cd gear-lib/${MODULE}
 }
 
 autogen_libfoo_h()
@@ -328,6 +328,14 @@ autogen_version_h
 chmod a+x ${VERSION_SH}
 }
 
+link_libfoo()
+{
+	cd ../../include/
+	ln -s ../gear-lib/${LIBFOO_H} .
+	cd ../src/
+	ln -s ../gear-lib/${LIBFOO_C} .
+}
+
 case $# in
 0)
 	usage;
@@ -345,4 +353,5 @@ autogen_makefile_nmake
 autogen_version_sh
 autogen_android_mk
 autogen_readme_md
+link_libfoo
 

gear-lib/libbase64/Makefile

@@ -5,7 +5,7 @@
 ARCH		?= linux
 CROSS_PREFIX	?=
 OUTPUT		?= /usr/local
-BUILD_DIR	:= $(shell pwd)/../build/
+BUILD_DIR	:= $(shell pwd)/../../build/
 ARCH_INC	:= $(BUILD_DIR)/$(ARCH).inc
 COLOR_INC	:= $(BUILD_DIR)/color.inc
 

gear-lib/libconfig/Makefile

@@ -5,7 +5,7 @@
 ARCH		?= linux
 CROSS_PREFIX	?=
 OUTPUT		?= /usr/local
-BUILD_DIR	:= $(shell pwd)/../build/
+BUILD_DIR	:= $(shell pwd)/../../build/
 ARCH_INC	:= $(BUILD_DIR)/$(ARCH).inc
 COLOR_INC	:= $(BUILD_DIR)/color.inc
 

gear-lib/libconfig/libconfig++/Makefile

@@ -13,7 +13,7 @@
 ARCH		?= linux
 CROSS_PREFIX	?=
 OUTPUT		?= /usr/local
-BUILD_DIR	:= $(shell pwd)/../build/
+BUILD_DIR	:= $(shell pwd)/../../build/
 ARCH_INC	:= $(BUILD_DIR)/$(ARCH).inc
 COLOR_INC	:= $(BUILD_DIR)/color.inc