lib: extend to create .so versions of the libraries

Signed-off-by: Alejandro Mery <amery@geeks.cl>

lib/Makefile

@@ -8,23 +8,33 @@ O	?= $(srctree)/out
 
 OBJDIR	:= $(O)/lib
 DEPS	:= $(OBJDIR)/deps.mk
+SRCS	:=
 
 INCLUDES = -I$(srctree)/include
 CFLAGS	 = -O2
 CFLAGS  += -Wall -Wextra -std=c99 -D_POSIX_C_SOURCE=200112L
+CFLAGS	+= -fPIC
 CFLAGS  += $(INCLUDES)
 
-SRCS	:=
-
 all: libs
 
 include libfex/Makefile
 
-# *.a
-%.a:
+# libraries
+libs: $(LIBS) $(SOLIBS)
+
+$(LIBS):
 	@mkdir -vp $(@D)
 	$(AR) rcs $@ $^
 
+$(SOLIBS):
+	@mkdir -vp $(@D)
+	$(CC) -shared -Wl,-soname,$(@F) -o $@ $^
+	x=$@; while [ "$$x" = "$${x%.so}" ]; do \
+	  x=$${x%.*}; \
+	  ln -snvf $(@F) $$x; \
+	done
+
 # *.o
 %.o: SRC=$(patsubst $(OBJDIR)/%.o,%.c,$@)
 %.o:

lib/libfex/Makefile

 libfex_SOURCES	:= $(wildcard libfex/*.c)
 libfex_OBJS	:= $(patsubst %.c,$(OBJDIR)/%.o,$(libfex_SOURCES))
 libfex_LIB	:= $(O)/libfex.a
+libfex_SO	:= $(O)/libfex.so.1.0
 
 SRCS	+= $(libfex_SOURCES)
 OBJS	+= $(libfex_OBJS)
 
-libs: $(libfex_LIB)
-
+LIBS	+= $(libfex_LIB)
 $(libfex_LIB): $(libfex_OBJS)
+
+SOLIBS	+= $(libfex_SO)
+$(libfex_SO): $(libfex_OBJS)