Add shared target.

[osl.git] / Makefile

diff --git a/Makefile b/Makefile
index 100a486b06bf6fb83ac8de3bf743268ea93c3dd8..bd2c109636074c1a8f3f15a87fd287468ab41e62 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -18,6 +18,8 @@ endif
 MKDIR := mkdir -p
 RM := rm -f
 LN := ln
+LD := ld
+OBJCOPY := objcopy
 
 # libosl's versioning consists of three numbers. Let's call them x, y and z.
 # The way x, y and z are interpreted depends on the OS.
@@ -109,6 +111,8 @@ ifeq ($(format),elf)
 endif
 
 all: $(realname) $(executables) $(man_pages)
+shared: $(realname)
+
 Makefile.deps: $(wildcard *.c *.h)
        $(CC) -MM -MG *.c > $@
 osl.c fsck.c:
@@ -144,6 +148,13 @@ oslfsck.1: oslfsck
 $(realname): $(objects)
        $(CC) $(LDFLAGS) -o $@ $(objects)
 
+$(libname).sym: osl.h.in
+       sed -Ene '/^int|^const/{s/.*(osl_.*)\(.*/\1/; p;}' $< > $@
+$(libname).ga: $(objects)
+       $(LD) -r -o $@ $(objects)
+lib$(libname).a: $(libname).ga $(libname).sym
+       $(OBJCOPY) --keep-global-symbols $(libname).sym $(libname).ga $@
+
 osl_errors.h: errlist
        echo '/** public error codes of the osl library. */' > $@
        sed -e 's/\([A-Z_]*\)   .*/     E_OSL_\1/' \
@@ -162,7 +173,7 @@ osl.h: osl.h.in osl_errors.h Makefile
        echo '#endif /* _OSL_H */' >> $@
 clean:
        rm -f *.o $(realname) osl.h osl_errors.h errtab.h fsck.cmdline.h \
-               fsck.cmdline.c oslfsck
+               fsck.cmdline.c oslfsck *.a *.ga *.sym
 
 distclean: clean
        rm -f web/index.html web/oslfsck.1.html web/osl.png
@@ -185,7 +196,7 @@ install-lib: $(realname) $(headers)
 
 install: all install-bin install-man install-lib
 
-.PHONY: all clean install install-bin install-man install-lib
+.PHONY: all shared clean install install-bin install-man install-lib
 
 web/%.1.html: %.1
        man2html $< > $@