symbol versioning demo

[tridge/junkcode.git] / shlib / Makefile

diff --git a/shlib/Makefile b/shlib/Makefile
new file mode 100644 (file)
index 0000000..3eab8d2
--- /dev/null
+++ b/shlib/Makefile
@@ -0,0 +1,37 @@
+CFLAGS=-Wall
+
+SONAME1=libversion1.so
+SONAME2=libversion2.so
+SYMVER1=symversion1
+SYMVER2=symversion2
+
+all: main public/module.so
+
+private:
+       mkdir -p private
+
+public:
+       mkdir -p public
+
+vscript1:
+       echo "$(SYMVER1) { global: *; };" > vscript1
+
+vscript2:
+       echo "$(SYMVER2) { global: *; };" > vscript2
+
+public/$(SONAME1): lib.c vscript1 public
+       gcc $(CFLAGS) -Wl,-soname=$(SONAME1) -Wl,--version-script=vscript1 -DLIBVERSION=\"version1\" -fPIC -shared lib.c -o public/$(SONAME1)
+
+private/$(SONAME2): lib.c vscript2 private
+       gcc $(CFLAGS) -Wl,-soname=$(SONAME2) -Wl,--version-script=vscript2 -DLIBVERSION=\"version2\" -fPIC -shared lib.c -o private/$(SONAME2)
+
+public/module.so: module.c private/$(SONAME2)
+       gcc $(CFLAGS) -Wl,--rpath=$(PWD)/private -fPIC -shared module.c -o public/module.so private/$(SONAME2)
+
+main: main.c public/$(SONAME1) public/module.so
+       gcc $(CFLAGS) -Wl,--rpath=$(PWD)/public main.c -o main public/$(SONAME1) -ldl
+
+clean:
+       rm -rf *.o *.so *~ private public main vscript*
+
+