From cc1c9b2fc3a6ff29e89a2673b1a1a4d19558c6d4 Mon Sep 17 00:00:00 2001
From: midipix <writeonce@midipix.org>
Date: Sun, 24 Apr 2016 12:52:34 -0400
Subject: build system: added library version support.

---
 project/defs.mk    | 17 ++++++++++++++---
 project/version.mk | 42 ++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 56 insertions(+), 3 deletions(-)
 create mode 100644 project/version.mk

(limited to 'project')

diff --git a/project/defs.mk b/project/defs.mk
index f182b87..5a5d60b 100644
--- a/project/defs.mk
+++ b/project/defs.mk
@@ -14,9 +14,16 @@ APP_OBJS	= $(APP_SRCS:.c=.o)
 SHARED_OBJS	= $(COMMON_LOBJS) $(ARCH_LOBJS)
 STATIC_OBJS	= $(COMMON_OBJS)  $(ARCH_OBJS)
 
-SHARED_LIB	= lib/$(OS_LIB_PREFIX)$(PACKAGE)$(OS_LIB_SUFFIX)
-STATIC_LIB	= lib/$(OS_LIB_PREFIX)$(PACKAGE)$(OS_ARCHIVE_EXT)
+DSO_VER		= $(OS_LIB_PREFIX)$(PACKAGE)$(OS_LIB_SUFFIX)$(VER_XYZ)
+DSO_SONAME	= $(OS_LIB_PREFIX)$(PACKAGE)$(OS_LIB_SUFFIX)$(VER_SONAME)
+DSO_SOLINK	= $(OS_LIB_PREFIX)$(PACKAGE)$(OS_LIB_SUFFIX)
+
+SHARED_LIB	= lib/$(DSO_VER)
+SHARED_SONAME	= lib/$(DSO_SONAME)
+SHARED_SOLINK	= lib/$(DSO_SOLINK)
+
 SHARED_IMPLIB	= lib/$(OS_LIB_PREFIX)$(PACKAGE)$(OS_IMPLIB_EXT)
+STATIC_LIB	= lib/$(OS_LIB_PREFIX)$(PACKAGE)$(OS_ARCHIVE_EXT)
 
 APP		= bin/$(OS_APP_PREFIX)$(NICKNAME)$(OS_APP_SUFFIX)
 DEFAULT_APP	= bin/$(OS_APP_PREFIX)$(NICKNAME)-default$(OS_APP_SUFFIX)
@@ -25,7 +32,8 @@ STATIC_APP	= bin/$(OS_APP_PREFIX)$(NICKNAME)-static$(OS_APP_SUFFIX)
 
 CFLAGS		= $(CFLAGS_DEBUG)  $(CFLAGS_CONFIG)  $(CFLAGS_SYSROOT) \
 		   $(CFLAGS_COMMON) $(CFLAGS_CMDLINE) $(CFLAGS_HOST)	\
-		   $(CFLAGS_PATH) $(CFLAGS_OS) $(CFLAGS_SITE)
+		   $(CFLAGS_PATH) $(CFLAGS_OS) $(CFLAGS_SITE)            \
+		   $(CFLAGS_VERSION)
 
 CFLAGS_SHARED	= $(CFLAGS) $(CFLAGS_PIC) $(CFLAGS_SHARED_ATTR)
 CFLAGS_STATIC	= $(CFLAGS) $(CFLAGS_OBJ) $(CFLAGS_STATIC_ATTR)
@@ -35,6 +43,9 @@ LDFLAGS_SHARED	= $(LDFLAGS_DEBUG)   $(LDFLAGS_CONFIG)  $(LDFLAGS_SYSROOT) \
 		   $(LDFLAGS_COMMON)  $(LDFLAGS_CMDLINE) $(LDFLAGS_HOST)    \
 		   $(LDFLAGS_PATH)    $(SHARED_LIB_DEPS) $(LDFLAGS_LAST)
 
+LDFLAGS_SHARED	+= -Wl,-soname
+LDFLAGS_SHARED	+= -Wl,$(DSO_SONAME)
+
 LDFLAGS_APP	= $(LDFLAGS_DEBUG)   $(LDFLAGS_CONFIG)  $(LDFLAGS_SYSROOT) \
 		   $(LDFLAGS_COMMON)  $(LDFLAGS_CMDLINE) $(LDFLAGS_HOST)    \
 		   $(LDFLAGS_PATH)    $(SHARED_APP_DEPS) $(LDFLAGS_LAST)
diff --git a/project/version.mk b/project/version.mk
new file mode 100644
index 0000000..1d58cf3
--- /dev/null
+++ b/project/version.mk
@@ -0,0 +1,42 @@
+include $(PROJECT_DIR)/project/tagver.mk
+
+CFLAGS_VERSION	+= -D$(VER_NAMESPACE)_TAG_VER_MAJOR=$(VER_MAJOR)
+CFLAGS_VERSION	+= -D$(VER_NAMESPACE)_TAG_VER_MINOR=$(VER_MINOR)
+CFLAGS_VERSION	+= -D$(VER_NAMESPACE)_TAG_VER_PATCH=$(VER_PATCH)
+
+VER_XYZ		= .$(VER_MAJOR).$(VER_MINOR).$(VER_PATCH)
+VER_SONAME	= .$(VER_MAJOR)
+
+# libfoo.so (common)
+install-solink:		install-lib
+			rm -f $@.tmp
+			ln -s $(DSO_VER) $@.tmp
+			mv $@.tmp $(DESTDIR)$(LIBDIR)/$(DSO_SOLINK)
+
+$(SHARED_SOLINK):	$(SHARED_LIB)
+			rm -f $@.tmp
+			ln -s $(DSO_VER) $@.tmp
+			mv $@.tmp $@
+
+# libfoo.so.x (symlink)
+ifeq ($(OS_SONAME),symlink)
+$(SHARED_SONAME):	$(SHARED_LIB)
+			rm -f $@.tmp
+			ln -s $(DSO_VER) $@.tmp
+			mv $@.tmp $@
+
+install-soname:		install-lib
+			rm -f $@.tmp
+			ln -s $(DSO_VER) $@.tmp
+			mv $@.tmp $(DESTDIR)$(LIBDIR)/$(DSO_SONAME)
+endif
+
+
+# libfoo.so.x (copy)
+ifeq ($(OS_SONAME),copy)
+install-soname:		install-lib
+			cp $(SHARED_LIB) $(DESTDIR)$(LIBDIR)/$(DSO_SONAME)
+
+$(SHARED_SONAME):	$(SHARED_LIB)
+			cp $(SHARED_LIB) $(SHARED_SONAME)
+endif
-- 
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