libsepol: fix static-only library build

Add support for static-only build

Instead of unconditionally building shared libraries, this patch

improves the libsepol build system with a "STATIC" variable, which

when defined to some non-empty value, will disable the build of shared

libraries. It allows to support cases where the target architecture

does not have support for shared libraries.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

Index: b/src/Makefile

===================================================================

--- a/src/Makefile

+++ b/src/Makefile

@@ -17,7 +17,12 @@

 CFLAGS ?= -Werror -Wall -W -Wundef -Wshadow -Wmissing-noreturn -Wmissing-format-attribute

 override CFLAGS += -I. -I../include -D_GNU_SOURCE

-all: $(LIBA) $(LIBSO) $(LIBPC)

+ALL_TARGETS = $(LIBA) $(LIBPC)

+ifeq ($(STATIC),)

+ALL_TARGETS += $(LIBSO)

+endif

+

+all: $(ALL_TARGETS)

 $(LIBA):  $(OBJS)

 	$(AR) rcs $@ $^

@@ -39,11 +44,13 @@

 install: all

 	test -d $(LIBDIR) || install -m 755 -d $(LIBDIR)

 	install -m 644 $(LIBA) $(LIBDIR)

-	test -d $(SHLIBDIR) || install -m 755 -d $(SHLIBDIR)

-	install -m 755 $(LIBSO) $(SHLIBDIR)

 	test -d $(LIBDIR)/pkgconfig || install -m 755 -d $(LIBDIR)/pkgconfig

 	install -m 644 $(LIBPC) $(LIBDIR)/pkgconfig

+ifeq ($(STATIC),)

+	test -d $(SHLIBDIR) || install -m 755 -d $(SHLIBDIR)

+	install -m 755 $(LIBSO) $(SHLIBDIR)

 	cd $(LIBDIR) && ln -sf ../../`basename $(SHLIBDIR)`/$(LIBSO) $(TARGET)

+endif

 relabel:

 	/sbin/restorecon $(SHLIBDIR)/$(LIBSO)