From 487407d722714f13e8a06d1a9d89f48a5738191e Mon Sep 17 00:00:00 2001
From: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Date: Fri, 12 Jul 2019 12:20:38 +0200
Subject: [PATCH] Makefile: add targets to manage static building

Add static-lib, shared-lib, install-static-lib and install-shared-lib
targets to allow the user to build giflib when dynamic library support
is not available or enable on the toolchain

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
[Upstream status:
https://sourceforge.net/p/giflib/code/merge-requests/7]
---
 Makefile | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)

diff --git a/Makefile b/Makefile
index b2bf6de..111f52f 100644
--- a/Makefile
+++ b/Makefile
@@ -61,10 +61,17 @@ UTILS = $(INSTALLABLE) \
 
 LDLIBS=libgif.a -lm
 
-all: libgif.so libgif.a libutil.so libutil.a $(UTILS)
+SHARED_LIBS = libgif.so libutil.so
+STATIC_LIBS = libgif.a libutil.a
+
+all: shared-lib static-lib $(UTILS)
 	$(MAKE) -C doc
 
-$(UTILS):: libgif.a libutil.a
+$(UTILS):: $(STATIC_LIBS)
+
+shared-lib: $(SHARED_LIBS)
+
+static-lib: $(STATIC_LIBS)
 
 libgif.so: $(OBJECTS) $(HEADERS)
 	$(CC) $(CFLAGS) -shared $(LDFLAGS) -Wl,-soname -Wl,libgif.so.$(LIBMAJOR) -o libgif.so $(OBJECTS)
@@ -79,7 +86,7 @@ libutil.a: $(UOBJECTS) $(UHEADERS)
 	$(AR) rcs libutil.a $(UOBJECTS)
 
 clean:
-	rm -f $(UTILS) $(TARGET) libgetarg.a libgif.a libgif.so libutil.a libutil.so *.o
+	rm -f $(UTILS) $(TARGET) libgetarg.a $(SHARED_LIBS) $(STATIC_LIBS) *.o
 	rm -f libgif.so.$(LIBMAJOR).$(LIBMINOR).$(LIBPOINT)
 	rm -f libgif.so.$(LIBMAJOR)
 	rm -fr doc/*.1 *.html doc/staging
@@ -96,12 +103,15 @@ install-bin: $(INSTALLABLE)
 install-include:
 	$(INSTALL) -d "$(DESTDIR)$(INCDIR)"
 	$(INSTALL) -m 644 gif_lib.h "$(DESTDIR)$(INCDIR)"
-install-lib:
+install-static-lib:
 	$(INSTALL) -d "$(DESTDIR)$(LIBDIR)"
 	$(INSTALL) -m 644 libgif.a "$(DESTDIR)$(LIBDIR)/libgif.a"
+install-shared-lib:
+	$(INSTALL) -d "$(DESTDIR)$(LIBDIR)"
 	$(INSTALL) -m 755 libgif.so "$(DESTDIR)$(LIBDIR)/libgif.so.$(LIBVER)"
 	ln -sf libgif.so.$(LIBVER) "$(DESTDIR)$(LIBDIR)/libgif.so.$(LIBMAJOR)"
 	ln -sf libgif.so.$(LIBMAJOR) "$(DESTDIR)$(LIBDIR)/libgif.so"
+install-lib: install-static-lib install-shared-lib
 install-man:
 	$(INSTALL) -d "$(DESTDIR)$(MANDIR)/man1"
 	$(INSTALL) -m 644 doc/*.1 "$(DESTDIR)$(MANDIR)/man1"
-- 
2.20.1