From 7bd5ce54f4d76658d99f32edc82eaf8fe93a144d Mon Sep 17 00:00:00 2001
From: Cyril Hrubis <metan@ucw.cz>
Date: Mon, 30 Apr 2012 19:25:03 +0200
Subject: [PATCH] build: Add build rule for dynamic library.

Now the build process produces and installs dynamic library. The programms are
still statically linked though.

Signed-off-by: Cyril Hrubis <metan@ucw.cz>
---
 Makefile  |   35 +++++++++++++++++++++++------------
 Makerules |    2 +-
 2 files changed, 24 insertions(+), 13 deletions(-)

diff --git a/Makefile b/Makefile
index 62bf4aa..c3f4df5 100644
--- a/Makefile
+++ b/Makefile
@@ -34,6 +34,7 @@ endif
 
 CC_CMD = $(QUIET_CC) $(CC) $(CFLAGS) -o $@ -c $<
 AR_CMD = $(QUIET_AR) $(AR) cru $@ $^
+SO_CMD = $(QUIET_LINK) $(CC) -fPIC --shared -Wl,-soname -Wl,`basename $@` $^ -o $@
 LINK_CMD = $(QUIET_LINK) $(CC) $(LDFLAGS) -o $@ $^ $(LIBS)
 MKDIR_CMD = $(QUIET_MKDIR) mkdir -p $@
 
@@ -73,7 +74,8 @@ $(OUT)/%.o : scripts/%.c | $(OUT)
 
 # --- Fitz, MuPDF, MuXPS and MuCBZ library ---
 
-FITZ_LIB := $(OUT)/libfitz.a
+FITZ_LIB_A := $(OUT)/libfitz.a
+FITZ_LIB_SO := $(OUT)/libfitz.so.1.0
 
 FITZ_SRC := $(notdir $(wildcard fitz/*.c draw/*.c))
 FITZ_SRC := $(filter-out draw_simple_scale.c, $(FITZ_SRC))
@@ -81,12 +83,19 @@ MUPDF_SRC := $(notdir $(wildcard pdf/*.c))
 MUXPS_SRC := $(notdir $(wildcard xps/*.c))
 MUCBZ_SRC := $(notdir $(wildcard cbz/*.c))
 
-$(FITZ_LIB) : $(addprefix $(OUT)/, $(FITZ_SRC:%.c=%.o))
-$(FITZ_LIB) : $(addprefix $(OUT)/, $(MUPDF_SRC:%.c=%.o))
-$(FITZ_LIB) : $(addprefix $(OUT)/, $(MUXPS_SRC:%.c=%.o))
-$(FITZ_LIB) : $(addprefix $(OUT)/, $(MUCBZ_SRC:%.c=%.o))
+FITZ_OBJECT_FILES := $(addprefix $(OUT)/, $(FITZ_SRC:%.c=%.o)) \
+                     $(addprefix $(OUT)/, $(MUPDF_SRC:%.c=%.o)) \
+                     $(addprefix $(OUT)/, $(MUXPS_SRC:%.c=%.o)) \
+                     $(addprefix $(OUT)/, $(MUCBZ_SRC:%.c=%.o))
 
-libs: $(FITZ_LIB) $(THIRD_LIBS)
+$(FITZ_LIB_A) : $(FITZ_OBJECT_FILES)
+$(FITZ_LIB_SO) : $(FITZ_OBJECT_FILES)
+
+libs: $(FITZ_LIB_A) $(FITZ_LIB_SO) $(THIRD_LIBS)
+
+$(FITZ_LIB_SO) :
+	$(SO_CMD)
+	@cd $(OUT) && ln -s `basename $(FITZ_LIB_SO)` libfitz.so
 
 # --- Generated CMAP and FONT files ---
 
@@ -135,16 +144,16 @@ $(OUT)/cmapdump.o : pdf/pdf_cmap.c pdf/pdf_cmap_parse.c
 
 MU_APPS := $(addprefix $(OUT)/, mudraw mupdfclean mupdfextract mupdfinfo mupdfshow mupdfposter)
 
-$(MU_APPS) : $(FITZ_LIB) $(THIRD_LIBS)
+$(MU_APPS) : $(FITZ_LIB_A) $(THIRD_LIBS)
 
 BUSY_SRC := $(notdir $(wildcard apps/mubusy_*.c))
 BUSY_APP := $(addprefix $(OUT)/, mubusy)
 $(BUSY_APP) : $(addprefix $(OUT)/, $(BUSY_SRC:%.c=%.o))
-$(BUSY_APP) : $(FITZ_LIB) $(THIRD_LIBS)
+$(BUSY_APP) : $(FITZ_LIB_A) $(THIRD_LIBS)
 
 ifeq "$(NOX11)" ""
 MUPDF := $(OUT)/mupdf
-$(MUPDF) : $(FITZ_LIB) $(THIRD_LIBS)
+$(MUPDF) : $(FITZ_LIB_A) $(THIRD_LIBS)
 $(MUPDF) : $(addprefix $(OUT)/, x11_main.o x11_image.o pdfapp.o)
 	$(LINK_CMD) $(X11_LIBS)
 endif
@@ -167,16 +176,18 @@ libdir ?= $(prefix)/lib
 incdir ?= $(prefix)/include
 mandir ?= $(prefix)/share/man
 
-install: $(FITZ_LIB) $(MU_APPS) $(MUPDF)
+install: $(FITZ_LIB_A) $(MU_APPS) $(MUPDF)
 	install -d $(bindir) $(libdir) $(incdir) $(mandir)/man1
-	install $(FITZ_LIB) $(libdir)
+	install $(FITZ_LIB_A) $(libdir)
+	install $(FITZ_LIB_SO) $(libdir)
+	install $(OUT)/libfitz.so $(libdir)
 	install fitz/memento.h fitz/fitz.h pdf/mupdf.h xps/muxps.h cbz/mucbz.h $(incdir)
 	install $(MU_APPS) $(MUPDF) $(bindir)
 	install $(wildcard apps/man/*.1) $(mandir)/man1
 
 # --- Clean and Default ---
 
-all: $(THIRD_LIBS) $(FITZ_LIB) $(MU_APPS) $(MUPDF) $(BUSY_APP)
+all: $(THIRD_LIBS) $(FITZ_LIB_A) $(FITZ_LIB_SO) $(MU_APPS) $(MUPDF) $(BUSY_APP)
 
 clean:
 	rm -rf $(OUT)
diff --git a/Makerules b/Makerules
index 26eab3c..f3833fb 100644
--- a/Makerules
+++ b/Makerules
@@ -3,7 +3,7 @@
 OS ?= $(shell uname)
 OS := $(OS:MINGW%=MINGW)
 
-CFLAGS += -Wall
+CFLAGS += -Wall -fPIC
 
 ifeq "$(build)" "debug"
 CFLAGS += -pipe -g -DDEBUG
-- 
1.7.10