From 16351a7ebaf318d21632bbaabf0675a70bb67dc7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tom=C3=A1=C5=A1=20Chv=C3=A1tal?= <tchvatal@suse.com>
Date: Tue, 3 Dec 2019 12:07:19 +0100
Subject: [PATCH 3/5] Generate both shared and static libraries

---
 c/Makefile   | 14 ++++++++++----
 cpp/Makefile | 14 ++++++++++----
 2 files changed, 20 insertions(+), 8 deletions(-)

diff --git a/c/Makefile b/c/Makefile
index bf79462..38eda2d 100644
--- a/c/Makefile
+++ b/c/Makefile
@@ -51,16 +51,19 @@ CFLAGS ?= -std=c99 -O
 # ---- Targets to build ----
 
 LIB = qrcodegen
-LIBFILE = lib$(LIB).a
+ARFILE = lib$(LIB).a
+LIBFILE = lib$(LIB).so
+# Bump the soname number when the ABI changes and gets incompatible
+SO_NAME = $(LIBFILE).1
 LIBOBJ = qrcodegen.o
 MAINS = qrcodegen-demo qrcodegen-test qrcodegen-worker
 
 # Build all binaries
-all: $(LIBFILE) $(MAINS)
+all: $(LIBFILE) $(ARFILE) $(MAINS)
 
 # Delete build output
 clean:
-	rm -f -- $(LIBOBJ) $(LIBFILE) $(MAINS:=.o) $(MAINS)
+	rm -f -- $(LIBOBJ) $(LIBFILE) $(ARFILE) $(MAINS:=.o) $(MAINS)
 	rm -rf .deps
 
 # Executable files
@@ -72,9 +75,12 @@ qrcodegen-test: qrcodegen-test.c $(LIBOBJ:%.o=%.c)
 	$(CC) $(CFLAGS) -DQRCODEGEN_TEST -o $@ $^
 
 # The library
-$(LIBFILE): $(LIBOBJ)
+$(ARFILE): $(LIBOBJ)
 	$(AR) -crs $@ -- $^
 
+$(LIBFILE): $(LIBOBJ)
+	$(CC) -shared -Wl,-soname,$(SO_NAME) $(LDFLAGS) -o $@ $^
+
 # Object files
 %.o: %.c .deps/timestamp
 	$(CC) $(CFLAGS) -fPIC -c -o $@ -MMD -MF .deps/$*.d $<
diff --git a/cpp/Makefile b/cpp/Makefile
index deb8924..2f5b2af 100644
--- a/cpp/Makefile
+++ b/cpp/Makefile
@@ -51,16 +51,19 @@ CXXFLAGS ?= -std=c++11 -O
 # ---- Targets to build ----
 
 LIB = qrcodegen
-LIBFILE = lib$(LIB).a
+ARFILE = lib$(LIB).a
+LIBFILE = lib$(LIB).so
+# Bump the soname number when the ABI changes and gets incompatible
+SO_NAME = $(LIBFILE).1
 LIBOBJ = BitBuffer.o QrCode.o QrSegment.o
 MAINS = QrCodeGeneratorDemo QrCodeGeneratorWorker
 
 # Build all binaries
-all: $(LIBFILE) $(MAINS)
+all: $(LIBFILE) $(ARFILE) $(MAINS)
 
 # Delete build output
 clean:
-	rm -f -- $(LIBOBJ) $(LIBFILE) $(MAINS:=.o) $(MAINS)
+	rm -f -- $(LIBOBJ) $(LIBFILE) $(ARFILE) $(MAINS:=.o) $(MAINS)
 	rm -rf .deps
 
 # Executable files
@@ -68,9 +71,12 @@ clean:
 	$(CXX) $(CXXFLAGS) -o $@ $< -L . -l $(LIB)
 
 # The library
-$(LIBFILE): $(LIBOBJ)
+$(ARFILE): $(LIBOBJ)
 	$(AR) -crs $@ -- $^
 
+$(LIBFILE): $(LIBOBJ)
+	$(CC) -shared -Wl,-soname,$(SO_NAME) $(LDFLAGS) -o $@ $^
+
 # Object files
 %.o: %.cpp .deps/timestamp
 	$(CXX) $(CXXFLAGS) -fPIC -c -o $@ -MMD -MF .deps/$*.d $<
-- 
2.24.0