From f58400c634eea6f865db8486e7e174f67bb555ce Mon Sep 17 00:00:00 2001
From: Alessandro Iezzi <aiezzi@alessandroiezzi.it>
Date: Thu, 11 May 2023 17:25:52 +0200
Subject: Change the way how to build this library

---
 Makefile    | 49 ++++++++++++++++++++++++++++++++++++++++++++-----
 build-pc.sh | 56 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 config.mk   | 18 ++++++++++++++++++
 3 files changed, 118 insertions(+), 5 deletions(-)
 create mode 100755 build-pc.sh
 create mode 100644 config.mk

diff --git a/Makefile b/Makefile
index 3a8fc53..293ea93 100644
--- a/Makefile
+++ b/Makefile
@@ -1,10 +1,49 @@
 # See LICENSE file for copyright and license details.
 
-PREFIX=/usr/local
-INSTALL_DIR=${PREFIX}/include
+include config.mk
 
-install:
-	cp string2.h ${INSTALL_DIR}/string2.h
+all: dist tests
+
+dist: static shared
+	./build-pc.sh -p ${PREFIX} -n ${NAME} -ln ${LIBNAME} -d "${LIBDSCR}" -v ${LIBVER} ${PC_FILE}
+
+static:
+	@make OPT='-O2 -pipe -Werror' ${LIBNAME:=.a}
+	rm -f ${OBJ}
+
+shared:
+	@make OPT='-O2 -pipe -Werror -fPIC' ${LIBNAME:=.so}
+	rm -f ${OBJ}
+
+debug:
+	@make OPT=-g all
+
+${LIBNAME:=.so}: ${OBJ}
+	${CC} ${LDFLAGS} -shared ${OBJ} -o $@
+
+${LIBNAME:=.a}: ${OBJ}
+	ar rcs $@ ${OBJ}
+
+.c.o:
+	${CC} ${CFLAGS} -c $< -o $@
+
+clean:
+	rm -f ${OBJ} ${LIBNAME}.* *.core ${PC_FILE}
+	cd test && make clean
+
+tests: dist
+	@make -C test
+
+install: dist
+	mkdir -p ${PREFIX}/include
+	mkdir -p ${PREFIX}/lib
+	cp src/string2.h ${PREFIX}/include/string2.h
+	cp ${LIBNAME:=.so} ${PREFIX}/lib/${LIBNAME:=.so}
+	cp ${LIBNAME:=.a} ${PREFIX}/lib/${LIBNAME:=.a}
+	cp ${PC_FILE} ${PKG_CONFIG_PATH}/${PC_FILE}
 
 uninstall:
-	rm -f ${INSTALL_DIR}/string2.h
+	rm -f ${PREFIX}/include/string2.h
+	rm -f ${PREFIX}/lib/${LIBNAME:=.so}
+	rm -f ${PREFIX}/lib/${LIBNAME:=.a}
+	rm -f ${PKG_CONFIG_PATH}/${PC_FILE}
diff --git a/build-pc.sh b/build-pc.sh
new file mode 100755
index 0000000..eb7dca8
--- /dev/null
+++ b/build-pc.sh
@@ -0,0 +1,56 @@
+#!/bin/sh
+
+# See LICENSE file for copyright and license details.
+
+VERSION=0.0.1
+
+while [ $# -gt 0 ]
+do
+	case $1 in
+		-p|--prefix)
+			shift
+			PREFIX=$1
+		;;
+		-n|--name)
+			shift
+			NAME=$1
+		;;
+		-ln|--lib-name)
+			shift
+			LIBNAME=$1
+		;;
+		-d|--description)
+			shift
+			DESCR=$1
+		;;
+		-v|--version)
+			shift
+			VERSION=$1
+		;;
+		*)
+			TARGET=$1
+		;;
+	esac
+	shift
+done
+
+if [ -z $PREFIX ]; then
+	echo 'prefix must be set'
+	exit 1
+elif [ -z $NAME ]; then
+	echo 'name must be set'
+	exit 1
+fi
+
+cat <<EOF > $TARGET
+prefix=$PREFIX
+exec_prefix=\${prefix}
+includedir=\${prefix}/include
+libdir=\${exec_prefix}/lib
+
+Name: $NAME
+Description: $LIBNAME - $DESCR
+Version: $VERSION
+Cflags: -I\${includedir}
+Libs: -L\${libdir} -l$NAME
+EOF
diff --git a/config.mk b/config.mk
new file mode 100644
index 0000000..2ecd96c
--- /dev/null
+++ b/config.mk
@@ -0,0 +1,18 @@
+# See LICENSE file for copyright and license details.
+
+PREFIX = /usr/local
+
+CC   = cc
+SRC != find src -name "*.c"
+OBJ  = ${SRC:.c=.o}
+
+NAME    = str2
+LIBNAME = lib${NAME}
+LIBDSCR = String library (extension of the C standard string library)
+LIBVER  = 0.0.1
+
+PC_FILE = ${NAME}.pc
+
+CFLAGS  = -Wall --std=c99 -pedantic ${OPT} -DLIBVER=\"${LIBVER}\"
+
+PKG_CONFIG_PATH != pkg-config --variable pc_path pkg-config | sed -E "s|.*(/usr/local[^:]*)[:].*|\1|g"
-- 
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