Add a proper build system.

Makefile

@@ -1,47 +1,3 @@
-LIB = objopenssl
-LIB_MAJOR = 0
-LIB_MINOR = 0
+SUBDIRS = src
 
-CPPFLAGS += -Wall -g
-LIBS += -lssl -lcrypto -lz
-
-includedir = ObjOpenSSL
-prefix ?= /usr/local
-INSTALL ?= install
-OBJFW_CONFIG ?= objfw-config
-OBJFW_COMPILE ?= objfw-compile
-
-LIB_PREFIX = `${OBJFW_CONFIG} --lib-prefix`
-LIB_SUFFIX = `${OBJFW_CONFIG} --lib-suffix`
-LIB_FILE = ${LIB_PREFIX}${LIB}${LIB_SUFFIX}
-
-.SILENT:
-
-all:
-	${OBJFW_COMPILE} --lib ${LIB_MAJOR}.${LIB_MINOR} ${CPPFLAGS} ${LIBS} \
-		-o ${LIB} -Wno-deprecated-declarations src/*.m
-
-install: install-lib install-headers
-
-install-lib: all
-	mkdir -p ${destdir}${prefix}/lib
-	export LIB_MAJOR=${LIB_MAJOR}; \
-	export LIB_MINOR=${LIB_MINOR}; \
-	echo "Installing ${LIB_FILE}..."; \
-	${INSTALL} -m 755 ${LIB_FILE} ${destdir}${prefix}/lib/${LIB_FILE}
-
-install-headers:
-	mkdir -p ${destdir}${prefix}/include/${includedir}
-	cd src && for i in *.h; do \
-		echo "Installing $$i..."; \
-		install -m 644 $$i \
-			${destdir}${prefix}/include/${includedir}/$$i; \
-	done
-
-clean:
-	export LIB_MAJOR=${LIB_MAJOR}; \
-	export LIB_MINOR=${LIB_MINOR}; \
-	for i in src/*.o ${LIB_FILE}; do \
-		echo "Deleting $$i..."; \
-		rm -f $$i; \
-	done
+include buildsys.mk