update to libpciacces 0.18.1 removes the autotools build system and add a simple make based one. The existing xenocara obj dir needs to be wiped before a make obj / make buildx

lib/libpciaccess/mk/.gitignore

@@ -0,0 +1,2 @@
+!Makefile
+!config.h

lib/libpciaccess/mk/Makefile

@@ -0,0 +1,47 @@
+# $OpenBSD: Makefile,v 1.1 2024/05/13 19:16:27 matthieu Exp $
+
+PACKAGE_VERSION = 0.18.1
+LIB = pciaccess
+
+TOP = ${.CURDIR}/..
+
+NOPROFILE =
+
+SRCS= \
+	common_bridge.c \
+	common_iterator.c \
+	common_init.c \
+	common_interface.c \
+	common_io.c \
+	common_capability.c \
+	common_device_name.c \
+	common_map.c \
+	openbsd_pci.c
+
+CPPFLAGS += \
+	-DHAVE_CONFIG_H \
+	-DPCIIDS_PATH=\"${X11BASE}/share\" \
+	-I$(TOP)/mk \
+	-I$(TOP)/src \
+	-I$(TOP)/include
+
+CFLAGS += -std=c99
+
+EXTRA_PKGCONFIG_SUBST= "-e s/@PCIACCESS_LIBS@//"
+PKGCONFIG = pciaccess.pc
+
+beforeinstall:
+	@cmp -s ${DESTDIR}${X11BASE}/include/pciaccess.h \
+		$(TOP)/include/pciaccess.h || \
+	echo "${INSTALL_DATA} $(TOP)/include/pciaccess.h \
+		${DESTDIR}${X11BASE}/include/pciaccess.h" && \
+	${INSTALL_DATA} $(TOP)/include/pciaccess.h \
+		${DESTDIR}${X11BASE}/include/pciaccess.h
+
+obj: _xenocara_obj
+
+.PATH: $(TOP)
+.PATH: $(TOP)/src
+
+.include <bsd.lib.mk>
+.include <bsd.xorg.mk>

lib/libpciaccess/mk/config.h

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+/* $OpenBSD: config.h,v 1.1 2024/05/13 19:16:27 matthieu Exp $ */
+
+#pragma once
+
+#define HAVE_ERR_H 1
+#define HAVE_INTTYPES_H 1
+#define HAVE_STDINT_H 1
+#define HAVE_STRINGS_H 1
+#define HAVE_STRING_H 1
+/* undef HAVE_ZLIB */

lib/libpciaccess/mk/shlib_version

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+major=2
+minor=1
+