1# 2# Copyright (c) Red Hat Inc., 2008 3# 4# This program is free software; you can redistribute it and/or modify 5# it under the terms of the GNU General Public License as published by 6# the Free Software Foundation; either version 2 of the License, or 7# (at your option) any later version. 8# 9# This program is distributed in the hope that it will be useful, 10# but WITHOUT ANY WARRANTY; without even the implied warranty of 11# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See 12# the GNU General Public License for more details. 13# 14# You should have received a copy of the GNU General Public License 15# along with this program; if not, write to the Free Software 16# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 17# 18 19# Author: Masatake YAMATO <yamato@redhat.com> 20# Technique used here is suggested by Ngie Cooper <yaneurabeya@gmail.com> 21 22# Usage: 23# 24# This makefile snippet is for writing test cases 25# for foo16 system calls. Here I assume you already have 26# test cases for foo like foo01, foo02.. fooN and I also 27# assume the source file name for fooN is fooN.c. 28# On the above assumption, this file does: 29# 30# * adding fooN_16 as MAKE_TARGETS, 31# * making *.c depend on compat_16.h if the header file exists, 32# * adding rules to build fooN_16 from fooN.c (and compat_16.h), and 33# * passing a cpp symbol TST_USE_COMPAT16_SYSCALL to 34# CC when building fooN_16. 35# 36# 37# You can use this file in following procedures: 38# 39# 1. write fooN.c. 40# 2. add the code for 16 bit syscall and wrap 41# it #ifdef TST_USE_COMPAT16_SYSCALL/endif. 42# 3. introduce your own compat_16.h if the ifdef 43# block is too large. 44# 4. don't forget putting compat_16.h in all fooN.c 45# if you introduced compat_16.h. 46# 5. include this file compat_16.mk in your Makefile. 47# 6. use `+=' instead of `=' as assignment operator for MAKE_TARGETS. 48# 7. Added extra definitions to CFLAGS in %_16 target if needed. 49# 50# See Makefile of setuid test case. 51# 52 53CPPFLAGS += -I$(abs_srcdir) -I$(abs_srcdir)/../utils 54 55SRCS ?= $(wildcard $(abs_srcdir)/*.c) 56 57MAKE_TARGETS := $(notdir $(patsubst %.c,%,$(SRCS))) 58MAKE_TARGETS_OBJS_WO_COMPAT_16 := $(addsuffix .o,$(MAKE_TARGETS)) 59 60ifneq ($(TST_COMPAT_16_SYSCALL),no) 61MAKE_TARGETS += $(addsuffix _16,$(MAKE_TARGETS)) 62endif 63 64# XXX (garrcoop): This code should be put in question as it cannot be applied 65# (no .h file, no TST_USE_NEWER64_SYSCALL def). 66DEF_16 := TST_USE_COMPAT16_SYSCALL 67 68COMPAT_16_H := $(abs_srcdir)/../utils/compat_16.h 69 70ifneq ($(wildcard $(COMPAT_16_H)),) 71HAS_COMPAT_16 := 1 72 73$(MAKE_TARGETS_OBJS_WO_COMPAT_16): $(COMPAT_16_H) 74.INTERMEDIATE: $(MAKE_TARGETS_OBJS_WO_COMPAT_16) 75 76else 77HAS_COMPAT_16 := 0 78endif 79 80%_16: CPPFLAGS += -D$(DEF_16)=1 81# XXX (garrcoop): End section of code in question.. 82 83%_16.o: %.c $(COMPAT_16_H) 84 $(COMPILE.c) $(OUTPUT_OPTION) $< 85