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, see <http://www.gnu.org/licenses/>. 16 17# Author: Masatake YAMATO <yamato@redhat.com> 18# Technique used here is suggested by Ngie Cooper <yaneurabeya@gmail.com> 19 20# Usage: 21# 22# This makefile snippet is for writing test cases 23# for foo16 system calls. Here I assume you already have 24# test cases for foo like foo01, foo02.. fooN and I also 25# assume the source file name for fooN is fooN.c. 26# On the above assumption, this file does: 27# 28# * adding fooN_16 as MAKE_TARGETS, 29# * making *.c depend on compat_16.h if the header file exists, 30# * adding rules to build fooN_16 from fooN.c (and compat_16.h), and 31# * passing a cpp symbol TST_USE_COMPAT16_SYSCALL to 32# CC when building fooN_16. 33# 34# 35# You can use this file in following procedures: 36# 37# 1. write fooN.c. 38# 2. add the code for 16 bit syscall and wrap 39# it #ifdef TST_USE_COMPAT16_SYSCALL/endif. 40# 3. introduce your own compat_16.h if the ifdef 41# block is too large. 42# 4. don't forget putting compat_16.h in all fooN.c 43# if you introduced compat_16.h. 44# 5. include this file compat_16.mk in your Makefile. 45# 6. use `+=' instead of `=' as assignment operator for MAKE_TARGETS. 46# 7. Added extra definitions to CFLAGS in %_16 target if needed. 47# 48# See Makefile of setuid test case. 49# 50 51CPPFLAGS += -I$(abs_srcdir) -I$(abs_srcdir)/../utils 52 53SRCS ?= $(wildcard $(abs_srcdir)/*.c) 54 55MAKE_TARGETS := $(notdir $(patsubst %.c,%,$(SRCS))) 56MAKE_TARGETS_OBJS_WO_COMPAT_16 := $(addsuffix .o,$(MAKE_TARGETS)) 57MAKE_TARGETS += $(addsuffix _16,$(MAKE_TARGETS)) 58 59# XXX (garrcoop): This code should be put in question as it cannot be applied 60# (no .h file, no TST_USE_NEWER64_SYSCALL def). 61DEF_16 := TST_USE_COMPAT16_SYSCALL 62 63ifneq ($(COMPAT_TST_16_H),1) 64COMPAT_16_H := $(abs_srcdir)/../utils/compat_16.h 65else 66COMPAT_16_H := $(abs_srcdir)/../utils/compat_tst_16.h 67endif 68 69ifneq ($(wildcard $(COMPAT_16_H)),) 70$(MAKE_TARGETS_OBJS_WO_COMPAT_16): $(COMPAT_16_H) 71.INTERMEDIATE: $(MAKE_TARGETS_OBJS_WO_COMPAT_16) 72endif 73 74%_16: CPPFLAGS += -D$(DEF_16)=1 75# XXX (garrcoop): End section of code in question.. 76 77%_16.o: %.c $(COMPAT_16_H) 78 $(COMPILE.c) $(OUTPUT_OPTION) $< 79