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 (at] redhat.com> 20 # Technique used here is suggested by Ngie Cooper <yaneurabeya (at] 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 53 CPPFLAGS += -I$(abs_srcdir) -I$(abs_srcdir)/../utils 54 55 SRCS ?= $(wildcard $(abs_srcdir)/*.c) 56 57 MAKE_TARGETS := $(notdir $(patsubst %.c,%,$(SRCS))) 58 MAKE_TARGETS_OBJS_WO_COMPAT_16 := $(addsuffix .o,$(MAKE_TARGETS)) 59 60 ifneq ($(TST_COMPAT_16_SYSCALL),no) 61 MAKE_TARGETS += $(addsuffix _16,$(MAKE_TARGETS)) 62 endif 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). 66 DEF_16 := TST_USE_COMPAT16_SYSCALL 67 68 COMPAT_16_H := $(abs_srcdir)/../utils/compat_16.h 69 70 ifneq ($(wildcard $(COMPAT_16_H)),) 71 HAS_COMPAT_16 := 1 72 73 $(MAKE_TARGETS_OBJS_WO_COMPAT_16): $(COMPAT_16_H) 74 .INTERMEDIATE: $(MAKE_TARGETS_OBJS_WO_COMPAT_16) 75 76 else 77 HAS_COMPAT_16 := 0 78 endif 79 80 %_16: CPPFLAGS += -D$(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
