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1 #
2 # hdw-linux Config script
3 #
4 # author: hackbard@hackdaworld.org
5 #
6 # script initializing environment
7
8
9 stage=""
10
11 while [ "$1" ] ; do
12         case "$1" in
13                 -stage)         stage="$2"              ; shift 2 ;;
14                 *)              echo 
15                                 echo "Usage:"
16                                 echo
17                                 echo " ./scripts/Config -stage <stagelevel>"
18                                 echo
19                                 shift 1 ; exit 1 ;;
20         esac
21 done
22
23 if [ -z "$stage" ]; then
24         echo "something went wrong, no stage specified."
25         exit 1
26 fi
27
28 # execute  Config file & create symlink to doc/README + doc/BUILD
29 if [ -f ./Config ] ; then
30         hdw_home_dir=`pwd`
31         echo "setting hdw_home_dir to $hdw_home_dir"
32         echo "reading ./Config file"
33         . ./Config
34         [ ! -s ./README ] && ln -s ./doc/README .
35         [ ! -s ./BUILD ] && ln -s ./doc/BUILD .
36         [ ! -s ./INSTALL ] && ln -s ./doc/INSTALL .
37         [ ! -s ./License ] && ln -s ./doc/License .
38 else
39         echo "./Config file not found. are you in correct directory?"
40         exit 1
41 fi
42
43 # define the toolchain name, default: "toolchain"
44 [ -z "$hdw_tc_name" ] && hdw_tc_name="toolchain"
45
46 # lets see what root is:
47 root=""
48 if [ "$hdw_crossbuild" != "0" -o "$stage" -lt "2" ] ; then
49         # check for properly configured build directory
50         if [ -z "$hdw_build_dir" ] ; then
51                 echo "please set hdw_build_dir in ./Config!"
52                 exit 1
53         elif [ ! -d $hdw_build_dir ] ; then
54                 echo "please set _existing_ hdw_build_dir in ./Config"
55                 exit 1
56         else
57                 echo "hdw_build_dir variable set to $hdw_build_dir"
58                 root="$hdw_build_dir"
59         fi
60 fi
61
62 # setting up general environment, now that we know $root
63 set +h
64 umask 022
65 export LC_ALL=POSIX
66 [ "$stage" -lt "2" -o "$hdw_crossbuild" != "0" ] && \
67         export PATH="$root/${hdw_tc_name}/bin:$PATH"
68
69 # let's do optimization and care for crossbuilds
70 #
71 # as gnu autoconf terminology has been confusing me again and again,
72 # there are a few comments following ;)
73 #
74 # ref: gcc docs - hardware models and configurations
75 #      @ http://gcc.gnu.org/onlinedocs/
76 #
77
78 # --build: the system the actual executable is created on. uname will tell us.
79 #          you may set hdw_real_build, or
80 #          you may fake uname output using fake_utsname kernel module!
81 if [ -n "`uname --version | grep sh-utils`" ] ; then
82         hdw_arch_build="`uname -m -p | tr " " -`-linux-gnu"
83 else
84         hdw_arch_build="`uname -m`-unknown-linux-gnu"
85 fi
86 [ -n "$hdw_real_build" ] && hdw_arch_build="${hdw_real_build}-unknown-linux-gnu"
87
88 # --target: the system for which the executable is going to produce code.
89 case "$hdw_arch" in
90         ia32)   if [ -z "$hdw_arch_opt" ] ; then
91                         hdw_arch_target="i386-pc-linux-gnu"
92                 else
93                         hdw_arch_target="${hdw_arch_opt}-pc-linux-gnu"
94                         hdw_cflags="-march=${hdw_arch_opt}"
95                 fi
96                 hdw_arch_build=${hdw_arch_build//unknown/pc} ;;
97         sparc*) if [ -z "$hdw_arch_opt" ] ; then
98                         hdw_arch_target="$hdw_arch-unknown-linux-gnu"
99                 else
100                         hdw_arch_target="$hdw_arch-unknown-linux-gnu"
101                         hdw_cflags="-march={hdw_arch_opt}"
102                 fi ;;
103         ppc)
104                 hdw_arch_target="powerpc-unknown-linux-gnu"
105                 if [ -z "$hdw_arch_opt" ] ; then
106                         hdw_cflags="-mcpu=common"
107                 else
108                         hdw_cflags="-mcpu=${hdw_arch_opt}"
109                 fi
110                 hdw_arch_build=${hdw_arch_build//ppc/powerpc} ;;
111         ppc64)
112                 hdw_arch_target="powerpc64-unknown-linux-gnu"
113                 if [ -z "$hdw_arch_opt" ] ; then
114                         hdw_cflags="-mcpu=common"
115                 else
116                         hdw_cflags="-mcpu=${hdw_arch_opt}"
117                 fi
118                 hdw_arch_build=${hdw_arch_build//ppc64/powerpc64} ;;
119         mips)   hdw_arch_target="mips-unknown-linux-gnu"
120                 if [ -z "$hdw_arch_opt" ] ; then
121                         echo "info: no optimization set"
122                 else
123                         hdw_cflags="-march=${hdw_arch_opt}"
124                 fi ;;
125         *)      echo "$hdw_arch_target not supported yet"
126                 echo "please choose a valid optimization and build platform."
127                 exit 1 ;;
128 esac
129
130 # --host: system where the created executable runs on.
131 hdw_arch_host=${hdw_arch_build}
132 [ "$stage" != "0" -a "$hdw_crossbuild" = "0" ] && \
133         hdw_arch_host=${hdw_arch_target}
134
135 # -O flag
136 # optimization only at stages >= 1
137 if [ -n "$hdw_opt" -a "$stage" != "0" ] ; then
138         hdw_cflags="-O${hdw_opt} $hdw_cflags"
139 else
140         unset hdw_cflags
141 fi
142
143 # build tools to use
144 hdw_arch_prefix=""
145 [ "$stage" != "0" ] && hdw_arch_prefix="$hdw_arch_target-"
146
147 # print decissions for debugging ...
148 echo "root variable set to '$root'"
149 echo "hdw_arch_target variable set to $hdw_arch_target"
150 echo "hdw_arch_build variable set to $hdw_arch_build"
151 echo "hdw_arch_host variable set to $hdw_arch_host"
152 echo "hdw_arch_prefix variable set to '$hdw_arch_prefix'"
153 echo "hdw_cflags variable set to '$hdw_cflags'"
154 echo "hdw_tc_name set to '$hdw_tc_name'"
155
156 # lets see what we are going to build
157 if [ -z $hdw_target ] ; then 
158         echo "please set hdw_target in ./Config!"
159         exit 1
160 elif [ ! -d ./targets/$hdw_target ] ; then 
161         echo "please set _existing_ hdw_target in ./Config!"
162         exit 1
163 else
164         echo "hdw_target variable set to $hdw_target"
165 fi
166