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b731048b | 1 | # configure.host |
2c839a4e | 2 | # |
b731048b BK |
3 | # This shell script handles all host based configuration for libstdc++. |
4 | # It sets various shell variables based on the the host and the | |
2c839a4e PE |
5 | # configuration options. You can modify this shell script without needing |
6 | # to rerun autoconf/aclocal/etc. This file is "sourced" not executed. | |
7 | # | |
8 | # You should read docs/html/17_intro/porting.* to make sense of this file. | |
9 | # | |
10 | # | |
11 | # It uses the following shell variables as set by config.guess: | |
b731048b BK |
12 | # host The configuration host (full CPU-vendor-OS triplet) |
13 | # host_cpu The configuration host CPU | |
14 | # host_os The configuration host OS | |
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15 | # |
16 | # | |
17 | # It sets the following shell variables: | |
18 | # | |
19 | # cpu_include_dir CPU-specific directory, defaults to cpu/generic | |
7d3998a4 PE |
20 | # if cpu/host_cpu doesn't exist. This is not used |
21 | # directly, but sets the default for others. | |
2c839a4e PE |
22 | # |
23 | # os_include_dir OS-specific directory, defaults to os/generic. | |
24 | # | |
ef16a298 | 25 | # c_model the "C" header model, defaults to c_std. |
e01c9849 | 26 | # |
17640f24 | 27 | # c_compatibility if "C" compatibility headers are necessary, |
ef16a298 | 28 | # defaults to no. |
2c839a4e | 29 | # |
ef16a298 BK |
30 | # abi_baseline_pair directory name for ABI compat testing, |
31 | # defaults to host_cpu-host_os (as per config.guess) | |
314b5a68 | 32 | # |
7d3998a4 PE |
33 | # abi_tweaks_dir location of cxxabi_tweaks.h, |
34 | # defaults to cpu_include_dir | |
35 | # | |
2c5d0ae8 | 36 | # atomicity_dir location of atomicity.h, |
ef16a298 | 37 | # defaults to cpu_include_dir |
ca017eef | 38 | # |
2c5d0ae8 BK |
39 | # atomic_word_dir location of atomic_word.h |
40 | # defaults to generic. | |
41 | # | |
4b90c838 PC |
42 | # cpu_defines_dir location of cpu_defines.h |
43 | # defaults to generic. | |
44 | # | |
2c839a4e PE |
45 | # It possibly modifies the following variables: |
46 | # | |
47 | # OPT_LDFLAGS extra flags to pass when linking the library, of | |
ef16a298 BK |
48 | # the form '-Wl,blah' |
49 | # (defaults to empty in acinclude.m4) | |
2c839a4e | 50 | # |
58579a27 | 51 | # port_specific_symbol_files |
e6b7a69a | 52 | # whitespace-seperated list of files containing |
ff66d28f PE |
53 | # additional symbols to export from the shared |
54 | # library, when symbol versioning is in use | |
e6b7a69a | 55 | # |
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56 | # |
57 | # If the defaults will not work for your platform, you need only change the | |
58 | # variables that won't work, i.e., you do not need to explicitly set a | |
b731048b | 59 | # working variable to its default. Most hosts only need to change the two |
2c839a4e | 60 | # *_include_dir variables. |
d0941a31 | 61 | |
d0941a31 | 62 | |
e01c9849 | 63 | # DEFAULTS |
2c839a4e PE |
64 | # Try to guess a default cpu_include_dir based on the name of the CPU. We |
65 | # cannot do this for os_include_dir; there are too many portable operating | |
66 | # systems out there. :-) | |
85ab9d23 BK |
67 | c_model=c_std |
68 | c_compatibility=no | |
2c5d0ae8 | 69 | atomic_word_dir=cpu/generic |
4b90c838 | 70 | cpu_defines_dir=cpu/generic |
2c839a4e | 71 | |
b731048b | 72 | # HOST-SPECIFIC OVERRIDES |
e01c9849 | 73 | # Set any CPU-dependent bits. |
2c839a4e | 74 | # Here we override defaults and catch more general cases due to naming |
17640f24 | 75 | # conventions (e.g., chip_name* to catch all variants). |
ef16a298 | 76 | |
d0941a31 | 77 | # THIS TABLE IS SORTED. KEEP IT THAT WAY. |
b731048b | 78 | case "${host_cpu}" in |
d0941a31 | 79 | alpha*) |
ef16a298 | 80 | try_cpu=alpha |
d0941a31 | 81 | ;; |
7d3998a4 PE |
82 | arm* | xscale | ep9312) |
83 | try_cpu=arm | |
84 | ;; | |
e6b7a69a | 85 | i[567]86 | x86_64) |
ef16a298 | 86 | try_cpu=i486 |
d0941a31 | 87 | ;; |
49dd74ef | 88 | hppa*) |
ef16a298 | 89 | try_cpu=hppa |
49dd74ef | 90 | ;; |
92d568f2 | 91 | mips*) |
ef16a298 BK |
92 | # NB: cpu/mips/atomicity.h needs MIPS II or above. |
93 | # Of course, there is no sane way to test for this, no ABI macro, | |
94 | # and no consistent host_cpu name differentiation. Therefore, only | |
95 | # use it where it is known to be safe, ie it runs linux (see below). | |
96 | try_cpu=generic | |
92d568f2 | 97 | ;; |
85ab9d23 | 98 | m680[246]0) |
ef16a298 | 99 | try_cpu=m68k |
2c839a4e | 100 | ;; |
bd11db39 | 101 | powerpc* | rs6000) |
ef16a298 | 102 | try_cpu=powerpc |
d0941a31 | 103 | ;; |
85ab9d23 | 104 | s390x) |
ef16a298 | 105 | try_cpu=s390 |
35495312 | 106 | ;; |
0fe707cc | 107 | sparc* | ultrasparc) |
ef16a298 BK |
108 | try_cpu=sparc |
109 | ;; | |
110 | *) | |
1568430f | 111 | if test -d ${glibcxx_srcdir}/config/cpu/${host_cpu}; then |
bbdfb3e8 MK |
112 | try_cpu=${host_cpu} |
113 | else | |
114 | try_cpu=generic | |
115 | fi | |
d0941a31 | 116 | ;; |
d0941a31 PE |
117 | esac |
118 | ||
2c5d0ae8 BK |
119 | # Set specific CPU overrides for atomic_word_dir. Most can just use generic. |
120 | # THIS TABLE IS SORTED. KEEP IT THAT WAY. | |
121 | case "${host_cpu}" in | |
122 | cris*) | |
123 | atomic_word_dir=cpu/cris | |
124 | ;; | |
125 | sparc* | ultrasparc) | |
126 | atomic_word_dir=cpu/sparc | |
127 | ;; | |
128 | esac | |
129 | ||
4b90c838 PC |
130 | # Set specific CPU overrides for cpu_defines_dir. Most can just use generic. |
131 | # THIS TABLE IS SORTED. KEEP IT THAT WAY. | |
132 | case "${host_cpu}" in | |
460d832b | 133 | powerpc* | rs6000) |
4b90c838 PC |
134 | cpu_defines_dir=cpu/powerpc |
135 | ;; | |
136 | esac | |
137 | ||
5ab481e0 BK |
138 | # Now look for the file(s) usually tied to a CPU model, and make |
139 | # default choices for those if they haven't been explicitly set | |
140 | # already. | |
7d3998a4 | 141 | cpu_include_dir=cpu/${try_cpu} |
ef16a298 | 142 | abi_baseline_pair=${try_cpu}-${host_os} |
7d3998a4 | 143 | unset try_cpu |
2c839a4e | 144 | |
7c499eeb PC |
145 | case "${host_cpu}" in |
146 | alpha* | ia64 | powerpc* | rs6000 | s390*) | |
147 | atomicity_dir="cpu/generic/atomic_builtins" | |
148 | ;; | |
149 | *) | |
150 | if test -f ${glibcxx_srcdir}/config/${cpu_include_dir}/atomicity.h ; then | |
151 | atomicity_dir=$cpu_include_dir | |
152 | else | |
153 | atomicity_dir="cpu/generic" | |
154 | fi | |
155 | ;; | |
156 | esac | |
1568430f PB |
157 | |
158 | if test -f ${glibcxx_srcdir}/config/${cpu_include_dir}/cxxabi_tweaks.h ; then | |
159 | abi_tweaks_dir=$cpu_include_dir | |
160 | else | |
161 | abi_tweaks_dir="cpu/generic" | |
162 | fi | |
2c839a4e | 163 | |
e01c9849 | 164 | # Set any OS-dependent bits. |
17640f24 | 165 | # Set the os_include_dir. |
e01c9849 BK |
166 | # Set c_model, c_compatibility here. |
167 | # If atomic ops and/or numeric limits are OS-specific rather than | |
168 | # CPU-specifc, set those here too. | |
d0941a31 | 169 | # THIS TABLE IS SORTED. KEEP IT THAT WAY. |
b731048b | 170 | case "${host_os}" in |
527b03ed | 171 | aix4.[3456789]* | aix[56789]*) |
2c839a4e | 172 | # We set os_include_dir to os/aix only on AIX 4.3 and newer, but |
d32e25df | 173 | # os/aix/atomicity.h works on earlier versions of AIX 4.*, so we |
2c839a4e PE |
174 | # explicitly duplicate the directory for 4.[<3]. |
175 | os_include_dir="os/aix" | |
2c5d0ae8 | 176 | atomicity_dir="os/aix" |
7afe555c | 177 | atomic_word_dir="os/aix" |
34e3a8d5 | 178 | OPT_LDFLAGS="-Wl,-G" |
d0941a31 | 179 | ;; |
2c839a4e | 180 | aix4.*) |
47395a24 | 181 | os_include_dir="os/generic" |
2c5d0ae8 | 182 | atomicity_dir="os/aix" |
7afe555c | 183 | atomic_word_dir="os/aix" |
2c839a4e PE |
184 | ;; |
185 | aix*) | |
47395a24 | 186 | os_include_dir="os/generic" |
2c5d0ae8 | 187 | atomicity_dir="cpu/generic" |
2c839a4e | 188 | ;; |
8478f170 LR |
189 | bsd*) |
190 | # Plain BSD attempts to share FreeBSD files. | |
2c839a4e | 191 | os_include_dir="os/bsd/freebsd" |
d0941a31 | 192 | ;; |
c383aafd | 193 | cygwin*) |
2c839a4e PE |
194 | os_include_dir="os/newlib" |
195 | ;; | |
ae59b55c | 196 | darwin | darwin[1-7] | darwin[1-7].*) |
f1a66265 | 197 | # On Darwin, performance is improved if libstdc++ is single-module. |
ae59b55c | 198 | # Up to at least 10.3.7, -flat_namespace is required for proper |
f1a66265 GK |
199 | # treatment of coalesced symbols. |
200 | OPT_LDFLAGS="${OPT_LDFLAGS} -Wl,-single_module -Wl,-flat_namespace" | |
f9686024 | 201 | os_include_dir="os/bsd/darwin" |
f1a66265 | 202 | ;; |
ae59b55c GK |
203 | darwin[89] | darwin[89].* | darwin[1-9][0-9]* ) |
204 | # On Darwin, performance is improved if libstdc++ is single-module, | |
205 | # and on 8+ compatibility is better if not -flat_namespace. | |
206 | OPT_LDFLAGS="${OPT_LDFLAGS} -Wl,-single_module" | |
207 | os_include_dir="os/bsd/darwin" | |
208 | ;; | |
2c839a4e PE |
209 | *djgpp*) # leading * picks up "msdosdjgpp" |
210 | os_include_dir="os/djgpp" | |
c383aafd | 211 | ;; |
8478f170 LR |
212 | freebsd*) |
213 | os_include_dir="os/bsd/freebsd" | |
8478f170 | 214 | ;; |
b938ad89 | 215 | gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu) |
464aea98 JM |
216 | if [ "$uclibc" = "yes" ]; then |
217 | os_include_dir="os/uclibc" | |
218 | else | |
219 | os_include_dir="os/gnu-linux" | |
220 | fi | |
6f87af20 | 221 | ;; |
2c839a4e PE |
222 | hpux*) |
223 | os_include_dir="os/hpux" | |
d0941a31 | 224 | ;; |
789b7de5 | 225 | irix[1-6] | irix[1-5].* | irix6.[0-4]*) |
2c839a4e PE |
226 | # This is known to work on at least IRIX 5.2 and 6.3. |
227 | os_include_dir="os/irix/irix5.2" | |
00d04db6 BK |
228 | atomicity_dir=os/irix |
229 | atomic_word_dir=os/irix | |
2c839a4e | 230 | ;; |
789b7de5 | 231 | irix6.5*) |
2c839a4e | 232 | os_include_dir="os/irix/irix6.5" |
00d04db6 BK |
233 | atomicity_dir=os/irix |
234 | atomic_word_dir=os/irix | |
d0941a31 | 235 | ;; |
944effb6 | 236 | mingw32*) |
2c839a4e | 237 | os_include_dir="os/mingw32" |
944effb6 | 238 | ;; |
11b176c1 | 239 | netbsd*) |
2c839a4e | 240 | os_include_dir="os/bsd/netbsd" |
11b176c1 | 241 | ;; |
ff66d28f PE |
242 | qnx6.[12]*) |
243 | os_include_dir="os/qnx/qnx6.1" | |
244 | c_model=c | |
245 | ;; | |
43892f8c BK |
246 | solaris2) |
247 | # This too-vague configuration does not provide enough information | |
248 | # to select a ctype include, and thus os_include_dir is a crap shoot. | |
249 | echo "Please specify the full version of Solaris, ie. solaris2.9 " 1>&2 | |
7d3998a4 | 250 | exit 1 |
43892f8c | 251 | ;; |
51ac684e | 252 | solaris2.5 | solaris2.5.[0-9]) |
2c839a4e | 253 | os_include_dir="os/solaris/solaris2.5" |
d0941a31 | 254 | ;; |
51ac684e | 255 | solaris2.6) |
2c839a4e | 256 | os_include_dir="os/solaris/solaris2.6" |
d0941a31 | 257 | ;; |
51ac684e | 258 | solaris2.[789] | solaris2.1[0-9]) |
2c839a4e | 259 | os_include_dir="os/solaris/solaris2.7" |
598730fe | 260 | ;; |
6e198ee0 UW |
261 | tpf) |
262 | os_include_dir="os/tpf" | |
263 | ;; | |
65fc9769 PE |
264 | vxworks) |
265 | os_include_dir="os/vxworks" | |
266 | ;; | |
522e3d22 | 267 | windiss*) |
2c839a4e | 268 | os_include_dir="os/windiss" |
522e3d22 | 269 | ;; |
d0941a31 | 270 | *) |
2c839a4e | 271 | os_include_dir="os/generic" |
d0941a31 PE |
272 | ;; |
273 | esac | |
274 | ||
275 | ||
e01c9849 | 276 | # Set any OS-dependent and CPU-dependent bits. |
d0941a31 | 277 | # THIS TABLE IS SORTED. KEEP IT THAT WAY. |
b731048b | 278 | case "${host}" in |
9eb6e1d3 LR |
279 | alpha*-*-freebsd5*) |
280 | abi_baseline_pair="alpha-freebsd5" | |
281 | ;; | |
23a62f7f MK |
282 | arm*-*-linux*) |
283 | abi_baseline_pair="arm-linux-gnu" | |
284 | ;; | |
5ab481e0 BK |
285 | i*86-*-freebsd4*) |
286 | abi_baseline_pair="i386-freebsd4" | |
287 | ;; | |
9eb6e1d3 LR |
288 | i*86-*-freebsd5*) |
289 | abi_baseline_pair="i386-freebsd5" | |
290 | ;; | |
23a62f7f MK |
291 | mips*-*-linux*) |
292 | atomicity_dir="cpu/mips" | |
293 | abi_baseline_pair="mips-linux-gnu" | |
a2fddff9 | 294 | cpu_include_dir="cpu/mips" |
23a62f7f | 295 | ;; |
f9314d01 GK |
296 | powerpc*-*-darwin*) |
297 | port_specific_symbol_files="\$(srcdir)/../config/os/bsd/darwin/ppc-extra.ver" | |
298 | ;; | |
3ff13f48 PC |
299 | powerpc64-*-linux*) |
300 | abi_baseline_pair="powerpc64-linux-gnu" | |
301 | ;; | |
29cb3c21 UW |
302 | s390-*-linux*) |
303 | abi_baseline_pair="s390-linux-gnu" | |
304 | ;; | |
305 | s390x-*-linux*) | |
306 | abi_baseline_pair="s390x-linux-gnu" | |
307 | ;; | |
9eb6e1d3 LR |
308 | sparc*-*-freebsd5*) |
309 | abi_baseline_pair="sparc-freebsd5" | |
310 | ;; | |
23a62f7f MK |
311 | x86_64-*-linux*) |
312 | abi_baseline_pair="x86_64-linux-gnu" | |
313 | ;; | |
6414587c | 314 | esac |