Mercurial > hg > xemacs-beta
annotate aclocal.m4 @ 5939:96fb76dd98df cygwin
fix bad interaction with Cygwin 3.3
| author | Henry Thompson <ht@markup.co.uk> |
|---|---|
| date | Wed, 08 Dec 2021 18:49:22 +0000 |
| parents | 4dee0387b9de |
| children |
| rev | line source |
|---|---|
| 265 | 1 dnl aclocal.m4 --- Dynamically linked library support for XEmacs |
| 388 | 2 dnl Copyright (C) 1998, 1999 J. Kean Johnston. |
| 3 dnl Author: J. Kean Johnston <jkj@sco.com>, based on work in libtool. | |
| 4 dnl This file is part of XEmacs. | |
|
5290
e6508b64ee08
More permission consistency.
Stephen J. Turnbull <stephen@xemacs.org>
parents:
4932
diff
changeset
|
5 dnl |
|
5410
ff554e6a2d29
Convert aclocal.m4 to GPLv3 as it was GPLv2 by the author.
Mats Lidell <matsl@xemacs.org>
parents:
4932
diff
changeset
|
6 dnl XEmacs is free software: you can redistribute it and/or modify it |
|
ff554e6a2d29
Convert aclocal.m4 to GPLv3 as it was GPLv2 by the author.
Mats Lidell <matsl@xemacs.org>
parents:
4932
diff
changeset
|
7 dnl under the terms of the GNU General Public License as published by the |
|
ff554e6a2d29
Convert aclocal.m4 to GPLv3 as it was GPLv2 by the author.
Mats Lidell <matsl@xemacs.org>
parents:
4932
diff
changeset
|
8 dnl Free Software Foundation, either version 3 of the License, or (at your |
|
ff554e6a2d29
Convert aclocal.m4 to GPLv3 as it was GPLv2 by the author.
Mats Lidell <matsl@xemacs.org>
parents:
4932
diff
changeset
|
9 dnl option) any later version. |
|
5290
e6508b64ee08
More permission consistency.
Stephen J. Turnbull <stephen@xemacs.org>
parents:
4932
diff
changeset
|
10 dnl |
|
5410
ff554e6a2d29
Convert aclocal.m4 to GPLv3 as it was GPLv2 by the author.
Mats Lidell <matsl@xemacs.org>
parents:
4932
diff
changeset
|
11 dnl XEmacs is distributed in the hope that it will be useful, but WITHOUT |
|
ff554e6a2d29
Convert aclocal.m4 to GPLv3 as it was GPLv2 by the author.
Mats Lidell <matsl@xemacs.org>
parents:
4932
diff
changeset
|
12 dnl ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
|
ff554e6a2d29
Convert aclocal.m4 to GPLv3 as it was GPLv2 by the author.
Mats Lidell <matsl@xemacs.org>
parents:
4932
diff
changeset
|
13 dnl FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
|
ff554e6a2d29
Convert aclocal.m4 to GPLv3 as it was GPLv2 by the author.
Mats Lidell <matsl@xemacs.org>
parents:
4932
diff
changeset
|
14 dnl for more details. |
|
5290
e6508b64ee08
More permission consistency.
Stephen J. Turnbull <stephen@xemacs.org>
parents:
4932
diff
changeset
|
15 dnl |
|
e6508b64ee08
More permission consistency.
Stephen J. Turnbull <stephen@xemacs.org>
parents:
4932
diff
changeset
|
16 dnl You should have received a copy of the GNU General Public License |
|
5410
ff554e6a2d29
Convert aclocal.m4 to GPLv3 as it was GPLv2 by the author.
Mats Lidell <matsl@xemacs.org>
parents:
4932
diff
changeset
|
17 dnl along with XEmacs. If not, see <http://www.gnu.org/licenses/>. |
| 388 | 18 dnl |
| 19 dnl There are several things we care about here. First, we need to find | |
| 20 dnl out how we create an executable that has its symbols exported, so | |
| 21 dnl that dynamically loaded modules have access to the internal XEmacs | |
| 22 dnl symbols. This is stored in ``ld_dynamic_link_flags'' and is used | |
| 23 dnl in the main Makefile. | |
| 24 dnl Next, we need to know how we compile actual shared libraries, and | |
| 25 dnl the objects in them. For these purposes, we need to determine the | |
| 26 dnl C compiler flags used to produce shared objects (``dll_cflags''), | |
| 27 dnl what linker to use to create the final shared object that will be | |
| 28 dnl loaded (``dll_ld'') and the flags to pass to that linker | |
| 29 dnl (``dll_ldflags''). This information is used by ellcc to build up | |
| 30 dnl the command line when compiling modules. We build up two other commands | |
| 31 dnl for extremely weird systems where special things need to be done. | |
| 32 dnl The first is ``dll_ldo'', which is the flag used to specify the output | |
| 33 dnl file name, and the second is ``dll_post'' which is inserted after the | |
| 34 dnl list of objects. | |
| 35 dnl After all of this, we should be able to: | |
| 36 dnl $(CC) $(CFLAGS) $(dll_cflags) -c module.c | |
| 37 dnl to produce a single shared object | |
| 38 dnl And then: | |
| 39 dnl $(dll_ld) $(dll_ldflags) $(dll_ldo) module.ell module.o $(dll_post) | |
| 40 dnl to create the loadable shared library. | |
| 41 dnl | |
| 42 dnl NOTE: In the code below, where I have modified things to work with | |
| 43 dnl XEmacs, we use $canonical instead of libtool's $host, and we use | |
| 44 dnl $internal_configuration instead of $host_alias. To make typing | |
| 45 dnl shorter we assign these to $xehost and $xealias | |
| 46 | |
| 47 AC_DEFUN(XE_SHLIB_STUFF,[ | |
| 48 dll_ld= | |
| 49 dll_ldflags= | |
| 50 dll_cflags= | |
| 51 dll_post= | |
| 52 dll_ldo="-o" | |
| 53 ld_dynamic_link_flags= | |
| 2651 | 54 xehost=$ac_cv_build |
| 55 xealias=$ac_cv_build_alias | |
| 388 | 56 |
| 3312 | 57 AC_MSG_CHECKING([how to build dynamic libraries for ${xehost}]) |
| 58 AC_MSG_RESULT() | |
| 388 | 59 # Transform *-*-linux* to *-*-linux-gnu*, to support old configure scripts. |
| 60 case "$xehost" in | |
| 61 *-*-linux-gnu*) ;; | |
| 62 *-*-linux*) xehost=`echo $xehost | sed 's/^\(.*-.*-linux\)\(.*\)$/\1-gnu\2/'` | |
| 63 esac | |
| 64 | |
| 2651 | 65 xehost_cpu=`echo $xehost | sed 's/^\([[^-]]*\)-\([[^-]]*\)-\(.*\)$/\1/'` |
| 66 xehost_vendor=`echo $xehost | sed 's/^\([[^-]]*\)-\([[^-]]*\)-\(.*\)$/\2/'` | |
| 67 xehost_os=`echo $xehost | sed 's/^\([[^-]]*\)-\([[^-]]*\)-\(.*\)$/\3/'` | |
| 388 | 68 |
| 69 # Now see if the compiler is really GCC. | |
| 70 if test "$GCC" = "yes"; then | |
| 71 XEGCC=yes | |
| 72 else | |
| 2651 | 73 AC_MSG_CHECKING([whether we are using GNU C]) |
| 388 | 74 AC_EGREP_CPP(yes,[ |
| 75 #ifdef __GNUC__ | |
| 76 yes; | |
| 77 #endif | |
| 78 ],XEGCC=yes, XEGCC=no) | |
| 79 AC_MSG_RESULT([${XEGCC}]) | |
| 80 fi | |
| 81 | |
| 2651 | 82 AC_MSG_CHECKING([how to produce PIC code]) |
| 388 | 83 wl= |
| 84 | |
| 85 can_build_shared=yes | |
| 1756 | 86 if test "$XEGCC" = yes -o "$__ICC" = yes; then |
| 388 | 87 wl='-Wl,' |
| 88 | |
| 89 case "$xehost_os" in | |
|
4759
aa5ed11f473b
Remove support for obsolete systems. See xemacs-patches message with ID
Jerry James <james@xemacs.org>
parents:
3773
diff
changeset
|
90 aix[[4-9]]* | irix[[5-9]]* | osf[[3-9]]) |
| 388 | 91 # PIC is the default for these OSes. |
| 92 ;; | |
| 93 | |
| 1678 | 94 *darwin*) dll_cflags='-dynamic' |
| 95 ;; | |
| 96 | |
| 460 | 97 os2*) |
| 388 | 98 # We can build DLLs from non-PIC. |
| 99 ;; | |
| 100 amigaos*) | |
| 101 # FIXME: we need at least 68020 code to build shared libraries, but | |
| 102 # adding the `-m68020' flag to GCC prevents building anything better, | |
| 103 # like `-m68040'. | |
| 104 dll_cflags='-m68020 -resident32 -malways-restore-a4' | |
| 105 ;; | |
| 442 | 106 *cygwin* | *mingw* ) |
| 107 # PIC is the default | |
| 108 ;; | |
| 388 | 109 *) |
| 110 dll_cflags='-fPIC' | |
| 111 ;; | |
| 112 esac | |
| 113 else | |
| 114 # PORTME Check for PIC flags for the system compiler. | |
| 115 case "$xehost_os" in | |
|
4759
aa5ed11f473b
Remove support for obsolete systems. See xemacs-patches message with ID
Jerry James <james@xemacs.org>
parents:
3773
diff
changeset
|
116 hpux1[[0-9]]*) |
| 388 | 117 # Is there a better link_static_flag that works with the bundled CC? |
| 118 wl='-Wl,' | |
| 119 dll_cflags='+Z' | |
| 120 ;; | |
| 121 | |
| 460 | 122 irix[[5-9]]*) |
| 388 | 123 wl='-Wl,' |
| 124 # PIC (with -KPIC) is the default. | |
| 125 ;; | |
| 126 | |
| 127 os2*) | |
| 128 # We can build DLLs from non-PIC. | |
| 129 ;; | |
| 130 | |
| 460 | 131 osf[[3-9]]*) |
| 388 | 132 # All OSF/1 code is PIC. |
| 133 wl='-Wl,' | |
| 134 ;; | |
| 135 | |
|
4759
aa5ed11f473b
Remove support for obsolete systems. See xemacs-patches message with ID
Jerry James <james@xemacs.org>
parents:
3773
diff
changeset
|
136 aix[[4-9]]*) |
| 460 | 137 # All AIX code is PIC. |
| 138 wl='-Wl,' | |
| 139 ;; | |
| 140 | |
| 388 | 141 sco3.2v5*) |
| 142 dll_cflags='-belf -Kpic' | |
| 143 wl='-Wl,' | |
| 144 ;; | |
| 265 | 145 |
| 388 | 146 unixware*) |
| 147 dll_cflags="-KPIC" | |
| 148 wl="-Wl," | |
| 149 ;; | |
| 150 | |
| 151 sysv4*) | |
| 152 dll_cflags="-KPIC" | |
| 153 wl="-Wl," | |
| 154 ;; | |
| 155 | |
| 156 sysv5*) | |
| 157 dll_cflags="-KPIC" | |
| 158 wl="-Wl," | |
| 159 ;; | |
| 160 | |
| 161 solaris2*) | |
| 162 dll_cflags='-KPIC' | |
| 163 wl='-Wl,' | |
| 164 ;; | |
| 165 | |
| 166 uts4*) | |
| 167 dll_cflags='-pic' | |
| 168 ;; | |
| 169 | |
| 170 *) | |
| 171 can_build_shared=no | |
| 172 ;; | |
| 173 esac | |
| 174 fi | |
| 175 | |
| 176 if test -n "$dll_cflags"; then | |
| 177 AC_MSG_RESULT([${dll_cflags}]) | |
| 442 | 178 |
| 388 | 179 # Check to make sure the dll_cflags actually works. |
| 180 AC_MSG_CHECKING([if PIC flag ${dll_cflags} really works]) | |
| 181 save_CFLAGS="$CFLAGS" | |
| 182 CFLAGS="$CFLAGS $dll_cflags -DPIC" | |
| 3312 | 183 AC_COMPILE_IFELSE([AC_LANG_SOURCE([int x=0;])],[ |
| 388 | 184 # On HP-UX, the stripped-down bundled CC doesn't accept +Z, but also |
| 185 # reports no error. So, we need to grep stderr for (Bundled). | |
| 186 if grep '(Bundled)' config.log >/dev/null; then | |
| 187 AC_MSG_RESULT(no) | |
| 188 can_build_shared=no | |
| 189 dll_cflags= | |
| 190 else | |
| 191 AC_MSG_RESULT(yes) | |
| 192 fi], [AC_MSG_RESULT(no) | |
| 193 can_build_shared=no | |
| 194 dll_cflags=]) | |
| 195 CFLAGS="$save_CFLAGS" | |
| 196 else | |
| 197 AC_MSG_RESULT(none) | |
| 198 fi | |
| 199 | |
| 200 dnl | |
| 201 dnl Now comes the LD trickery. We do things differently to libtool here. | |
| 202 dnl I believe that libtool is incorrect in trying to drive the linker | |
| 203 dnl directly. This can cause considerable problems if the module you are | |
| 204 dnl compiling has C++ or other static initializers. If we use ld directly, | |
| 442 | 205 dnl we don't end up with the crt stuff being linked in, and we don't end up |
| 388 | 206 dnl with any .init or .fini sections (or the moral equivalent thereof). |
| 442 | 207 dnl gcc takes great care to do this properly when invoked in -shared |
| 208 dnl mode, and we really do want this behavior. Perhaps the libtool folks | |
| 388 | 209 dnl are not aware that any SVR4 based dynamic loader will automatically |
| 210 dnl execute code in the .init section before dlopen() returns. This is | |
| 442 | 211 dnl vital, as the module may have been compiled to rely on that behavior. |
| 388 | 212 dnl |
| 213 dnl So, having said all of that, we diverge from libtool significantly | |
| 214 dnl here. We want to try and use the C compiler as much as possible. Only | |
| 2079 | 215 dnl if the C compiler itself cannot create shared libraries do we try to |
| 388 | 216 dnl find the linker. |
| 217 dnl | |
|
5384
3889ef128488
Fix misspelled words, and some grammar, across the entire source tree.
Jerry James <james@xemacs.org>
parents:
5290
diff
changeset
|
218 dnl The other advantage to my scheme is that it removes the dependency |
| 388 | 219 dnl on a given compiler version remaining static with relation to the |
| 220 dnl version of XEmacs. With the libtool way, it picks up the linker that | |
| 221 dnl gcc uses, which can be the internal collect2 that comes with gcc. | |
| 222 dnl If the user ever changes their compiler version, the paths will no | |
| 223 dnl longer be correct, and ellcc will break. This is clearly unacceptable. | |
| 442 | 224 dnl By using the compiler driver on the path, we don't have this problem. |
| 388 | 225 dnl If that is not clear, consider that gcc -print-prog-name=ld can |
| 226 dnl produce something along the lines of: | |
| 227 dnl /usr/local/lib/gcc-lib/OS-NAME/GCC-VERSION/ld | |
| 228 dnl If you ever change GCC versions, then that path no longer exists. | |
| 229 dnl | |
| 230 dnl So, we change the check order here. We first check to see if we are | |
| 231 dnl using GCC, and if so, we see if -shared works. If it does, great. | |
| 232 dnl If we are not using gcc, but the system C compiler can produce | |
| 233 dnl shared objects, we try that. Only if all of that fails do we revert | |
| 234 dnl back to the libtool ld trickery. | |
| 235 dnl | |
| 442 | 236 dnl We don't do ANY of this if we can't produce shared objects. |
| 388 | 237 dnl |
| 238 if test "$can_build_shared" = "yes"; then | |
| 239 cc_produces_so=no | |
| 240 xldf= | |
| 241 xcldf= | |
| 2651 | 242 AC_MSG_CHECKING([if C compiler can produce shared libraries]) |
| 1756 | 243 if test "$XEGCC" = yes -o "$__ICC" = yes; then |
| 1678 | 244 case "$xehost_os" in |
| 245 *darwin*) | |
| 246 xcldf='-bundle' | |
| 247 xldf='-bundle -bundle_loader ../../src/xemacs' | |
| 248 ;; | |
| 249 *) | |
| 250 xcldf="-shared" | |
| 251 xldf="-shared" | |
| 252 ;; | |
| 253 esac | |
| 388 | 254 else # Not using GCC |
| 255 case "$xehost_os" in | |
|
4759
aa5ed11f473b
Remove support for obsolete systems. See xemacs-patches message with ID
Jerry James <james@xemacs.org>
parents:
3773
diff
changeset
|
256 aix[[4-9]]*) |
| 388 | 257 xldf="-bE:ELLSONAME.exp -H512 -T512 -bhalt:4 -bM:SRE -bnoentry -lc" |
| 258 xcldf="${wl}-bE:ELLSONAME.exp ${wl}-H512 ${wl}-T512 ${wl}-bhalt:4 ${wl}-bM:SRE ${wl}-bnoentry ${wl}-lc" | |
| 259 ;; | |
| 260 | |
| 261 freebsd2* | netbsd* | openbsd*) | |
| 262 xldf="-Bshareable" | |
| 263 xcldf="${wl}-Bshareable" | |
| 264 ;; | |
| 265 | |
| 266 freebsd3*) | |
| 267 xcldf="-shared" | |
| 268 ;; | |
| 269 | |
| 270 hpux*) | |
| 271 xldf="-b +s" | |
| 272 xcldf="${wl}-b ${wl}+s" | |
| 273 ;; | |
| 274 | |
| 460 | 275 irix[[5-9]]* | osf[[3-9]]*) |
| 388 | 276 xcldf="${wl}-shared" |
| 277 xldf="-shared" | |
| 278 ;; | |
| 279 | |
| 280 sco3.2v5* | unixware* | sysv5* | sysv4* | solaris2* | solaris7* | uts4*) | |
| 281 xcldf="-G" | |
| 282 xldf="-G" | |
| 283 ;; | |
| 284 esac | |
| 285 fi # End if if we are using gcc | |
| 265 | 286 |
| 388 | 287 if test -n "$xcldf"; then |
| 288 save_LDFLAGS=$LDFLAGS | |
| 289 save_LIBS=$LIBS | |
| 290 save_xe_libs=$xe_libs | |
| 291 LDFLAGS="$xcldf $LDFLAGS" | |
| 292 LIBS= | |
| 293 xe_libs= | |
| 3312 | 294 ac_link='${CC-cc} -o conftest $CFLAGS '"$xe_cppflags $xe_ldflags"' conftest.$ac_ext '"$xe_libs"' 1>&AS_MESSAGE_LOG_FD' |
| 295 AC_LINK_IFELSE([AC_LANG_SOURCE([int x=0;])], | |
| 296 [cc_produces_so=yes],[cc_produces_so=no]) | |
| 388 | 297 LDFLAGS=$save_LDFLAGS |
| 298 LIBS=$save_LIBS | |
| 299 xe_libs=$save_xe_libs | |
| 3312 | 300 ac_link='${CC-cc} -o conftest $CFLAGS '"$xe_cppflags $xe_ldflags"' conftest.$ac_ext '"$xe_libs"' 1>&AS_MESSAGE_LOG_FD' |
| 388 | 301 else |
| 302 cc_produces_so=no | |
| 303 fi | |
| 304 AC_MSG_RESULT([${cc_produces_so}]) | |
| 305 | |
| 306 LTLD=$LD | |
| 307 if test -z "$LTLD"; then | |
| 308 ac_prog=ld | |
| 309 if test "$XEGCC" = yes; then | |
| 310 # Check if gcc -print-prog-name=ld gives a path. | |
| 2651 | 311 AC_MSG_CHECKING([for ld used by GCC]) |
| 388 | 312 ac_prog=`($CC -print-prog-name=ld) 2>&5` |
| 313 case "$ac_prog" in | |
| 314 # Accept absolute paths. | |
| 315 /*) | |
| 316 if test -z "$LTLD"; then | |
| 724 | 317 # case "$ac_prog" in |
| 318 # *gcc-lib*) LTLD="$CC" | |
| 319 # ;; | |
| 320 # *) | |
| 321 LTLD="$ac_prog" | |
| 322 # ;; | |
| 323 # esac | |
| 388 | 324 fi |
| 325 ;; | |
| 326 "") | |
| 327 # If it fails, then pretend we aren't using GCC. | |
| 328 ac_prog=ld | |
| 329 ;; | |
| 330 *) | |
| 331 # If it is relative, then search for the first ld in PATH. | |
| 332 with_gnu_ld=unknown | |
| 333 ;; | |
| 334 esac | |
| 335 else | |
| 2651 | 336 AC_MSG_CHECKING([for GNU ld]) |
| 388 | 337 fi |
| 338 | |
| 339 if test -z "$LTLD"; then | |
| 340 IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:" | |
| 341 for ac_dir in $PATH; do | |
| 342 test -z "$ac_dir" && ac_dir=. | |
| 343 if test -f "$ac_dir/$ac_prog"; then | |
| 344 LTLD="$ac_dir/$ac_prog" | |
| 345 # Check to see if the program is GNU ld. I'd rather use --version, | |
| 346 # but apparently some GNU ld's only accept -v. | |
| 347 # Break only if it was the GNU/non-GNU ld that we prefer. | |
| 3773 | 348 if "$LTLD" -v 2>&1 < /dev/null | $EGREP '(GNU|with BFD)' > /dev/null; then |
| 388 | 349 xe_gnu_ld=yes |
| 350 else | |
| 351 xe_gnu_ld=no | |
| 352 fi | |
| 353 fi | |
| 354 done | |
| 355 IFS="$ac_save_ifs" | |
| 356 fi | |
| 357 | |
| 358 if test -n "$LTLD"; then | |
| 359 AC_MSG_RESULT([${LTLD}]) | |
| 360 else | |
| 361 AC_MSG_RESULT(no) | |
| 362 fi | |
| 363 | |
| 364 if test -z "$LTLD" -a "$cc_produces_so" = no; then | |
| 365 AC_MSG_ERROR(no acceptable linker found in \$PATH) | |
| 366 exit 1 | |
| 367 fi | |
| 368 fi | |
| 369 | |
| 370 dnl | |
| 371 dnl Order of the tests changed somewhat to prevent repetition | |
| 372 dnl | |
| 373 ld_dynamic_link_flags= | |
| 374 | |
| 375 # Check to see if it really is or isn't GNU ld. | |
| 2651 | 376 AC_MSG_CHECKING([if the linker is GNU ld]) |
| 388 | 377 # I'd rather use --version here, but apparently some GNU ld's only accept -v. |
| 3773 | 378 if $LTLD -v 2>&1 </dev/null | $EGREP '(GNU|with BFD)' 1>&5; then |
| 388 | 379 xe_gnu_ld=yes |
| 380 else | |
| 381 xe_gnu_ld=no | |
| 382 fi | |
| 383 AC_MSG_RESULT([${xe_gnu_ld}]) | |
| 384 | |
| 385 case "$xehost_os" in | |
|
4759
aa5ed11f473b
Remove support for obsolete systems. See xemacs-patches message with ID
Jerry James <james@xemacs.org>
parents:
3773
diff
changeset
|
386 amigaos*) |
|
aa5ed11f473b
Remove support for obsolete systems. See xemacs-patches message with ID
Jerry James <james@xemacs.org>
parents:
3773
diff
changeset
|
387 # On this operating system, we should treat GNU ld like the system ld. |
| 388 | 388 gnu_ld_acts_native=yes |
| 389 ;; | |
| 390 *) | |
| 391 gnu_ld_acts_native=no | |
| 392 ;; | |
| 393 esac | |
| 394 | |
| 395 if test "$cc_produces_so" = "yes"; then | |
| 396 dll_ld=$CC | |
| 1678 | 397 case "$xehost_os" in |
| 398 *darwin*) | |
| 399 dnl On Darwin, we test with xcldf, but we use xldf | |
| 400 dll_ldflags=$xldf | |
| 401 ;; | |
| 402 *) | |
| 403 dll_ldflags=$xcldf | |
| 404 ;; | |
| 405 esac | |
| 388 | 406 can_build_shared=yes |
| 442 | 407 ld_shlibs=yes |
| 388 | 408 else |
| 409 # OK - only NOW do we futz about with ld. | |
| 410 # See if the linker supports building shared libraries. | |
| 2651 | 411 AC_MSG_CHECKING([whether the linker supports shared libraries]) |
| 388 | 412 dll_ld=$CC |
| 413 dll_ldflags=$LDFLAGS | |
| 414 ld_shlibs=yes | |
| 415 can_build_shared=yes | |
| 416 if test "$xe_gnu_ld" = yes && test "$gnu_ld_acts_native" != yes; then | |
| 417 # See if GNU ld supports shared libraries. | |
| 3773 | 418 if $LTLD --help 2>&1 | $EGREP ': supported targets:.* elf' > /dev/null; then |
| 388 | 419 dll_ld=$CC |
| 420 dll_ldflags="-shared" | |
| 421 ld_shlibs=yes | |
| 422 else | |
| 423 ld_shlibs=no | |
| 424 fi | |
| 425 else | |
| 426 # PORTME fill in a description of your system's linker (not GNU ld) | |
| 427 case "$xehost_os" in | |
| 460 | 428 aix[[4-9]]*) |
| 388 | 429 dll_ldflags=$xcldf |
| 430 ;; | |
| 431 | |
| 432 # FreeBSD 2.2.[012] allows us to include c++rt0.o to get C++ constructor | |
| 433 # support. Future versions do this automatically, but an explicit c++rt0.o | |
| 434 # doesn't break anything, and helps significantly (at the cost of a little | |
| 435 # extra space). | |
| 436 freebsd2.2*) | |
| 437 dll_ld=$LTLD | |
| 438 dll_ldflags=$xldf | |
| 439 dll_post="/usr/lib/c++rt0.o" | |
| 440 ;; | |
| 441 | |
| 442 # Unfortunately, older versions of FreeBSD 2 don't have this feature. | |
| 443 freebsd2*) | |
| 444 dll_ld=$LTLD | |
| 445 dll_ldflags="-Bshareable" | |
| 446 ;; | |
| 265 | 447 |
| 388 | 448 # FreeBSD 3, at last, uses gcc -shared to do shared libraries. |
| 449 freebsd3*) | |
| 450 dll_ldflags="-shared" | |
| 451 ;; | |
| 452 | |
| 453 hpux*) | |
| 454 dll_ld=$LTLD | |
| 455 dll_ldflags=$xldf | |
| 456 ;; | |
| 457 | |
| 460 | 458 irix[[5-9]]*) |
| 388 | 459 dll_ld=$LTLD |
| 460 dll_ldflags=$xldf | |
| 461 ;; | |
| 462 | |
| 463 netbsd*) | |
| 464 # Tested with NetBSD 1.2 ld | |
| 465 dll_ld=$LTLD | |
| 466 dll_ldflags=$xldf | |
| 467 ;; | |
| 468 | |
| 469 openbsd*) | |
| 470 dll_ld=$LTLD | |
| 471 dll_ldflags=$xldf | |
| 472 ;; | |
| 473 | |
| 474 osf3* | osf4*) | |
| 475 dll_ld=$LTLD | |
| 476 dll_ldflags=$xldf | |
| 477 ;; | |
| 478 | |
| 479 # For both SCO and Solaris we MAY want to have LDFLAGS include -z text | |
| 480 sco3.2v5* | unixware* | sysv5* | sysv4* | solaris2* | solaris7*) | |
| 481 dll_ld=$LTLD | |
| 482 case "$dll_ld" in | |
| 483 *gcc*) dll_ldflags="-shared" | |
| 484 dll_ld=$CC | |
| 485 ;; | |
| 486 *) dll_ldflags="-G" | |
| 487 ;; | |
| 488 esac | |
| 489 ;; | |
| 490 | |
| 491 uts4*) | |
| 492 dll_ld=$LTLD | |
| 493 dll_ldflags="-G" | |
| 494 ;; | |
| 495 | |
| 496 bsdi*) | |
| 497 dll_ldflags="-r" | |
| 498 dll_ld="shlicc2" | |
| 499 ;; | |
| 1470 | 500 |
| 388 | 501 *) |
| 502 ld_shlibs=no | |
| 503 can_build_shared=no | |
| 504 ;; | |
| 505 esac | |
| 506 fi | |
| 507 AC_MSG_RESULT([${ld_shlibs}]) | |
| 508 if test "$ld_shlibs" = "no"; then | |
| 509 can_build_shared=no | |
| 510 fi | |
| 511 fi # End of if cc_produces_so = no | |
| 265 | 512 |
| 388 | 513 dnl |
| 514 dnl Last thing, check how to get a linked executable to have its symbols | |
| 515 dnl exported, so that the modules have access to them. | |
| 516 dnl | |
| 442 | 517 dnl XEmacs FIXME - we need to set ld_dynamic_link_flags properly for |
| 388 | 518 dnl most of these systems, which was missing from libtool. I know they |
| 519 dnl all have a way of doing this, but someone needs to look at this | |
| 520 dnl for each OS and make sure it is correct. Remember that the arguments | |
| 521 dnl are passed when temacs is linked, this is NOT for modules. The sole | |
| 522 dnl purpose of the argument is to get the internal XEmacs symbols exposed | |
| 523 dnl for modules to use. This means that the COMPILER (and NOT the linker) | |
| 524 dnl is most often used to create temacs, so arguments to the linker will | |
| 525 dnl usually need to be prefix with ${wl} or some other such thing. | |
| 526 dnl | |
| 527 | |
| 4932 | 528 if test "$xe_gnu_ld" = yes -a "$ld_shlibs" = yes; then |
| 529 case "$xehost_os" in | |
| 530 *cygwin* | *mingw* ) | |
| 531 # -export-all-symbols is the PE equivalent of ELF-specific -export-dynamic | |
| 532 ld_dynamic_link_flags="${wl}-export-all-symbols" | |
| 533 ;; | |
| 534 | |
| 535 *) | |
| 388 | 536 ld_dynamic_link_flags="${wl}-export-dynamic" |
| 4932 | 537 ;; |
| 538 esac | |
| 388 | 539 fi |
| 540 | |
| 541 if test -z "$ld_dynamic_link_flags"; then | |
| 542 case "$xehost_os" in | |
| 460 | 543 aix[[3-9]]*) |
| 388 | 544 ld_dynamic_link_flags= |
| 545 ;; | |
| 546 | |
| 1678 | 547 *darwin*) |
| 548 ld_dynamic_link_flags= | |
| 549 ;; | |
| 550 | |
| 388 | 551 freebsd2.2*) |
| 552 ld_dynamic_link_flags= | |
| 553 ;; | |
| 554 | |
| 555 freebsd2*) | |
| 556 ld_dynamic_link_flags= | |
| 557 ;; | |
| 558 | |
| 559 freebsd3*) | |
| 560 ld_dynamic_link_flags= | |
| 561 ;; | |
| 562 | |
| 563 hpux*) | |
| 564 ld_dynamic_link_flags="${wl}-E" | |
| 565 ;; | |
| 566 | |
| 460 | 567 irix[[5-9]]*) |
| 388 | 568 ld_dynamic_link_flags= |
| 569 ;; | |
| 570 | |
| 571 netbsd*) | |
| 572 ld_dynamic_link_flags= | |
| 573 ;; | |
| 574 | |
| 575 openbsd*) | |
| 576 ld_dynamic_link_flags= | |
| 577 ;; | |
| 578 | |
| 579 osf3* | osf4*) | |
| 580 ld_dynamic_link_flags= | |
| 581 ;; | |
| 582 | |
| 398 | 583 solaris2* | solaris7*) |
| 426 | 584 ld_dynamic_link_flags= |
| 398 | 585 ;; |
| 586 | |
|
4759
aa5ed11f473b
Remove support for obsolete systems. See xemacs-patches message with ID
Jerry James <james@xemacs.org>
parents:
3773
diff
changeset
|
587 unixware* | sysv5* | sysv4*) |
| 388 | 588 ld_dynamic_link_flags="${wl}-Bexport" |
| 589 ;; | |
| 590 | |
| 591 uts4*) | |
| 592 ld_dynamic_link_flags= | |
| 593 ;; | |
| 594 | |
| 595 esac | |
| 596 fi # End of if -z ld_dynamic_link_flags | |
| 597 fi # End of if test "$can_build_shared" = "yes" | |
| 598 | |
| 265 | 599 AC_SUBST(dll_ld) |
| 600 AC_SUBST(dll_cflags) | |
| 388 | 601 AC_SUBST(dll_ldflags) |
| 602 AC_SUBST(dll_post) | |
| 603 AC_SUBST(dll_ldo) | |
| 604 AC_SUBST(ld_dynamic_link_flags) | |
| 265 | 605 ])dnl |
| 388 | 606 |