third_party/talloc/libreplace/libreplace_ld.m4

   1 #
   2 # This offers a nice overview how to build shared libraries on all platforms
   3 #        http://www.fortran-2000.com/ArnaudRecipes/sharedlib.html
   4 #
   5
   6 AC_DEFUN([AC_LIBREPLACE_STLD],
   7 [
   8         AC_PATH_PROG(PROG_AR, ar)
   9
  10         STLD=${PROG_AR}
  11
  12         AC_SUBST(STLD)
  13 ])
  14
  15 AC_DEFUN([AC_LIBREPLACE_STLD_FLAGS],
  16 [
  17         STLD_FLAGS="-rcs"
  18         AC_SUBST(STLD_FLAGS)
  19 ])
  20
  21 AC_DEFUN([AC_LD_EXPORT_DYNAMIC],
  22 [
  23 saved_LDFLAGS="$LDFLAGS"
  24 if AC_TRY_COMMAND([${CC-cc} $CFLAGS -Wl,--version 2>&1 | grep "GNU ld" >/dev/null]); then
  25         LD_EXPORT_DYNAMIC="-Wl,-export-dynamic"
  26 else
  27         case "$host_os" in
  28                 hpux* )
  29                   LD_EXPORT_DYNAMIC="-Wl,-E"
  30                   ;;
  31                 *)
  32                   LD_EXPORT_DYNAMIC=""
  33                   ;;
  34           esac
  35 fi
  36 AC_SUBST(LD_EXPORT_DYNAMIC)
  37 LDFLAGS="$saved_LDFLAGS"
  38 ])
  39
  40 AC_DEFUN([AC_LD_PICFLAG],
  41 [
  42 case "$host_os" in
  43         *linux*|*gnu*)
  44                 PICFLAG="-fPIC"
  45                 ;;
  46         *solaris*)
  47                 if test "${GCC}" = "yes"; then
  48                         PICFLAG="-fPIC"
  49                 else
  50                         PICFLAG="-KPIC"
  51                 fi
  52                 ;;
  53         *sunos*)
  54                 PICFLAG="-KPIC"   # Is this correct for SunOS
  55                 ;;
  56         *netbsd* | *freebsd* | *dragonfly* )
  57                 PICFLAG="-fPIC -DPIC"
  58                 ;;
  59         *openbsd*)
  60                 PICFLAG="-fPIC"
  61                 ;;
  62         *irix*)
  63                 if test "${GCC}" = "yes"; then
  64                         PICFLAG="-fPIC"
  65                 else
  66                         PICFLAG="-KPIC"
  67                 fi
  68                 ;;
  69         *aix*)
  70                 # as AIX code is always position independent...
  71                 PICFLAG="-O2"
  72                 ;;
  73         *hpux*)
  74                 if test "${GCC}" = "yes"; then
  75                         PICFLAG="-fPIC"
  76                 elif test "$host_cpu" = "ia64"; then
  77                         PICFLAG="+z"
  78                 elif test $ac_cv_prog_cc_Ae = yes; then
  79                         PICFLAG="+z +ESnolit"
  80                 fi
  81                 ;;
  82         *osf*)
  83                 PICFLAG="-fPIC"
  84                 ;;
  85         *unixware*)
  86                 PICFLAG="-KPIC"
  87                 ;;
  88         *darwin*)
  89                 PICFLAG="-fno-common"
  90                 ;;
  91 esac
  92 AC_SUBST(PICFLAG)
  93 ])
  94
  95 AC_DEFUN([AC_LIBREPLACE_LD_SHLIB_LINKER],
  96 [
  97         LD_SHLIB_LINKER="${CC}"
  98
  99         case "$host_os" in
 100                 *irix*)
 101                         LD_SHLIB_LINKER="${PROG_LD}"
 102                         ;;
 103         esac
 104
 105         AC_SUBST(LD_SHLIB_LINKER)
 106 ])
 107
 108 AC_DEFUN([AC_LIBREPLACE_LD_SHLIB_FLAGS],
 109 [
 110         LD_SHLIB_FLAGS="-shared"
 111
 112         case "$host_os" in
 113                 *linux*|*gnu*)
 114                         LD_SHLIB_FLAGS="-shared -Wl,-Bsymbolic"
 115                         ;;
 116                 *solaris*)
 117                         LD_SHLIB_FLAGS="-G"
 118                         if test "${GCC}" = "no"; then
 119                                 ## ${CFLAGS} added for building 64-bit shared
 120                                 ## libs using Sun's Compiler
 121                                 LD_SHLIB_FLAGS="-G \${CFLAGS}"
 122                         fi
 123                         ;;
 124                 *sunos*)
 125                         LD_SHLIB_FLAGS="-G"
 126                         ;;
 127                 *irix*)
 128                         LD_SHLIB_FLAGS="-shared"
 129                         ;;
 130                 *aix*)
 131                         LD_SHLIB_FLAGS="-Wl,-G,-bexpall,-bbigtoc"
 132                         ;;
 133                 *hpux*)
 134                         if test "${GCC}" = "yes"; then
 135                                 LD_SHLIB_FLAGS="-shared"
 136                         else
 137                                 LD_SHLIB_FLAGS="-b"
 138                         fi
 139                         ;;
 140                 *osf*)
 141                         LD_SHLIB_FLAGS="-shared"
 142                         ;;
 143                 *darwin*)
 144                         LD_SHLIB_FLAGS="-dynamiclib -Wl,-search_paths_first"
 145                         ;;
 146         esac
 147
 148         AC_SUBST(LD_SHLIB_FLAGS)
 149 ])
 150
 151 AC_DEFUN([AC_LIBREPLACE_LD_SHLIB_DISALLOW_UNDEF_FLAG],
 152 [
 153         LD_SHLIB_DISALLOW_UNDEF_FLAG=""
 154
 155         #
 156         # TODO: enforce error not only warnings
 157         #
 158         # NOTE: -Wl,--no-allow-shlib-undefined isn't what we want...
 159         #       as it bails out on broken system libraries
 160         #
 161         case "$host_os" in
 162                 *osf*)
 163                         LD_SHLIB_DISALLOW_UNDEF_FLAG="-warning_unresolved"
 164                         ;;
 165                 *darwin*)
 166                         LD_SHLIB_DISALLOW_UNDEF_FLAG="-undefined error"
 167                         ;;
 168         esac
 169
 170         AC_SUBST(LD_SHLIB_DISALLOW_UNDEF_FLAG)
 171 ])
 172
 173 AC_DEFUN([AC_LIBREPLACE_SHLD],
 174 [
 175         AC_REQUIRE([AC_LIBREPLACE_LD_SHLIB_LINKER])
 176         SHLD="$LD_SHLIB_LINKER"
 177         AC_SUBST(SHLD)
 178 ])
 179
 180 AC_DEFUN([AC_LIBREPLACE_SHLD_FLAGS],
 181 [
 182         AC_REQUIRE([AC_LIBREPLACE_LD_SHLIB_FLAGS])
 183         AC_REQUIRE([AC_LIBREPLACE_LD_SHLIB_DISALLOW_UNDEF_FLAG])
 184         SHLD_FLAGS="$LD_SHLIB_FLAGS $LD_SHLIB_DISALLOW_UNDEF_FLAG"
 185         AC_SUBST(SHLD_FLAGS)
 186 ])
 187
 188 AC_DEFUN([AC_LD_SHLIBEXT],
 189 [
 190         SHLIBEXT="so"
 191         case "$host_os" in
 192                 *hpux*)
 193                         if test "$host_cpu" = "ia64"; then
 194                                 SHLIBEXT="so"
 195                         else
 196                                 SHLIBEXT="sl"
 197                         fi
 198                 ;;
 199                 *darwin*)
 200                         SHLIBEXT="dylib"
 201                 ;;
 202         esac
 203         AC_SUBST(SHLIBEXT)
 204 ])
 205
 206 AC_DEFUN([AC_LD_SONAMEFLAG],
 207 [
 208         AC_SUBST(SONAMEFLAG)
 209         SONAMEFLAG=""
 210         case "$host_os" in
 211                 *linux*|*gnu*|*qnx*)
 212                         SONAMEFLAG="-Wl,-soname="
 213                         ;;
 214                 *solaris*)
 215                         SONAMEFLAG="-h "
 216                         if test "${GCC}" = "yes"; then
 217                                 SONAMEFLAG="-Wl,-soname="
 218                         fi
 219                         ;;
 220                 *sunos*)
 221                         SONAMEFLAG="-Wl,-h,"
 222                         ;;
 223                 *netbsd* | *freebsd* | *dragonfly* )
 224                         SONAMEFLAG="-Wl,-soname,"
 225                         ;;
 226                 *openbsd*)
 227                         SONAMEFLAG="-Wl,-soname,"
 228                         ;;
 229                 *irix*)
 230                         SONAMEFLAG="-Wl,-soname,"
 231                         ;;
 232                 *hpux*)
 233                         SONAMEFLAG="-Wl,+h,"
 234                         ;;
 235                 *osf*)
 236                         SONAMEFLAG="-Wl,-soname,"
 237                         ;;
 238                 *unixware*)
 239                         SONAMEFLAG="-Wl,-soname,"
 240                         ;;
 241                 *darwin*)
 242                         SONAMEFLAG="#"
 243                         ;;
 244                 *aix*)
 245                         # Not supported
 246                         SONAMEFLAG="#"
 247                         ;;
 248                 esac
 249 ])
 250
 251 AC_DEFUN([AC_LD_VERSIONSCRIPT],
 252 [
 253         AC_SUBST(VERSIONSCRIPT)
 254         VERSIONSCRIPT=""
 255         case "$host_os" in
 256                 *linux*|*gnu*)
 257                         VERSIONSCRIPT="-Wl,--version-script"
 258                         ;;
 259                 *solaris*)
 260                         if test "${GCC}" = "yes"; then
 261                                 VERSIONSCRIPT="-Wl,--version-script"
 262                         fi
 263                         ;;
 264                 esac
 265 ])
 266
 267 AC_DEFUN([AC_LIBREPLACE_MDLD],
 268 [
 269         AC_REQUIRE([AC_LIBREPLACE_LD_SHLIB_LINKER])
 270         MDLD="$LD_SHLIB_LINKER"
 271         AC_SUBST(MDLD)
 272 ])
 273
 274 AC_DEFUN([AC_LIBREPLACE_LD_SHLIB_ALLOW_UNDEF_FLAG],
 275 [
 276         LD_ALLOW_SHLIB_UNDEF_FLAG=""
 277
 278         case "$host_os" in
 279                 *linux*|*gnu*)
 280                         LD_SHLIB_ALLOW_UNDEF_FLAG="-Wl,--allow-shlib-undefined"
 281                         ;;
 282                 *osf*)
 283                         LD_SHLIB_ALLOW_UNDEF_FLAG="-Wl,-expect_unresolved,\"*\""
 284                         ;;
 285                 *darwin*)
 286                         LD_SHLIB_ALLOW_UNDEF_FLAG="-undefined dynamic_lookup"
 287                         ;;
 288                 *aix*)
 289                         LD_SHLIB_ALLOW_UNDEF_FLAG="-Wl,-bnoentry"
 290                         ;;
 291         esac
 292
 293         AC_SUBST(LD_SHLIB_ALLOW_UNDEF_FLAG)
 294 ])
 295
 296 AC_DEFUN([AC_LIBREPLACE_MDLD_FLAGS],
 297 [
 298         AC_REQUIRE([AC_LIBREPLACE_LD_SHLIB_FLAGS])
 299         AC_REQUIRE([AC_LIBREPLACE_LD_SHLIB_ALLOW_UNDEF_FLAG])
 300         MDLD_FLAGS="$LD_SHLIB_FLAGS $LD_SHLIB_ALLOW_UNDEF_FLAG"
 301         AC_SUBST(MDLD_FLAGS)
 302 ])
 303
 304 AC_DEFUN([AC_LIBREPLACE_RUNTIME_LIB_PATH_VAR],
 305 [
 306         case "$host_os" in
 307                 *linux*|*gnu*)
 308                         LIB_PATH_VAR=LD_LIBRARY_PATH
 309                 ;;
 310                 *bsd*)
 311                         LIB_PATH_VAR=LD_LIBRARY_PATH
 312                 ;;
 313                 *solaris*)
 314                         LIB_PATH_VAR=LD_LIBRARY_PATH
 315                 ;;
 316                 *hpux*)
 317                         LIB_PATH_VAR=SHLIB_PATH
 318                 ;;
 319                 *osf*)
 320                         LIB_PATH_VAR=LD_LIBRARY_PATH
 321                 ;;
 322                 *aix*)
 323                         LIB_PATH_VAR=LIBPATH
 324                         ;;
 325                 *irix*)
 326                         LIB_PATH_VAR=LD_LIBRARY_PATH
 327                         ;;
 328                 *darwin*)
 329                         LIB_PATH_VAR=DYLD_LIBRARY_PATH
 330                         ;;
 331                 *)
 332                         LIB_PATH_VAR=LD_LIBRARY_PATH
 333                         ;;
 334         esac
 335
 336         AC_SUBST(LIB_PATH_VAR)
 337 ])