source3/lib/replace/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*)
  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 $ac_cv_prog_cc_Ae = yes; then
  75                         PICFLAG="+z +ESnolit"
  76                 elif test "${GCC}" = "yes"; then
  77                         PICFLAG="-fPIC"
  78                 fi
  79                 if test "$host_cpu" = "ia64"; then
  80                         PICFLAG="+z"
  81                 fi
  82                 ;;
  83         *osf*)
  84                 PICFLAG="-fPIC"
  85                 ;;
  86         *unixware*)
  87                 PICFLAG="-KPIC"
  88                 ;;
  89         *darwin*)
  90                 PICFLAG="-fno-common"
  91                 ;;
  92 esac
  93 AC_SUBST(PICFLAG)
  94 ])
  95
  96 AC_DEFUN([AC_LIBREPLACE_LD_SHLIB_LINKER],
  97 [
  98         LD_SHLIB_LINKER="${CC}"
  99
 100         case "$host_os" in
 101                 *irix*)
 102                         LD_SHLIB_LINKER="${PROG_LD}"
 103                         ;;
 104         esac
 105
 106         AC_SUBST(LD_SHLIB_LINKER)
 107 ])
 108
 109 AC_DEFUN([AC_LIBREPLACE_LD_SHLIB_FLAGS],
 110 [
 111         LD_SHLIB_FLAGS="-shared"
 112
 113         case "$host_os" in
 114                 *linux*)
 115                         LD_SHLIB_FLAGS="-shared -Wl,-Bsymbolic"
 116                         ;;
 117                 *solaris*)
 118                         LD_SHLIB_FLAGS="-G"
 119                         if test "${GCC}" = "no"; then
 120                                 ## ${CFLAGS} added for building 64-bit shared
 121                                 ## libs using Sun's Compiler
 122                                 LD_SHLIB_FLAGS="-G \${CFLAGS}"
 123                         fi
 124                         ;;
 125                 *sunos*)
 126                         LD_SHLIB_FLAGS="-G"
 127                         ;;
 128                 *irix*)
 129                         LD_SHLIB_FLAGS="-shared"
 130                         ;;
 131                 *aix*)
 132                         LD_SHLIB_FLAGS="-Wl,-G,-bexpall,-bbigtoc"
 133                         ;;
 134                 *hpux*)
 135                         if test "${GCC}" = "yes"; then
 136                                 LD_SHLIB_FLAGS="-shared"
 137                         else
 138                                 LD_SHLIB_FLAGS="-b"
 139                         fi
 140                         ;;
 141                 *osf*)
 142                         LD_SHLIB_FLAGS="-shared"
 143                         ;;
 144                 *darwin*)
 145                         LD_SHLIB_FLAGS="-dynamiclib -Wl,-search_paths_first"
 146                         ;;
 147         esac
 148
 149         AC_SUBST(LD_SHLIB_FLAGS)
 150 ])
 151
 152 AC_DEFUN([AC_LIBREPLACE_LD_SHLIB_DISALLOW_UNDEF_FLAG],
 153 [
 154         LD_SHLIB_DISALLOW_UNDEF_FLAG=""
 155
 156         #
 157         # TODO: enforce error not only warnings
 158         #
 159         # NOTE: -Wl,--no-allow-shlib-undefined isn't what we want...
 160         #       as it bails out on broken system libraries
 161         #
 162         case "$host_os" in
 163                 *osf*)
 164                         LD_SHLIB_DISALLOW_UNDEF_FLAG="-warning_unresolved"
 165                         ;;
 166                 *darwin*)
 167                         LD_SHLIB_DISALLOW_UNDEF_FLAG="-undefined error"
 168                         ;;
 169         esac
 170
 171         AC_SUBST(LD_SHLIB_DISALLOW_UNDEF_FLAG)
 172 ])
 173
 174 AC_DEFUN([AC_LIBREPLACE_SHLD],
 175 [
 176         AC_REQUIRE([AC_LIBREPLACE_LD_SHLIB_LINKER])
 177         SHLD="$LD_SHLIB_LINKER"
 178         AC_SUBST(SHLD)
 179 ])
 180
 181 AC_DEFUN([AC_LIBREPLACE_SHLD_FLAGS],
 182 [
 183         AC_REQUIRE([AC_LIBREPLACE_LD_SHLIB_FLAGS])
 184         AC_REQUIRE([AC_LIBREPLACE_LD_SHLIB_DISALLOW_UNDEF_FLAG])
 185         SHLD_FLAGS="$LD_SHLIB_FLAGS $LD_SHLIB_DISALLOW_UNDEF_FLAG"
 186         AC_SUBST(SHLD_FLAGS)
 187 ])
 188
 189 AC_DEFUN([AC_LD_SHLIBEXT],
 190 [
 191         SHLIBEXT="so"
 192         case "$host_os" in
 193                 *hpux*)
 194                         if test "$host_cpu" = "ia64"; then
 195                                 SHLIBEXT="so"
 196                         else
 197                                 SHLIBEXT="sl"
 198                         fi
 199                 ;;
 200                 *darwin*)
 201                         SHLIBEXT="dylib"
 202                 ;;
 203         esac
 204         AC_SUBST(SHLIBEXT)
 205 ])
 206
 207 AC_DEFUN([AC_LD_SONAMEFLAG],
 208 [
 209         AC_SUBST(SONAMEFLAG)
 210         SONAMEFLAG=""
 211         case "$host_os" in
 212                 *linux*)
 213                         SONAMEFLAG="-Wl,-soname="
 214                         ;;
 215                 *solaris*)
 216                         SONAMEFLAG="-h "
 217                         if test "${GCC}" = "yes"; then
 218                                 SONAMEFLAG="-Wl,-soname="
 219                         fi
 220                         ;;
 221                 *sunos*)
 222                         SONAMEFLAG="-Wl,-h,"
 223                         ;;
 224                 *netbsd* | *freebsd* | *dragonfly* )
 225                         SONAMEFLAG="-Wl,-soname,"
 226                         ;;
 227                 *openbsd*)
 228                         SONAMEFLAG="-Wl,-soname,"
 229                         ;;
 230                 *irix*)
 231                         SONAMEFLAG="-Wl,-soname,"
 232                         ;;
 233                 *hpux*)
 234                         SONAMEFLAG="-Wl,+h,"
 235                         ;;
 236                 *osf*)
 237                         SONAMEFLAG="-Wl,-soname,"
 238                         ;;
 239                 *unixware*)
 240                         SONAMEFLAG="-Wl,-soname,"
 241                         ;;
 242                 *darwin*)
 243                         SONAMEFLAG="#"
 244                         ;;
 245                 *aix*)
 246                         # Not supported
 247                         SONAMEFLAG="#"
 248                         ;;
 249                 esac
 250 ])
 251
 252 AC_DEFUN([AC_LIBREPLACE_MDLD],
 253 [
 254         AC_REQUIRE([AC_LIBREPLACE_LD_SHLIB_LINKER])
 255         MDLD="$LD_SHLIB_LINKER"
 256         AC_SUBST(MDLD)
 257 ])
 258
 259 AC_DEFUN([AC_LIBREPLACE_LD_SHLIB_ALLOW_UNDEF_FLAG],
 260 [
 261         LD_ALLOW_SHLIB_UNDEF_FLAG=""
 262
 263         case "$host_os" in
 264                 *linux*)
 265                         LD_SHLIB_ALLOW_UNDEF_FLAG="-Wl,--allow-shlib-undefined"
 266                         ;;
 267                 *osf*)
 268                         LD_SHLIB_ALLOW_UNDEF_FLAG="-Wl,-expect_unresolved,\"*\""
 269                         ;;
 270                 *darwin*)
 271                         LD_SHLIB_ALLOW_UNDEF_FLAG="-undefined dynamic_lookup"
 272                         ;;
 273                 *aix*)
 274                         LD_SHLIB_ALLOW_UNDEF_FLAG="--Wl,-bnoentry"
 275                         ;;
 276         esac
 277
 278         AC_SUBST(LD_SHLIB_ALLOW_UNDEF_FLAG)
 279 ])
 280
 281 AC_DEFUN([AC_LIBREPLACE_MDLD_FLAGS],
 282 [
 283         AC_REQUIRE([AC_LIBREPLACE_LD_SHLIB_FLAGS])
 284         AC_REQUIRE([AC_LIBREPLACE_LD_SHLIB_ALLOW_UNDEF_FLAG])
 285         MDLD_FLAGS="$LD_SHLIB_FLAGS $LD_SHLIB_ALLOW_UNDEF_FLAG"
 286         AC_SUBST(MDLD_FLAGS)
 287 ])
 288
 289 AC_DEFUN([AC_LIBREPLACE_RUNTIME_LIB_PATH_VAR],
 290 [
 291         case "$host_os" in
 292                 *linux*)
 293                         LIB_PATH_VAR=LD_LIBRARY_PATH
 294                 ;;
 295                 *netbsd*)
 296                         LIB_PATH_VAR=LD_LIBRARY_PATH
 297                 ;;
 298                 *solaris*)
 299                         LIB_PATH_VAR=LD_LIBRARY_PATH
 300                 ;;
 301                 *hpux*)
 302                         LIB_PATH_VAR=SHLIB_PATH
 303                 ;;
 304                 *osf*)
 305                         LIB_PATH_VAR=LD_LIBRARY_PATH
 306                 ;;
 307                 *aix*)
 308                         LIB_PATH_VAR=LIB_PATH
 309                         ;;
 310                 *irix*)
 311                         LIB_PATH_VAR=LD_LIBRARY_PATH
 312                         ;;
 313                 *darwin*)
 314                         LIB_PATH_VAR=DYLD_LIBRARY_PATH
 315                         ;;
 316         esac
 317
 318         AC_SUBST(LIB_PATH_VAR)
 319 ])