source4/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_LD_EXPORT_DYNAMIC],
   7 [
   8 saved_LDFLAGS="$LDFLAGS"
   9 if AC_TRY_COMMAND([${CC-cc} $CFLAGS -Wl,--version 2>&1 | grep "GNU ld" >/dev/null]); then
  10         LD_EXPORT_DYNAMIC="-Wl,-export-dynamic"
  11 else
  12         case "$host_os" in
  13                 hpux* )
  14                   LD_EXPORT_DYNAMIC="-Wl,-E"
  15                   ;;
  16                 *)
  17                   LD_EXPORT_DYNAMIC=""
  18                   ;;
  19           esac
  20 fi
  21 AC_SUBST(LD_EXPORT_DYNAMIC)
  22 LDFLAGS="$saved_LDFLAGS"
  23 ])
  24
  25 AC_DEFUN([AC_LD_PICFLAG],
  26 [
  27 case "$host_os" in
  28         *linux*)
  29                 PICFLAG="-fPIC"
  30                 ;;
  31         *solaris*)
  32                 if test "${GCC}" = "yes"; then
  33                         PICFLAG="-fPIC"
  34                 else
  35                         PICFLAG="-KPIC"
  36                 fi
  37                 ;;
  38         *sunos*)
  39                 PICFLAG="-KPIC"   # Is this correct for SunOS
  40                 ;;
  41         *netbsd* | *freebsd* | *dragonfly* )
  42                 PICFLAG="-fPIC -DPIC"
  43                 ;;
  44         *openbsd*)
  45                 PICFLAG="-fPIC"
  46                 ;;
  47         *irix*)
  48                 if test "${GCC}" = "yes"; then
  49                         PICFLAG="-fPIC"
  50                 else
  51                         PICFLAG="-KPIC"
  52                 fi
  53                 ;;
  54         *aix*)
  55                 # as AIX code is always position independent...
  56                 PICFLAG="-O2"
  57                 ;;
  58         *hpux*)
  59                 if test $ac_cv_prog_cc_Ae = yes; then
  60                         PICFLAG="+z +ESnolit"
  61                 elif test "${GCC}" = "yes"; then
  62                         PICFLAG="-fPIC"
  63                 fi
  64                 if test "$host_cpu" = "ia64"; then
  65                         PICFLAG="+z"
  66                 fi
  67                 ;;
  68         *osf*)
  69                 PICFLAG="-fPIC"
  70                 ;;
  71         *unixware*)
  72                 PICFLAG="-KPIC"
  73                 ;;
  74         *darwin*)
  75                 PICFLAG="-fno-common"
  76                 ;;
  77 esac
  78 AC_SUBST(PICFLAG)
  79 ])
  80
  81 AC_DEFUN([AC_LIBREPLACE_SHLD_FLAGS],
  82 [
  83         SHLD_FLAGS="-shared"
  84
  85         case "$host_os" in
  86                 *linux*)
  87                         SHLD_FLAGS="-shared -Wl,-Bsymbolic"
  88                         ;;
  89                 *solaris*)
  90                         SHLD_FLAGS="-G"
  91                         if test "${GCC}" = "no"; then
  92                                 ## ${CFLAGS} added for building 64-bit shared
  93                                 ## libs using Sun's Compiler
  94                                 SHLD_FLAGS="-G \${CFLAGS}"
  95                         fi
  96                         ;;
  97                 *sunos*)
  98                         SHLD_FLAGS="-G"
  99                         ;;
 100                 *irix*)
 101                         SHLD_FLAGS="-shared"
 102                         ;;
 103                 *aix*)
 104                         SHLD_FLAGS="-Wl,-G,-bexpall,-bbigtoc"
 105                         ;;
 106                 *hpux*)
 107                         if test "${GCC}" = "yes"; then
 108                                 SHLD_FLAGS="-shared"
 109                         else
 110                                 SHLD_FLAGS="-b"
 111                         fi
 112                         ;;
 113                 *osf*)
 114                         SHLD_FLAGS="-shared -warning_unresolved"
 115                         ;;
 116                 *darwin*)
 117                         SHLD_FLAGS="-bundle -flat_namespace -undefined warning -Wl,-search_paths_first"
 118                         ;;
 119         esac
 120
 121         AC_SUBST(SHLD_FLAGS)
 122 ])
 123
 124 AC_DEFUN([AC_LD_SHLIBEXT],
 125 [
 126         SHLIBEXT="so"
 127         case "$host_os" in
 128                 *hpux*)
 129                         if test "$host_cpu" = "ia64"; then
 130                                 SHLIBEXT="so"
 131                         else
 132                                 SHLIBEXT="sl"
 133                         fi
 134                 ;;
 135                 *darwin*)
 136                         SHLIBEXT="dylib"
 137                 ;;
 138         esac
 139         AC_SUBST(SHLIBEXT)
 140 ])
 141
 142 AC_DEFUN([AC_LD_SONAMEFLAG],
 143 [
 144         AC_SUBST(SONAMEFLAG)
 145         SONAMEFLAG=""
 146         case "$host_os" in
 147                 *linux*)
 148                         SONAMEFLAG="-Wl,-soname="
 149                         ;;
 150                 *solaris*)
 151                         SONAMEFLAG="-h "
 152                         if test "${GCC}" = "yes"; then
 153                                 SONAMEFLAG="-Wl,-soname="
 154                         fi
 155                         ;;
 156                 *sunos*)
 157                         SONAMEFLAG="-Wl,-h,"
 158                         ;;
 159                 *netbsd* | *freebsd* | *dragonfly* )
 160                         SONAMEFLAG="-Wl,-soname,"
 161                         ;;
 162                 *openbsd*)
 163                         SONAMEFLAG="-Wl,-soname,"
 164                         ;;
 165                 *irix*)
 166                         SONAMEFLAG="-Wl,-soname,"
 167                         ;;
 168                 *hpux*)
 169                         SONAMEFLAG="-Wl,+h,"
 170                         ;;
 171                 *osf*)
 172                         SONAMEFLAG="-Wl,-soname,"
 173                         ;;
 174                 *unixware*)
 175                         SONAMEFLAG="-Wl,-soname,"
 176                         ;;
 177                 *darwin*)
 178                         SONAMEFLAG="#"
 179                         ;;
 180                 *aix*)
 181                         # Not supported
 182                         SONAMEFLAG="#"
 183                         ;;
 184                 esac
 185 ])
 186
 187 AC_DEFUN([AC_LIBREPLACE_MDLD],
 188 [
 189         MDLD="${CC}"
 190
 191         case "$host_os" in
 192                 *irix*)
 193                         MDLD="${PROG_LD}"
 194                         ;;
 195         esac
 196
 197         AC_SUBST(MDLD)
 198 ])
 199
 200 AC_DEFUN([AC_LIBREPLACE_MDLD_FLAGS],
 201 [
 202         MDLD_FLAGS="-shared"
 203
 204         case "$host_os" in
 205                 *linux*)
 206                         MDLD_FLAGS="-shared -Wl,-Bsymbolic -Wl,--allow-shlib-undefined"
 207                         ;;
 208                 *solaris*)
 209                         MDLD_FLAGS="-G"
 210                         if test "${GCC}" = "no"; then
 211                                 ## ${CFLAGS} added for building 64-bit shared
 212                                 ## libs using Sun's Compiler
 213                                 NDLD_FLAGS="-G \${CFLAGS}"
 214                         fi
 215                         ;;
 216                 *sunos*)
 217                         MDLD_FLAGS="-G"
 218                         ;;
 219                 *aix*)
 220                         MDLD_FLAGS="-Wl,-G,-bexpall,-bbigtoc"
 221                         ;;
 222                 *hpux*)
 223                         if test "${GCC}" = "yes"; then
 224                                 MDLD_FLAGS="-shared"
 225                         else
 226                                 MDLD_FLAGS="-b"
 227                         fi
 228                         ;;
 229                 *osf*)
 230                         MDLD_FLAGS="-shared -expect_unresolved '*'"
 231                         ;;
 232                 *darwin*)
 233                         MDLD_FLAGS="-bundle -flat_namespace -undefined suppress -Wl,-search_paths_first"
 234                         ;;
 235         esac
 236
 237         AC_SUBST(MDLD_FLAGS)
 238 ])