ceph/src/boost/tools/build/src/engine/boehm_gc/doc/README.DGUX386

   1     Garbage Collector (parallel iversion) for ix86 DG/UX Release R4.20MU07
   2
   3
   4      *READ* the file README.QUICK.
   5
   6      You need the GCC-3.0.3 rev (DG/UX) compiler to build this tree.
   7      This compiler has the new "dgux386" threads package implemented.
   8      It also supports the switch "-pthread" needed to link correctly
   9      the DG/UX's -lrte -lthread with -lgcc and the system's -lc.
  10      Finally we support parralleli-mark for the SMP DG/UX machines.
  11      To build the garbage collector do:
  12
  13       ./configure --enable-parallel-mark
  14       make
  15       make gctest
  16
  17      Before you run "gctest" you need to set your LD_LIBRARY_PATH
  18      correctly so that "gctest" can find the shared library libgc.
  19      Alternatively you can do a configuration
  20
  21       ./configure --enable-parallel-mark --disable-shared
  22
  23      to build only the static version of libgc.
  24
  25      To enable debugging messages please do:
  26      1) Add the "--enable-full-debug" flag during configuration.
  27      2) Edit the file linux-threads.c and uncommnect the line:
  28
  29      /* #define DEBUG_THREADS 1 */ to --->
  30
  31      #define DEBUG_THREADS 1
  32
  33      Then give "make" as usual.
  34
  35      In a machine with 4 CPUs (my own machine) the option parallel
  36      mark (aka --enable-parallel-mark) makes a BIG difference.
  37
  38      Takis Psarogiannakopoulos
  39      University of Cambridge
  40      Centre for Mathematical Sciences
  41      Department of Pure Mathematics
  42      Wilberforce Road
  43      Cambridge CB3 0WB ,UK , <takis@XFree86.Org>
  44      January 2002
  45
  46
  47 Note (HB):
  48      The integration of this patch is currently not complete.
  49      The following patches against 6.1alpha3 where hard to move
  50      to alpha4, and are not integrated.  There may also be minor
  51      problems with stylistic corrections made by me.
  52
  53
  54 --- ltconfig.ORIG       Mon Jan 28 20:22:18 2002
  55 +++ ltconfig    Mon Jan 28 20:44:00 2002
  56 @@ -689,6 +689,11 @@
  57         pic_flag=-Kconform_pic
  58      fi
  59      ;;
  60 +  dgux*)
  61 +    pic_flag='-fPIC'
  62 +    link_static='-Bstatic'
  63 +    wl='-Wl,'
  64 +    ;;
  65    *)
  66      pic_flag='-fPIC'
  67      ;;
  68 @@ -718,6 +723,12 @@
  69      # We can build DLLs from non-PIC.
  70      ;;
  71
  72 +  dgux*)
  73 +    pic_flag='-KPIC'
  74 +    link_static='-Bstatic'
  75 +    wl='-Wl,'
  76 +    ;;
  77 +
  78    osf3* | osf4* | osf5*)
  79      # All OSF/1 code is PIC.
  80      wl='-Wl,'
  81 @@ -1154,6 +1165,22 @@
  82      fi
  83      ;;
  84
  85 +  dgux*)
  86 +    ld_shlibs=yes
  87 +    # For both C/C++ ommit the deplibs. This is because we relying on the fact
  88 +    # that compilation of execitables will put them in correct order
  89 +    # in any case and sometimes are wrong when listed as deplibs (or missing some deplibs)
  90 +    # However when GNU ld and --whole-archive needs to be used we have the problem
  91 +    # that if the -fPIC *_s.a archive is linked through deplibs list we ommiting crucial
  92 +    # .lo/.o files from the created shared lib. This I think is not the case here.
  93 +    archive_cmds='$CC -shared -h $soname -o $lib $libobjs $linkopts'
  94 +    thread_safe_flag_spec='-pthread'
  95 +    wlarc=
  96 +    hardcode_libdir_flag_spec='-L$libdir'
  97 +    hardcode_shlibpath_var=no
  98 +    ac_cv_archive_cmds_needs_lc=no
  99 +    ;;
 100 +
 101    cygwin* | mingw*)
 102      # hardcode_libdir_flag_spec is actually meaningless, as there is
 103      # no search path for DLLs.
 104 @@ -1497,7 +1524,7 @@
 105      ;;
 106
 107    dgux*)
 108 -    archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linkopts'
 109 +    archive_cmds='$CC -shared -h $soname -o $lib $libobjs $linkopts'
 110      hardcode_libdir_flag_spec='-L$libdir'
 111      hardcode_shlibpath_var=no
 112      ;;
 113 @@ -2092,12 +2119,17 @@
 114    ;;
 115
 116  dgux*)
 117 -  version_type=linux
 118 +  version_type=dgux
 119    need_lib_prefix=no
 120    need_version=no
 121 -  library_names_spec='${libname}${release}.so$versuffix ${libname}${release}.so$major $libname.so'
 122 -  soname_spec='${libname}${release}.so$major'
 123 +  library_names_spec='$libname.so$versuffix'
 124 +  soname_spec='$libname.so$versuffix'
 125    shlibpath_var=LD_LIBRARY_PATH
 126 +  thread_safe_flag_spec='-pthread'
 127 +  wlarc=
 128 +  hardcode_libdir_flag_spec='-L$libdir'
 129 +  hardcode_shlibpath_var=no
 130 +  ac_cv_archive_cmds_needs_lc=no
 131    ;;
 132
 133  sysv4*MP*)
 134
 135
 136 --- ltmain.sh.ORIG      Mon Jan 28 20:31:18 2002
 137 +++ ltmain.sh   Tue Jan 29 00:11:29 2002
 138 @@ -1072,11 +1072,38 @@
 139         esac
 140         ;;
 141
 142 +      -thread*)
 143 +       # DG/UX GCC 2.95.x, 3.x.x rev (DG/UX) links -lthread
 144 +       # with the switch -threads
 145 +       if test "$arg" = "-threads"; then
 146 +         case "$host" in
 147 +         i[3456]86-*-dgux*)
 148 +           deplibs="$deplibs $arg"
 149 +           continue
 150 +           ;;
 151 +         esac
 152 +       fi
 153 +       ;;
 154 +
 155 +      -pthread*)
 156 +       # DG/UX GCC 2.95.x, 3.x.x rev (DG/UX) links -lthread
 157 +       # with the switch -pthread
 158 +       if test "$arg" = "-pthread"; then
 159 +         case "$host" in
 160 +         i[3456]86-*-dgux*)
 161 +           deplibs="$deplibs $arg"
 162 +           continue
 163 +           ;;
 164 +         esac
 165 +       fi
 166 +       ;;
 167 +
 168        -l*)
 169         if test "$arg" = "-lc"; then
 170           case "$host" in
 171 -         *-*-cygwin* | *-*-mingw* | *-*-os2* | *-*-beos*)
 172 +         *-*-cygwin* | *-*-mingw* | *-*-os2* | *-*-beos* | i[3456]86-*-dgux*)
 173             # These systems don't actually have c library (as such)
 174 +           # It is wrong in DG/UX to add -lc when creating shared/dynamic objs/libs
 175             continue
 176             ;;
 177           esac
 178 @@ -1248,6 +1275,12 @@
 179           temp_deplibs=
 180           for deplib in $dependency_libs; do
 181             case "$deplib" in
 182 +           -thread*)
 183 +                temp_deplibs="$temp_deplibs $deplib"
 184 +                ;;
 185 +           -pthread)
 186 +                temp_deplibs="$temp_deplibs $deplib"
 187 +                ;;
 188             -R*) temp_xrpath=`$echo "X$deplib" | $Xsed -e 's/^-R//'`
 189                  case " $rpath $xrpath " in
 190                  *" $temp_xrpath "*) ;;
 191 @@ -1709,6 +1742,13 @@
 192           done
 193           ;;
 194
 195 +       dgux)
 196 +         # Leave mostly blank for DG/UX
 197 +         major=
 198 +         versuffix=".$current.$revision";
 199 +         verstring=
 200 +         ;;
 201 +
 202         linux)
 203           major=.`expr $current - $age`
 204           versuffix="$major.$age.$revision"
 205 @@ -1792,8 +1832,9 @@
 206
 207         dependency_libs="$deplibs"
 208         case "$host" in
 209 -       *-*-cygwin* | *-*-mingw* | *-*-os2* | *-*-beos*)
 210 +       *-*-cygwin* | *-*-mingw* | *-*-os2* | *-*-beos* | i[3456]86-*-dgux*)
 211           # these systems don't actually have a c library (as such)!
 212 +         # It is wrong in DG/UX to add -lc when creating shared/dynamic objs/libs
 213           ;;
 214         *)
 215           # Add libc to deplibs on all other systems.