[Issue 5278] gentoo's 'hardended' gcc doesn't work with dmd

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=5278



--- Comment #16 from Chad Joan <chadjoan at gmail.com> 2011-10-24 01:33:51 PDT ---
I'm afraid it doesn't seem to be working.

It went something like this:

chad at Hugin /mnt/bulk/dprojects/helloD2 $ ls
main.d
chad at Hugin /mnt/bulk/dprojects/helloD2 $ cat main.d
import std.stdio;

void main()
{
        writefln("hello world!");
}
chad at Hugin /mnt/bulk/dprojects/helloD2 $ dmd
DMD64 D Compiler v2.056
Copyright (c) 1999-2011 by Digital Mars written by Walter Bright
Documentation: http://www.digitalmars.com/d/2.0/index.html
Usage:
  dmd files.d ... { -switch }

  files.d        D source files
  @cmdfile       read arguments from cmdfile
  -c             do not link
  -cov           do code coverage analysis
  -D             generate documentation
  -Dddocdir      write documentation file to docdir directory
  -Dffilename    write documentation file to filename
  -d             allow deprecated features
  -debug         compile in debug code
  -debug=level   compile in debug code <= level
  -debug=ident   compile in debug code identified by ident
  -debuglib=name    set symbolic debug library to name
  -defaultlib=name  set default library to name
  -deps=filename write module dependencies to filename
  -fPIC          generate position independent code
  -g             add symbolic debug info
  -gc            add symbolic debug info, pretend to be C
  -gs            always emit stack frame
  -H             generate 'header' file
  -Hddirectory   write 'header' file to directory
  -Hffilename    write 'header' file to filename
  --help         print help
  -Ipath         where to look for imports
  -ignore        ignore unsupported pragmas
  -inline        do function inlining
  -Jpath         where to look for string imports
  -Llinkerflag   pass linkerflag to link
  -lib           generate library rather than object files
  -man           open web browser on manual page
  -map           generate linker .map file
  -noboundscheck turns off array bounds checking for all functions
  -nofloat       do not emit reference to floating point
  -O             optimize
  -o-            do not write object file
  -odobjdir      write object & library files to directory objdir
  -offilename    name output file to filename
  -op            do not strip paths from source file
  -profile       profile runtime performance of generated code
  -property      enforce property syntax
  -quiet         suppress unnecessary messages
  -release       compile release version
  -run srcfile args...   run resulting program, passing args
  -unittest      compile in unit tests
  -v             verbose
  -version=level compile in version code >= level
  -version=ident compile in version code identified by ident
  -vtls          list all variables going into thread local storage
  -w             enable warnings
  -wi            enable informational warnings
  -X             generate JSON file
  -Xffilename    write JSON file to filename
chad at Hugin /mnt/bulk/dprojects/helloD2 $ dmd main.d -ofmain
/usr/lib/gcc/x86_64-pc-linux-gnu/4.4.5/../../../../x86_64-pc-linux-gnu/bin/ld:
main.o: relocation R_X86_64_32 against `.data' can not be used when making a
shared object; recompile with -fPIC
main.o: could not read symbols: Bad value
collect2: ld returned 1 exit status
--- errorlevel 1
chad at Hugin /mnt/bulk/dprojects/helloD2 $ ls
main.d  main.o
chad at Hugin /mnt/bulk/dprojects/helloD2 $ dmd main.d -ofmain -m32
/usr/lib/gcc/x86_64-pc-linux-gnu/4.4.5/../../../../x86_64-pc-linux-gnu/bin/ld:
warning: creating a DT_TEXTREL in object.
chad at Hugin /mnt/bulk/dprojects/helloD2 $ ls
main  main.d  main.o
chad at Hugin /mnt/bulk/dprojects/helloD2 $ main
main: error while loading shared libraries: cannot make segment writable for
relocation: Permission denied
chad at Hugin /mnt/bulk/dprojects/helloD2 $ sudo paxctl -m main
chad at Hugin /mnt/bulk/dprojects/helloD2 $ main
Segmentation fault
chad at Hugin /mnt/bulk/dprojects/helloD2 $ ls
main  main.d  main.o
chad at Hugin /mnt/bulk/dprojects/helloD2 $


(I don't have any other 2.056 D compilers on my system; so the part where I ran
dmd to get the help text should confirm that the correct compiler is in use.)

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