Configurations/shared-info.pl

   1 #! /usr/bin/env perl
   2 # -*- mode: perl; -*-
   3 # Copyright 2016-2020 The OpenSSL Project Authors. All Rights Reserved.
   4 #
   5 # Licensed under the Apache License 2.0 (the "License").  You may not use
   6 # this file except in compliance with the License.  You can obtain a copy
   7 # in the file LICENSE in the source distribution or at
   8 # https://www.openssl.org/source/license.html
   9
  10 # This is a collection of extra attributes to be used as input for creating
  11 # shared libraries, currently on any Unix variant, including Unix like
  12 # environments on Windows.
  13
  14 sub detect_gnu_ld {
  15     my @lines =
  16         `$config{CROSS_COMPILE}$config{CC} -Wl,-V /dev/null 2>&1`;
  17     return grep /^GNU ld/, @lines;
  18 }
  19 sub detect_gnu_cc {
  20     my @lines =
  21         `$config{CROSS_COMPILE}$config{CC} -v 2>&1`;
  22     return grep /gcc/, @lines;
  23 }
  24
  25 my %shared_info;
  26 %shared_info = (
  27     'gnu-shared' => {
  28         shared_ldflag         => '-shared -Wl,-Bsymbolic',
  29         shared_sonameflag     => '-Wl,-soname=',
  30     },
  31     'linux-shared' => sub {
  32         return {
  33             %{$shared_info{'gnu-shared'}},
  34             shared_defflag    => '-Wl,--version-script=',
  35             dso_ldflags       =>
  36                 (grep /(?:^|\s)-fsanitize/,
  37                  @{$config{CFLAGS}}, @{$config{cflags}})
  38                 ? ''
  39                 : '-Wl,-z,defs',
  40         };
  41     },
  42     'bsd-gcc-shared' => sub { return $shared_info{'linux-shared'}; },
  43     'darwin-shared' => {
  44         module_ldflags        => '-bundle',
  45         shared_ldflag         => '-dynamiclib -current_version $(SHLIB_VERSION_NUMBER) -compatibility_version $(SHLIB_VERSION_NUMBER)',
  46         shared_sonameflag     => '-install_name $(INSTALLTOP)/$(LIBDIR)/',
  47     },
  48     'cygwin-shared' => {
  49         shared_ldflag         => '-shared -Wl,--enable-auto-image-base',
  50         shared_impflag        => '-Wl,--out-implib=',
  51     },
  52     'mingw-shared' => sub {
  53         return {
  54             %{$shared_info{'cygwin-shared'}},
  55             # def_flag made to empty string so it still generates
  56             # something
  57             shared_defflag    => '',
  58         };
  59     },
  60     'alpha-osf1-shared' => sub {
  61         return $shared_info{'gnu-shared'} if detect_gnu_ld();
  62         return {
  63             module_ldflags    => '-shared -Wl,-Bsymbolic',
  64             shared_ldflag     => '-shared -Wl,-Bsymbolic -set_version $(SHLIB_VERSION_NUMBER)',
  65         };
  66     },
  67     'svr3-shared' => sub {
  68         return $shared_info{'gnu-shared'} if detect_gnu_ld();
  69         return {
  70             shared_ldflag     => '-G',
  71             shared_sonameflag => '-h ',
  72         };
  73     },
  74     'svr5-shared' => sub {
  75         return $shared_info{'gnu-shared'} if detect_gnu_ld();
  76         return {
  77             shared_ldflag     => detect_gnu_cc() ? '-shared' : '-G',
  78             shared_sonameflag => '-h ',
  79         };
  80     },
  81     'solaris-gcc-shared' => sub {
  82         return $shared_info{'linux-shared'} if detect_gnu_ld();
  83         return {
  84             # Note: we should also have -shared here, but because some
  85             # config targets define it with an added -static-libgcc
  86             # following it, we don't want to change the order.  This
  87             # forces all solaris gcc config targets to define shared_ldflag
  88             shared_ldflag     => '-Wl,-Bsymbolic',
  89             shared_defflag    => "-Wl,-M,",
  90             shared_sonameflag => "-Wl,-h,",
  91         };
  92     },
  93 );