Add -latomic to threads enabled 32bit linux builds

It might not be necessary with the most recent toolchain versions
but apparently many 32bit linux architectures and commonly used
toolchain versions require this.

It is also harmless to include even on architectures that do not
need it.

Fixes #14083

Reviewed-by: Paul Dale <pauli@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/15086)

diff --git a/Configurations/10-main.conf b/Configurations/10-main.conf
index 1e53f20861830d0f813fdaa8f62888e46f62b6e8..8427a561e36869fa645ae856d0eb6687ec735eed 100644 (file)
--- a/Configurations/10-main.conf
+++ b/Configurations/10-main.conf
@@ -675,7 +675,7 @@ my %targets = (
 ####
 # *-generic* is endian-neutral target, but ./config is free to
 # throw in -D[BL]_ENDIAN, whichever appropriate...
-    "linux-generic32" => {
+    "linux-generic" => {
         inherit_from     => [ "BASE_unix" ],
         CC               => "gcc",
         CXX              => "g++",
@@ -697,8 +697,13 @@ my %targets = (
         shared_ldflag    => sub { $disabled{pinshared} ? () : "-Wl,-znodelete" },
         enable           => [ "afalgeng" ],
     },
+    "linux-generic32" => {
+        inherit_from     => [ "linux-generic" ],
+        ex_libs          => add(threads("-latomic")),
+        bn_ops           => "BN_LLONG RC4_CHAR",
+    },
     "linux-generic64" => {
-        inherit_from     => [ "linux-generic32" ],
+        inherit_from     => [ "linux-generic" ],
         bn_ops           => "SIXTY_FOUR_BIT_LONG RC4_CHAR",
     },
 
@@ -945,6 +950,7 @@ my %targets = (
         cflags           => add("-m64 -mcpu=ultrasparc"),
         cxxflags         => add("-m64 -mcpu=ultrasparc"),
         lib_cppflags     => add("-DB_ENDIAN"),
+        ex_libs          => add(threads("-latomic")),
         bn_ops           => "BN_LLONG RC4_CHAR",
         asm_arch         => 'sparcv9',
         perlasm_scheme   => 'void',