Add support for FreeBSD

Port the OpenMP runtime to FreeBSD along with associated build system changes.

Also begin to generalize affinity capabilities so they aren't tied explicitly
to Windows and Linux.

The port builds with stock clang and gmake and has no additional runtime
dependencies.

All but a handful of the validation suite tests are now passing on FreeBSD 10
x86_64.

llvm-svn: 202478

4 files changed, 24 insertions, 3 deletions

diff --git a/openmp/runtime/tools/common.inc b/openmp/runtime/tools/common.inc
index 8eceb98e9b0..db13251672d 100644
--- a/openmp/runtime/tools/common.inc
+++ b/openmp/runtime/tools/common.inc
@@ -26,6 +26,9 @@ ifndef omp_os
   ifeq ($(OS), Linux)
     export omp_os=linux
   endif
+  ifeq ($(OS), FreeBSD)
+    export omp_os=freebsd
+  endif
   ifeq ($(OS), Darwin)
     export omp_os=macos
   endif
diff --git a/openmp/runtime/tools/freebsd.inc b/openmp/runtime/tools/freebsd.inc
new file mode 100644
index 00000000000..add7fe9d46d
--- /dev/null
+++ b/openmp/runtime/tools/freebsd.inc
@@ -0,0 +1,13 @@
+#
+#//===----------------------------------------------------------------------===//
+#//
+#//                     The LLVM Compiler Infrastructure
+#//
+#// This file is dual licensed under the MIT and the University of Illinois Open
+#// Source Licenses. See LICENSE.txt for details.
+#//
+#//===----------------------------------------------------------------------===//
+#
+
+include tools/linux.inc
+
diff --git a/openmp/runtime/tools/lib/Platform.pm b/openmp/runtime/tools/lib/Platform.pm
index d723174a29e..5b399f73866 100644
--- a/openmp/runtime/tools/lib/Platform.pm
+++ b/openmp/runtime/tools/lib/Platform.pm
@@ -170,6 +170,9 @@ sub target_options() {
     if ( 0 ) {
     } elsif ( $operating_system eq "GNU/Linux" ) {
         $_host_os = "lin";
+    } elsif ( $operating_system eq "FreeBSD" ) {
+        # Host OS resembles Linux.
+        $_host_os = "lin";
     } elsif ( $operating_system eq "Darwin" ) {
         $_host_os = "mac";
     } elsif ( $operating_system eq "MS Windows" ) {
diff --git a/openmp/runtime/tools/lib/Uname.pm b/openmp/runtime/tools/lib/Uname.pm
index 4eb6991f273..e212501e6db 100644
--- a/openmp/runtime/tools/lib/Uname.pm
+++ b/openmp/runtime/tools/lib/Uname.pm
@@ -139,11 +139,11 @@ $values{ processor } = $values{ machine };
 
 # hardware_platform.
 if ( 0 ) {
-} elsif ( $^O eq "linux" ) {
+} elsif ( $^O eq "linux" or $^O eq "freebsd" ) {
     if ( 0 ) {
     } elsif ( $values{ machine } =~ m{\Ai[3456]86\z} ) {
         $values{ hardware_platform } = "i386";
-    } elsif ( $values{ machine } =~ m{\Ax86_64\z} ) {
+    } elsif ( $values{ machine } =~ m{\A(x86_64|amd64)\z} ) {
         $values{ hardware_platform } = "x86_64";
     } elsif ( $values{ machine } =~ m{\Aarmv7\D*\z} ) {
         $values{ hardware_platform } = "arm";
@@ -370,8 +370,10 @@ if ( 0 ) {
     # $values{ operating_system_update  } = $os_name[ 1 ];
 } elsif ( $values{ kernel_name } =~ m{\ACYGWIN_NT-} ) {
     $values{ operating_system } = "MS Windows";
+} elsif ( $values{ kernel_name } =~ m{\AFreeBSD} ) {
+    $values{ operating_system } = "FreeBSD";
 } else {
-    die "Unsuppoprted kernel_name (\"$values{ kernel_name }\") returned by POSIX::uname(); stopped";
+    die "Unsupported kernel_name (\"$values{ kernel_name }\") returned by POSIX::uname(); stopped";
 }; # if
 
 # host_name and domain_name