1 files changed, 110 insertions, 0 deletions
diff --git a/odb/build/root.build b/odb/build/root.build
new file mode 100644
index 0000000..86a02a0
--- /dev/null
+++ b/odb/build/root.build
@@ -0,0 +1,110 @@
+# file      : build/root.build
+# license   : GNU GPL v3; see accompanying LICENSE file
+
+# This configuration variable can be used to specify the GCC plugin directory
+# instead of auto-discovering it with -print-file-name=plugin. Primarily
+# useful when dealing with cross-compilation.
+#
+config [dir_path, config.report.variable=plugin_dir] \
+  config.odb.plugin_dir ?= [null]
+
+# This configuration variable can be used to specify the GCC g++ executable
+# name that will be called by the ODB compiler instead of auto-deriving it
+# from config.cxx. Primarily useful when dealing with cross-compilation.
+#
+config [string, config.report.variable=gxx_name] \
+  config.odb.gxx_name ?= [null]
+
+config [bool] config.odb.develop ?= false
+
+develop = $config.odb.develop
+
+define cli: file
+cli{*}: extension = cli
+
+cxx.std = latest
+
+using cxx
+
+hxx{*}: extension = hxx
+ixx{*}: extension = ixx
+txx{*}: extension = txx
+cxx{*}: extension = cxx
+
+if ($cxx.target.system == 'win32-msvc')
+  cxx.poptions += -D_CRT_SECURE_NO_WARNINGS -D_SCL_SECURE_NO_WARNINGS
+
+if ($cxx.class == 'msvc')
+  cxx.coptions += /wd4251 /wd4275 /wd4800
+
+cxx.poptions =+ "-I$out_root" "-I$src_root"
+
+# Specify the test target for cross-testing.
+#
+test.target = $cxx.target
+
+# Omit the rest during the skeleton load.
+#
+if ($build.mode != 'skeleton')
+{
+  if ($cxx.id != 'gcc')
+    fail 'ODB compiler can only be built with GCC'
+
+  # Determine the GCC plugin directory unless specified explicitly.
+  #
+  if ($config.odb.plugin_dir != [null])
+    plugin_dir = $config.odb.plugin_dir
+  else
+  {
+    # If plugin support is disabled, then -print-file-name will print the name
+    # we have passed (the real plugin directory will always be absolute).
+    #
+    plugin_dir = [dir_path] $process.run($cxx.path -print-file-name=plugin)
+
+    if ("$plugin_dir" == plugin)
+      fail "$recall($cxx.path) does not support plugins"
+  }
+
+  # It can also include '..' components (e.g., on Windows) so normalize it for
+  # good measure.
+  #
+  plugin_dir = $normalize($plugin_dir)
+
+  # Determine the g++ executable name unless specified explicitly.
+  #
+  if ($config.odb.gxx_name != [null])
+    gxx_name = $config.odb.gxx_name
+  else
+  {
+    # Unless cross-compiling, pass the C++ compiler's recall path as the g++
+    # name.
+    #
+    # Note that we used to compare complete target triplets but that prooved
+    # too strict. For example, we may be running on x86_64-apple-darwin17.7.0
+    # while the compiler is targeting x86_64-apple-darwin17.3.0.
+    #
+    if ($cxx.target.cpu    == $build.host.cpu && \
+        $cxx.target.system == $build.host.system)
+    {
+      gxx_name = $recall($cxx.path)
+    }
+    else
+      fail "g++ executable name must be specified explicitly with \
+config.odb.gxx_name when cross-compiling"
+  }
+
+  # Extract the copyright notice from the LICENSE file.
+  #
+  # Note that cat is a builtin which means this is both portable and fast.
+  #
+  copyright = $process.run_regex(cat $src_root/LICENSE,    \
+                                 'Copyright \(c\) (.+)\.', \
+                                 '\1')
+}
+else
+{
+  # Set for report.
+  #
+  plugin_dir = [null]
+  gxx_name = [null]
+}