Add libunwind component

.orchestra/config/components.yml

@@ -5,6 +5,7 @@
 #@ load("/components/mpc.lib.yml", "mpc_component")
 #@ load("/components/mpfr.lib.yml", "mpfr_component")
 #@ load("/components/cmake.lib.yml", "cmake_component")
+#@ load("/components/libunwind.lib.yml", "libunwind_component")
 #@ load("/components/llvm.lib.yml", "llvm_component")
 #@ load("/components/llvm_documentation.lib.yml", "llvm_documentation_component")
 #@ load("/components/llvmcpy.lib.yml", "llvmcpy_component")
@@ -44,6 +45,7 @@ components:
   mpc: #@ mpc_component
   mpfr: #@ mpfr_component
   cmake: #@ cmake_component
+  libunwind: #@ libunwind_component
   llvm: #@ llvm_component
   llvm-documentation: #@ llvm_documentation_component
   llvmcpy: #@ llvmcpy_component

.orchestra/config/components/boost.lib.yml

@@ -28,6 +28,7 @@ builds:
     dependencies:
       - clang-release
       - toolchain/host/gcc
+      - libunwind
 #@ end
 
 ---

.orchestra/config/components/clang_release.lib.yml

@@ -43,6 +43,7 @@ builds:
     dependencies:
       - toolchain/host/gcc
       - toolchain/host/binutils
+      - libunwind
 #@ end
 
 ---

.orchestra/config/components/libunwind.lib.yml

+#@ load("/lib/create_component.lib.yml", "single_build_component")
+
+#@ load("/global_options.lib.yml", "options")
+
+#@ source_url = "https://download.savannah.nongnu.org/releases/libunwind/libunwind-1.4.0.tar.gz"
+
+#@yaml/text-templated-strings
+---
+#@ def _libunwind_args():
+configure: |
+  mkdir -p "$BUILD_DIR"
+  extract.sh --into "$BUILD_DIR" (@= source_url @)
+  cd "$BUILD_DIR"
+  export CC="cc -fcommon"
+  ./configure \
+    --enable-cxx-exceptions \
+    --disable-coredump \
+    --disable-ptrace \
+    --enable-setjmp \
+    --disable-debug-frame \
+    --disable-documentation \
+    --disable-minidebuginfo \
+    --disable-static \
+    --disable-conservative_checks \
+    --disable-debug \
+    --prefix="$ORCHESTRA_ROOT" \
+    CFLAGS="" \
+    LDFLAGS="(@= options["modern_linker_flags"] @) -Wl,-rpath,$RPATH_PLACEHOLDER/lib"
+build_system: make
+dependencies:
+  - toolchain/host/gcc
+#@ end
+
+---
+
+#@ libunwind_component = single_build_component(**_libunwind_args())

.orchestra/config/components/llvm.lib.yml

@@ -31,6 +31,7 @@ builds:
       dependencies:
         - toolchain/host/gcc
         - clang-release
+        - libunwind
   #@ end
 #@ end