cross compile changes for arm (#7)

cross compile changes for arm

tincan/build/config/BUILD.gn

@@ -357,7 +357,7 @@ config("compiler") {
     asmflags += cflags_c
   }
 
-  if (is_linux && is_clang && target_cpu == "x64"){
+  if (is_linux && is_clang) {
     defines += [
       # "USE_GLIB=1",
       # "USE_NSS_CERTS=1",
@@ -382,20 +382,18 @@ config("compiler") {
     ]    
     cflags += [
       "--param=ssp-buffer-size=4",
-      "-funwind-tables",
+      #"-funwind-tables",
       "-fmerge-all-constants",
-      "-fcrash-diagnostics-dir=../../tools/clang/crashreports",
+      #"-fcrash-diagnostics-dir=../../tools/clang/crashreports",
       "-Xclang",
       "-mllvm",
       "-Xclang",
       "-instcombine-lower-dbg-declare=0",
       "-fcomplete-member-pointers",
-      "-Wno-builtin-macro-redefined",
-
+      #"-Wno-builtin-macro-redefined",
       "-Xclang",
       "-fdebug-compilation-dir",
       "-Xclang",
-
       "-no-canonical-prefixes",
       "-Wall",
       "-Wextra",
@@ -431,10 +429,16 @@ config("compiler") {
     ]    
     ldflags += ["-rdynamic"]
     ldflags += ["-nostdlib++"]
+
+  if (target_cpu == "x64"){
     ldflags += ["-L../../../../external/debian_sid_amd64-sysroot/lib/x86_64-linux-gnu"]
     ldflags += ["-L../../../../external/debian_sid_amd64-sysroot/usr/lib/x86_64-linux-gnu"]
   }
-
+  if (target_cpu == "arm"){
+    ldflags += ["-L../../../../external/debian_sid_arm-sysroot/lib/arm-linux-gnueabihf"]
+    ldflags += ["-L../../../../external/debian_sid_arm-sysroot/usr/lib/arm-linux-gnueabihf"]
+  }
+ }
 }
 
 config("extra_flags") {

tincan/build/toolchain/gcc_toolchain.gni

@@ -5,6 +5,7 @@
 import("//build/config/sanitizers/sanitizers.gni")
 import("//build/toolchain/cc_wrapper.gni")
 import("//build/toolchain/toolchain.gni")
+import("//build/toolchain/clang.gni")
 
 # This template defines a toolchain for something that works like gcc
 # (including clang).
@@ -459,3 +460,37 @@ template("gcc_toolchain") {
     forward_variables_from(invoker, [ "deps" ])
   }
 }
+
+template("clang_toolchain") {
+if (defined(invoker.toolprefix)) {
+    toolprefix = invoker.toolprefix
+  } else {
+    toolprefix = ""
+  }
+
+  gcc_toolchain(target_name) {
+    prefix = rebase_path("$clang_base_path", root_build_dir)
+    cc = "$prefix/clang"
+    cxx = "$prefix/clang++"
+    ld = cxx
+    readelf = "${toolprefix}readelf"
+    ar = "${prefix}/llvm-ar"
+    nm = "${toolprefix}nm"
+
+    forward_variables_from(invoker,
+                           [
+                             "strip",
+                             "default_shlib_subdir",
+                             "enable_linker_map",
+                             "use_unstripped_as_runtime_outputs",
+                           ])
+
+    toolchain_args = {
+      if (defined(invoker.toolchain_args)) {
+        forward_variables_from(invoker.toolchain_args, "*")
+      }
+      is_clang = true
+    }
+  }
+
+}

tincan/build/toolchain/posix/BUILD.gn

@@ -1,6 +1,22 @@
 import("//build/toolchain/gcc_toolchain.gni")
 import("//build/toolchain/posix/settings.gni")
 
+clang_toolchain("clang_arm") {
+  toolprefix = "arm-linux-gnueabihf-"
+  toolchain_args = {
+    current_cpu = "arm"
+    current_os = target_os
+  }
+}
+
+clang_toolchain("clang_arm64") {
+  toolprefix = "aarch64-linux-gnu-"
+  toolchain_args = {
+    current_cpu = "arm64"
+    current_os = "linux"
+  }
+}
+
 gcc_toolchain("clang_x86") {
   cc = clang_cc
   cxx = clang_cxx
@@ -29,7 +45,7 @@ gcc_toolchain("x86") {
   toolchain_args = {
     current_cpu = "x86"
     current_os = target_os
-    is_clang = false
+    is_clang = true
   }
 }
 
@@ -61,66 +77,38 @@ gcc_toolchain("x64") {
   toolchain_args = {
     current_cpu = "x64"
     current_os = target_os
-    is_clang = false
+    is_clang = true
   }
 }
 
 gcc_toolchain("arm") {
-  cc = gcc_cc
-  cxx = gcc_cxx
-  ld = cxx
+ cc = arm_cc
+  cxx = arm_cxx
+  ar = arm_ar
 
-  readelf = readelf
-  ar = ar
-  nm = nm
+  ld = cxx
+  readelf = arm_readelf
+  nm = arm_nm
 
   toolchain_args = {
     current_cpu = "arm"
     current_os = target_os
-    is_clang = false
+    is_clang = true
   }
 }
 
 gcc_toolchain("arm64") {
-  cc = gcc_cc
-  cxx = gcc_cxx
-  ld = cxx
+  cc = arm64_cc
+  cxx = arm64_cxx
+  ar = arm64_ar
 
-  readelf = readelf
-  ar = ar
-  nm = nm
+  ld = cxx
+  readelf = arm64_readelf
+  nm = arm64_nm
 
   toolchain_args = {
     current_cpu = "arm64"
     current_os = target_os
-    is_clang = false
-  }
-}
-
-gcc_toolchain("clang_arm") {
-  cc = clang_cc
-  cxx = clang_cxx
-  ld = cxx
-
-  readelf = readelf
-  ar = ar
-  nm = nm
-  toolchain_args = {
-    current_cpu = "arm"
-    current_os = target_os
-  }
-}
-
-gcc_toolchain("clang_arm64") {
-  cc = clang_cc
-  cxx = clang_cxx
-  ld = cxx
-
-  readelf = readelf
-  ar = ar
-  nm = nm
-  toolchain_args = {
-    current_cpu = "arm64"
-    current_os = "linux"
+    is_clang = true
   }
 }

tincan/build/toolchain/posix/settings.gni

@@ -25,6 +25,21 @@ declare_args() {
 
   # Path of the 'nm' utility.
   nm = "nm"
+
+  arm64_toolprefix = "aarch64-linux-gnu-"
+  arm64_cc = "aarch64-linux-gnu-gcc"
+  arm64_cxx = "aarch64-linux-gnu-g++"
+  arm64_ar = "aarch64-linux-gnu-ar"
+  arm64_readelf = "aarch64-linux-gnu-readelf"
+  arm64_nm = "aarch64-linux-gnu-nm"
+
+  arm_toolprefix = "arm-linux-gnueabihf-"
+  arm_cc = "arm-linux-gnueabihf-gcc"
+  arm_cxx = "arm-linux-gnueabihf-g++"
+  arm_ar = "arm-linux-gnueabihf-ar"
+  arm_readelf = "arm-linux-gnueabihf-readelf"
+  arm_nm = "arm-linux-gnueabihf-nm"
+
 }
 
 if (is_clang && clang_cc == 0) {