/usr/local/opt/v8@3.15/include/v8.h:98:1: error: unknown type name 'namespace'
ahuigo opened this issue · 4 comments
I failed to install therubyracer. My env is:
Mac osx: Catalina 10.15.2
Ruby: ruby 2.6.3p62 (2019-04-16 revision 67580) [universal.x86_64-darwin19]
clang version 11.0.3 (clang-1103.0.32.59)
Here is output:
$ sudo gem install therubyracer -v '0.12.3' -- --with-v8-dir=/usr/local/opt/v8@3.15
....
ERROR: Failed to build gem native extension.
......
To see why this extension failed to compile, please check the mkmf.log which can be found here:
/Library/Ruby/Gems/2.6.0/extensions/universal-darwin-19/2.6.0/therubyracer-0.12.3/mkmf.log
extconf failed, exit code 1
....
$ cat /Library/Ruby/Gems/2.6.0/extensions/universal-darwin-19/2.6.0/therubyracer-0.12.3/mkmf.log
--------------------
find_header: checking for v8.h... -------------------- no
"xcrun clang -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/include/ruby-2.6.0/universal-darwin19 -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/include/ruby-2.6.0/ruby/backward -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/include/ruby-2.6.0 -I. -I/usr/local/opt/v8@3.15/include -I/usr/local/opt/v8@3.15/include -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -D_DARWIN_UNLIMITED_SELECT -D_REENTRANT -Wall -g -rdynamic -g -Os -pipe -DHAVE_GCC_ATOMIC_BUILTINS -arch x86_64 -c conftest.c"
clang: warning: argument unused during compilation: '-rdynamic' [-Wunused-command-line-argument]
In file included from conftest.c:3:
/usr/local/opt/v8@3.15/include/v8.h:98:1: error: unknown type name 'namespace'
namespace v8 {
^
/usr/local/opt/v8@3.15/include/v8.h:98:13: error: expected ';' after top level declarator
namespace v8 {
^
;
2 errors generated.
checked program was:
/* begin */
1: #include "ruby.h"
2:
3: #include <v8.h>
/* end */
--------------------
$ gsed -n '95,100p' /usr/local/opt/v8@3.15/include/v8.h
/**
* The v8 JavaScript engine.
*/
namespace v8 {
class Context;
Related issue: #455
This error relates the command :
"xcrun clang -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/include/ruby-2.6.0/universal-darwin19 -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/include/ruby-2.6.0/ruby/backward -I/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/include/ruby-2.6.0 -I. -I/usr/local/opt/v8@3.15/include -I/usr/local/opt/v8@3.15/include -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -D_DARWIN_UNLIMITED_SELECT -D_REENTRANT -Wall -g -rdynamic -g -Os -pipe -DHAVE_GCC_ATOMIC_BUILTINS -arch x86_64 -c conftest.c"
clang: warning: argument unused during compilation: '-rdynamic' [-Wunused-command-line-argument]
In file included from conftest.c:3:
/usr/local/opt/v8@3.15/include/v8.h:98:1: error: unknown type name 'namespace'
Getting the same error and nothing is helping. Tried the method that involves the --with-v8-dir=/usr/local/opt/v8@3.15 flag and I'm still getting the same message.
Also set the following options in my .zshrc file
export CXX=clang++
export GYPFLAGS=-Dmac_deployment_target=10.15
Ok fixed it by installing both v8 & theruby racer with bundler and instead of running bundle config build.libv8 --with-system-v8 which is what every instruction here told me, I ran bundle config build.libv8 --with-cxx=clang++
So the full ~/.bundle/config is
---
BUNDLE_BUILD__LIBV8: "--with-cxx=clang++"
BUNDLE_BUILD__THERUBYRACER: "--with-v8-dir=/usr/local/opt/v8@3.15"
You can also maybe add --with-v8-include and --with-v8-lib options to the 2nd line which is what I also had but I don't think those are necessary.
Sorry but this gem is unmaintained, so I will close this issue.
We recommend going with mini_racer + libv8-node. If you feel the issue is still relevant to either of those, please open an issue over there!