sqlite3-gem编译错误

Question

我正试图在OSX Mavericks上安装sqlite3-gem，但遇到了一个似乎很难解决的错误。通过谷歌搜索，我没有找到其他有同样问题的人。

基本上，当我运行geminstall命令时，会发生以下情况：

Building native extensions.  This could take a while...
ERROR:  Error installing sqlite3:
ERROR: Failed to build gem native extension.
/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/bin/ruby extconf.rb
checking for sqlite3.h... yes
checking for sqlite3_libversion_number() in -lsqlite3... yes
checking for rb_proc_arity()... yes
checking for rb_integer_pack()... no
checking for sqlite3_initialize()... yes
checking for sqlite3_backup_init()... yes
checking for sqlite3_column_database_name()... no
checking for sqlite3_enable_load_extension()... no
checking for sqlite3_load_extension()... no
checking for sqlite3_open_v2()... yes
checking for sqlite3_prepare_v2()... yes
checking for sqlite3_int64 in sqlite3.h... yes
checking for sqlite3_uint64 in sqlite3.h... yes
creating Makefile
make "DESTDIR="
compiling backup.c
compiling database.c
database.c:300:1: warning: control may reach end of non-void function [-Wreturn-type]
}
^
1 warning generated.
compiling exception.c
compiling sqlite3.c
compiling statement.c
linking shared-object sqlite3/sqlite3_native.bundle
clang: error: unknown argument: '-multiply_definedsuppress' [-Wunused-command-line-argument-hard-error-in-future]
clang: note: this will be a hard error (cannot be downgraded to a warning) in the future
make: *** [sqlite3_native.bundle] Error 1

Gem files will remain installed in /Library/Ruby/Gems/2.0.0/gems/sqlite3-1.3.9 for inspection.
Results logged to /Library/Ruby/Gems/2.0.0/gems/sqlite3-1.3.9/ext/sqlite3/gem_make.out

我不知道clang是什么，但gem似乎在传递一个可能被否决或其他什么的论点？有人对这些东西有更多的了解吗？

Answer 1

Mavericks中XCode的新版本显然附带了一个编译器，该编译器将未知的传递参数视为错误。

要解决此问题，请将环境变量设置为ARCHFLAGS=-Wno-error=unused-command-line-argument-hard-error-in-future，以便将错误降级为警告。

所以要安装sqlite3-gem:

ARCHFLAGS=-Wno-error=unused-command-line-argument-hard-error-in-future gem install sqlite3

参考：http://bruteforce.gr/bypassing-clang-error-unknown-argument.html