好像此问题已在Xcode 8.0(测试版4)中得到解决..因此，您无需尝试遵循以下内容.

Looks like this issue has been fixed in Xcode 8.0 (beta 4).. So you don't need to try following stuff.

当构建同时包含swift和objc标头时，Xcode似乎与Toolchain目录路径混淆了.

Issue seems to be with Xcode was getting confused with Toolchain directory path, when build includes both swift and objc headers.

一种解决方法是

1. 修补SDK头文件以与编译器一起使用(愚蠢的事情不喜欢新的标题！)或
2. 使用旧的头文件(其中很棒，但是有些东西不再起作用/存在了！)或
3. 在Makefile中使用以下设置以避免警告和编译和链接时出现错误:

CC =/usr/bin/clang

CC=/usr/bin/clang

CFLAGS = -fsigned-char -g -ObjC -fobjc-exceptions \-Wall -Wundeclared选择器-Wreturn类型-Wnested-externs \-多余的决定\-不良功能播报\-Wchar下标\-Winline -Wswitch -Wshadow \-I/var/include \-I/var/include/gcc/darwin/4.0 \-D_CTYPE_H_ \-D_BSD_ARM_SETJMP_H \-D_UNISTD_H _

CFLAGS=-fsigned-char -g -ObjC -fobjc-exceptions \ -Wall -Wundeclared-selector -Wreturn-type -Wnested-externs \ -Wredundant-decls \ -Wbad-function-cast \ -Wchar-subscripts \ -Winline -Wswitch -Wshadow \ -I/var/include \ -I/var/include/gcc/darwin/4.0 \ -D_CTYPE_H_ \ -D_BSD_ARM_SETJMP_H \ -D_UNISTD_H_

CPPFLAGS =

CPPFLAGS=

LD = $(CC)

LD=$(CC)

LDFLAGS = -lobjc \-F/系统/库/框架\框架CoreFoundation \-框架基金会\-framework UIKit \框架CoreGraphics \-L/usr/lib -lc/usr/lib/libgcc_s.1.dylib \-bind_at_load \-multiply_defined抑制

LDFLAGS=-lobjc \ -F/System/Library/Frameworks \ -framework CoreFoundation \ -framework Foundation \ -framework UIKit \ -framework CoreGraphics \ -L/usr/lib -lc /usr/lib/libgcc_s.1.dylib \ -bind_at_load \ -multiply_defined suppress