xcode 9.4.1(ios 11.4 sdk) build error: call to unavailable function 'system': not available on iOS 11.4 sdk

[holyswordman]

My-Mac:classdump-dyld user123$ make

Making all for tool classdump-dyld…
==> Preprocessing main.xm…
==> Compiling main.xm (armv7)…
*main.xm:313:4: error: call to unavailable function 'system': not available on iOS
system([tryWithLib UTF8String]);
^~~~~~
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS11.4.sdk/usr/include/stdlib.h:195:6: note: candidate function has
been explicitly made unavailable
int system(const char ) __DARWIN_ALIAS_C(system);
^
1 error generated.
make[3]: *** [/Users/user123/Documents/classdump-dyld/.theos/obj/debug/armv7/main.xm.5c0a3bf6.o] Error 1
make[2]: *** [/Users/user123/Documents/classdump-dyld/.theos/obj/debug/armv7/classdump-dyld] Error 2
make[1]: *** [internal-tool-all_] Error 2
make: *** [classdump-dyld.all.tool.variables] Error 2
My-Mac:classdump-dyld user123$

[Inc0n]

use posix_spawn instead