iOS || Build issue

Hi All,
To build the iOS framework I am executing the below command but getting the 
below error please find attached screenshot. Please let me know if I am 
doing anything wrong.

Executing commands on mac machine:

1. git clone https://github.com/weidai11/cryptopp.git

2. cd cryptopp

3. Drag and drop *setenv-ios.sh* file inside cryptopp folder

4. IOS_SDK=iPhoneOS IOS_CPU=arm64 source ./setenv-ios.sh 

5. make -f GNUmakefile-cross
The error, I am getting after executing the* make -f GNUmakefile-cross *
command.
[image: Screenshot 2021-10-25 at 4.57.02 PM.png]

*Tried on the below configuration :*
Xcode 12.5.1
Mac OS Big Sur.

Xcode 12.4
Mac OS Catalina


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