Cannot install the library

[The Vinh Luong]

Hi, I tried to install the library with `make -f GNUmakefile-cross install PREFIX=/Users/luongvinh/cryptopp/ios-i386` on macOS Monterey 12.5.1 after succeeded in building the library for ios-i386 but ends up with the following error
```
Using testing flags: -DNDEBUG -g2 -O3 -fPIC -pipe
c++ -DNDEBUG -g2 -O3 -fPIC -pipe -c aria_simd.cpp
In file included from aria_simd.cpp:9:
In file included from ./pch.h:14:
In file included from ./config.h:22:
In file included from ./config_align.h:27:
In file included from ./config_cxx.h:37:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/string:506:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/string_view:175:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/__string:57:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/algorithm:641:
In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/cstring:60:
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/string.h:60:15: fatal error: 'string.h' file not found
#include_next <string.h>
              ^~~~~~~~~~
1 error generated.
make: *** [aria_simd.o] Error 1
```
Could you guys help me out? Thanks!

[Jeffrey Walton]

It looks like the compiler cannot find its C++ header files.

You may want to take a look at
https://www.cryptopp.com/wiki/IOS_(Command_Line) .

Jeff
Jeff

[The Vinh Luong]

Thank you. After some research, I realized that running `GNUmakefile-cross` with sudo make it cannot read the env variabls which were exported when running `setenv-ios.sh`. This leads to the above error. The solution is to run 'GNUmakefile-cross' without sudo.

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[The Vinh Luong]

That's why I think the wiki need to change (https://www.cryptopp.com/wiki/IOS_(Command_Line)), since the `make install` in there is using sudo.

[Jeffrey Walton]

On Sat, Sep 10, 2022 at 12:22 PM The Vinh Luong
<ltv.luon...@gmail.com> wrote:
>
> Thank you. After some research, I realized that running `GNUmakefile-cross` with sudo make it cannot read the env variabls which were exported when running `setenv-ios.sh`. This leads to the above error. The solution is to run 'GNUmakefile-cross' without sudo.

You should use `sudo -E` if you need the sudo user's environment.

Jeff

[The Vinh Luong]

That works, thanks Jeff!

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