Mobile-ffmpeg: [IOS] build failure, libiconv!!

[krislyy]

Description
I use command "./ios.sh --enable-libass --disable-armv7 --disable-armv7s --disable-i386" to build libass.a.
but failed in building libiconv.a. like the log shows below. I think it's problem of system environment.

Logs
'''
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.2.sdk/usr/include/sys/_types/_uid_t.h:31:3131make[2]: * [allocator.o] Error 1
: make[2]: : * Waiting for unfinished jobs....error: error
cannot combine with previous 'type-name' declaration specifier
: typedef __darwin_uid_t uid_t;
^cannot combine with previous 'type-name' declaration specifier

../config.h:1162typedef __darwin_uid_t uid_t;
^
:15:../config.h:1162 note: expanded from macro 'uid_t'
:15#define uid_t int
: note: expanded from macro 'uid_t'
^#define uid_t int
^

3 errors generated.
make[2]: * [areadlink.o] Error 1
3 errors generated.
3 errors generated.
make[2]: [careadlinkat.o] Error 1
make[2]: [binary-io.o] Error 1
make[1]: [all] Error 2
make: [all] Error 2
'''
**Environment

• Platform: [IOS]
• Architecture: [arm64, x86_64]
• Source branch (if applicable) [master]
• Xcode version (if applicable) [12.2, 10.2]

Other
Add any other context about the problem here.

[tanersener]

This is compatibility issue about Xcode 10.2. Until I publish a fix, you can install /Library/Developer/CommandLineTools/Packages/macOS_SDK_headers_for_macOS_10.14.pkg package as a workaround.

[krislyy]

I fixed the issue by reinstalling ../macOS_SDK_headers_for_macOS_10.14.pkg. Thanks a lot.

[tanersener]

Fixed in development branch

[tanersener]

This issue is fixed in master too. Can we close it?

[krislyy]

absolutely, yes!