I need ICU library for iPhone. I have tried to build it from souce, however, I am getting this erros:
clang++ ... /Users/petr/Development/icu-cross-compile-master/icu-60-2/source/tools/pkgdata/pkgdata.cpp
/Users/petr/Development/icu-cross-compile-master/icu-60-2/source/tools/pkgdata/pkgdata.cpp:544:18: error: call to unavailable function 'system': not available on iOS
int result = system(cmd);
^~~~~~
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS11.2.sdk/usr/include/stdlib.h:195:6: note: candidate function has been explicitly made unavailable
int system(const char *) __DARWIN_ALIAS_C(system);
sh ${ICU_SOURCE}/configure --host=arm-apple-darwin --with-cross-build=${PREBUILD_DIR} ${PREFIX}
My PREFIX configuration is as:
--enable-extras=yes
--enable-tools=yes
--enable-icuio=yes
--enable-strict=no
--enable-static
--enable-shared=no
--enable-tests=yes
--disable-renaming
--enable-samples=no
--enable-dyload=no
--with-data-packaging=static
Or is there any other way, how to generate libicudata.a? The similar build script works OK for Android, Mac and Win. Only iPhone is problem.
The problem is that system() is deprecated for iOS 11.
I think quick fix for you will be in using Xcode 6, instead of Xcode 9, so you can compile for iOS 7 as a target, where system() wasn't deprecated.
Or, if you really need iOS full compatible solution, you need to re-write ICU source code to use posix spawn functionality instead of system(). Check this answer for more details: How do you use posix_spawn to replace the deprecated 'system' to launch opendiff in Objective-C?