Handling third party build error on react-native 0.46x.

You may got an below build failed error messages with ‘react-native run-ios’.

• `boost/iterator/iterator_adaptor.hpp’ file not found`
• `An error was encountered processing the command (domain=NSPOSIXErrorDomain, code=2)`
• or any error related with ‘third-party’ : glog, boost, folly.

With the react-native 0.46x, it uses four third party library for ios build. These files are downloaded from github with curl command.

The problem is from the curl command and pressing ctrl + c key by user.

In the build phase, the react-native script trying to download the third party lib via curl command like below.

/bin/sh -c /Volumes/Data/Workspace/react_native/AwesomeProjectN/ios/build/Build/Intermediates/React.build/Debug-iphonesimulator/double-conversion.build/Script-190EE32F1E6A43DE00A8543A.sh
% Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
Dload  Upload   Total   Spent    Left  Speed
100   119    0   119    0     0     14      0 --:--:--  0:00:08 --:--:--    28
100  510k  100  510k    0     0  52938      0  0:00:09  0:00:09 --:--:--  353k
curl: Saved to filename 'glog-0.3.4.tar.gz'
% Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
Dload  Upload   Total   Spent    Left  Speed
100   132    0   132    0     0    156      0 --:--:-- --:--:-- --:--:--   156
100 6847k  100 6847k    0     0   131k      0  0:00:52  0:00:52 --:--:--  139k
curl: Saved to filename 'double-conversion-1.1.5.tar.gz'
% Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
Dload  Upload   Total   Spent    Left  Speed
100   609    0   609    0     0    449      0 --:--:--  0:00:01 --:--:--   449
100 11.7M  100 11.7M    0     0   173k      0  0:01:09  0:01:09 --:--:-- 86426
curl: Saved to filename 'boost_1_63_0.tar.gz'
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100   130    0   130    0     0    131      0 --:--:-- --:--:-- --:--:--   131
100 1504k  100 1504k    0     0  85857      0  0:00:17  0:00:17 --:--:-- 92229
curl: Saved to filename 'folly-2016.09.26.00.tar.gz'
=== BUILD TARGET third-party OF PROJECT React WITH CONFIGURATION Debug ===

And this download was invoked in shell script.

#!/bin/bash
#boostdir="`node ./node_modules/boost-lib/bin/boost-lib download -V 1.63`"
#cd "$boostdir"
#./bootstrap.sh
#./b2 headers
set -e
cachedir="$HOME/.rncache"
mkdir -p "$cachedir"
function fetch_and_unpack () {
    file=$1
    url=$2
    cmd=$3
if [ ! -f "$cachedir/$file" ]; then
        (cd "$cachedir"; curl -J -L -O "$url")
    fi
dir=$(basename "$file" .tar.gz)
    if [ ! -d "third-party/$dir" ]; then
        (cd third-party;
         echo Unpacking "$cachedir/$file"...
         tar zxf "$cachedir/$file"
cd "$dir"
         eval "${cmd:-true}")
    fi
}
mkdir -p third-party
SCRIPTDIR=$(dirname "$0")
fetch_and_unpack glog-0.3.4.tar.gz https://github.com/google/glog/archive/v0.3.4.tar.gz "$SCRIPTDIR/ios-configure-glog.sh"
fetch_and_unpack double-conversion-1.1.5.tar.gz https://github.com/google/double-conversion/archive/v1.1.5.tar.gz
fetch_and_unpack boost_1_63_0.tar.gz https://github.com/react-native-community/boost-for-react-native/releases/download/v1.63.0-0/boost_1_63_0.tar.gz
fetch_and_unpack folly-2016.09.26.00.tar.gz https://github.com/facebook/folly/archive/v2016.09.26.00.tar.gz

As you see, in happy scenario, all of third party libraries will be downloaded successfully.

But frequently, this download process is not done well. (I don’t know why github does not provide enough bandwidth for http download request.)
And the build process even looks like hanged by low speed of download.
That’s why users are interrupt the build process by pressing ctrl + c in here. ( I also did that. )

When the download process was interrupted, the curl command do not handle the unfinished or interrupted download file. It just save incomplete file to target file name.
It means that you may have broken .gz files in ~/.rncache folder.
And it causes the many build failed with file not found errors at build phase.

You should wait till the Saved to filename message be shown on console.
If your build trial failed, you should clean all files on ~/.rncache folder and rerun react-native run-ios command.

The correct size of libraries are below.

-rw-r--r--   1 jerry  staff   1.5M Aug  2 00:39 folly-2016.09.26.00.tar.gz
-rw-r--r--   1 jerry  staff    12M Aug  2 00:38 boost_1_63_0.tar.gz
-rw-r--r--   1 jerry  staff   6.7M Aug  2 00:37 double-conversion-1.1.5.tar.gz
-rw-r--r--   1 jerry  staff   510K Aug  2 00:36 glog-0.3.4.tar.gz

If you get any third-party library build error with react-native run-ios command:

1. clean ~/.rncache folder.
2. Download 4 third party library by manual
   or
   Rerun the react-native run-ios command and wait to print
   curl: Saved to filename message.
   You should check 100% Received status.
   Never press the ctrl+c on build phase.

Thanks for reading.