AdventCalendar 13日目！
人手足りないけどだんないよ精神でいくよ！！！
概要
MacでR言語に入門する際に便利パッケージであるtidyverseのインストールに詰まったので対処法
環境
OS
ProductName: Mac OS X
ProductVersion: 10.13.6
XCode
Xcode 9.3
Build version 9E145
R
R version 3.5.1 (2018-07-02) -- "Feather Spray"
Copyright (C) 2018 The R Foundation for Statistical Computing
Platform: x86_64-apple-darwin17.6.0 (64-bit)
エラーコード
肝心のエラーコード
>install.packages("tidyverse")
Installing package into ‘/usr/local/lib/R/3.5/site-library’
(as ‘lib’ is unspecified)
also installing the dependencies ‘rvest’, ‘xml2’
URL 'https://cran.rstudio.com/src/contrib/rvest_0.3.2.tar.gz' を試しています
Content type 'application/x-gzip' length 1597137 bytes (1.5 MB)
==================================================
downloaded 1.5 MB
URL 'https://cran.rstudio.com/src/contrib/xml2_1.2.0.tar.gz' を試しています
Content type 'application/x-gzip' length 251614 bytes (245 KB)
==================================================
downloaded 245 KB
URL 'https://cran.rstudio.com/src/contrib/tidyverse_1.2.1.tar.gz' を試しています
Content type 'application/x-gzip' length 61647 bytes (60 KB)
==================================================
downloaded 60 KB
* installing *source* package ‘xml2’ ...
** パッケージ ‘xml2’ の解凍および MD5 サムの検証に成功しました
Found pkg-config cflags and libs!
Using PKG_CFLAGS=-I/usr/include/libxml2
Using PKG_LIBS=-L/usr/lib -lxml2 -lz -lpthread -licucore -lm
------------------------- ANTICONF ERROR ---------------------------
Configuration failed because libxml-2.0 was not found. Try installing:
* deb: libxml2-dev (Debian, Ubuntu, etc)
* rpm: libxml2-devel (Fedora, CentOS, RHEL)
* csw: libxml2_dev (Solaris)
If libxml-2.0 is already installed, check that 'pkg-config' is in your
PATH and PKG_CONFIG_PATH contains a libxml-2.0.pc file. If pkg-config
is unavailable you can set INCLUDE_DIR and LIB_DIR manually via:
R CMD INSTALL --configure-vars='INCLUDE_DIR=... LIB_DIR=...'
--------------------------------------------------------------------
ERROR: configuration failed for package ‘xml2’
* removing ‘/usr/local/lib/R/3.5/site-library/xml2’
Warning in install.packages :
installation of package ‘xml2’ had non-zero exit status
ERROR: dependency ‘xml2’ is not available for package ‘rvest’
* removing ‘/usr/local/lib/R/3.5/site-library/rvest’
Warning in install.packages :
installation of package ‘rvest’ had non-zero exit status
ERROR: dependencies ‘rvest’, ‘xml2’ are not available for package ‘tidyverse’
* removing ‘/usr/local/lib/R/3.5/site-library/tidyverse’
Warning in install.packages :
installation of package ‘tidyverse’ had non-zero exit status
The downloaded source packages are in
‘/private/var/folders/mf/h8zpddh14778rlv254chg2000000gs/T/RtmpO6u1wZ/downloaded_packages’
対処１
_ANTICONF ERROR_で「libxml2が入ってないよ」的なエラーが出たのでとりあえずインストール
$ brew install lib2xml
再実行するが、同じエラーが出る
何故？？？
対処２
調べていると、どうもXCode絡みのよう
-
tidyverse - Package installation in R fail on MacOS - Stack Overflow
- このサイトのOlivierさんが載せているコマンドを実行する
$ xcode-select --install
入った！！！
> library(tidyverse)
─ Attaching packages ────────────── tidyverse 1.2.1 ─
✔ ggplot2 3.0.0 ✔ purrr 0.2.5
✔ tibble 1.4.2 ✔ dplyr 0.7.6
✔ tidyr 0.8.1 ✔ stringr 1.3.1
✔ readr 1.1.1 ✔ forcats 0.3.0
─ Conflicts ──────────────── tidyverse_conflicts() ─
✖ dplyr::filter() masks stats::filter()
✖ dplyr::lag() masks stats::lag()
下の_Conflicts_に関してはデフォルトっぽいのでそのままでOK
まとめ
そもそもXCodeのコマンドラインツールが入ってなかった
学習始めの環境構築で詰まるとモチベーションをグッと持っていかれる、、、