r - 安装 Rcpp "library not found for -lintl"时出现链接错误

Question

当我尝试安装一些具有 Rcpp 的 R 软件包时，我偶然发现了链接器错误。作为依赖。我的设置是 Mac OS X 10.9.1 (Mavericks)，由 Homebrew 安装 R 3.0.2。这是错误输出:

> install.packages('Rcpp')
trying URL 'http://cran.fhcrc.org/src/contrib/Rcpp_0.10.6.tar.gz'
Content type 'application/x-gzip' length 1985569 bytes (1.9 Mb)
opened URL
==================================================
downloaded 1.9 Mb

* installing *source* package ‘Rcpp’ ...
** package ‘Rcpp’ successfully unpacked and MD5 sums checked
** libs
clang++ -I/usr/local/Cellar/r/3.0.2/R.framework/Resources/include -DNDEBUG -I../inst/include/ -I/usr/local/include    -fPIC  -g -O2  -c Date.cpp -o Date.o
clang++ -I/usr/local/Cellar/r/3.0.2/R.framework/Resources/include -DNDEBUG -I../inst/include/ -I/usr/local/include    -fPIC  -g -O2  -c Module.cpp -o Module.o
clang -I/usr/local/Cellar/r/3.0.2/R.framework/Resources/include -DNDEBUG -I../inst/include/ -I/usr/local/include    -fPIC   -c Rcpp_init.c -o Rcpp_init.o
clang++ -I/usr/local/Cellar/r/3.0.2/R.framework/Resources/include -DNDEBUG -I../inst/include/ -I/usr/local/include    -fPIC  -g -O2  -c Timer.cpp -o Timer.o
clang++ -I/usr/local/Cellar/r/3.0.2/R.framework/Resources/include -DNDEBUG -I../inst/include/ -I/usr/local/include    -fPIC  -g -O2  -c api.cpp -o api.o
clang++ -I/usr/local/Cellar/r/3.0.2/R.framework/Resources/include -DNDEBUG -I../inst/include/ -I/usr/local/include    -fPIC  -g -O2  -c attributes.cpp -o attributes.o
clang++ -I/usr/local/Cellar/r/3.0.2/R.framework/Resources/include -DNDEBUG -I../inst/include/ -I/usr/local/include    -fPIC  -g -O2  -c barrier.cpp -o barrier.o
clang++ -I/usr/local/Cellar/r/3.0.2/R.framework/Resources/include -DNDEBUG -I../inst/include/ -I/usr/local/include    -fPIC  -g -O2  -c exceptions.cpp -o exceptions.o
clang++ -dynamiclib -Wl,-headerpad_max_install_names -undefined dynamic_lookup -single_module -multiply_defined suppress -L/usr/local/lib -o Rcpp.so Date.o Module.o Rcpp_init.o Timer.o api.o attributes.o barrier.o exceptions.o -F/usr/local/Cellar/r/3.0.2/R.framework/.. -framework R -lintl -Wl,-framework -Wl,CoreFoundation
ld: library not found for -lintl
clang: error: linker command failed with exit code 1 (use -v to see invocation)

Answer 1

显然，libintl 是 gettext 的一部分包裹。我执行了以下操作(可能是多余的重新安装)，以确保我的副本是最新的:

$ brew install gettext
Warning: gettext-0.18.3.2 already installed
$ brew reinstall gettext
==> Reinstalling gettext 
==> Downloading http://ftpmirror.gnu.org/gettext/gettext-0.18.3.2.tar.gz
Already downloaded: /Library/Caches/Homebrew/gettext-0.18.3.2.tar.gz
==> ./configure --prefix=/usr/local/Cellar/gettext/0.18.3.2 --with-included-gettext --with-included-glib --with-included-libcroco --with-included-libunistring --with-emac
==> make
==> make install
==> Caveats
This formula is keg-only, so it was not symlinked into /usr/local.

OS X provides the BSD gettext library and some software gets confused if both are in the library path.

Generally there are no consequences of this for you. If you build your
own software and it requires this formula, you'll need to add to your
build variables:

    LDFLAGS:  -L/usr/local/opt/gettext/lib
    CPPFLAGS: -I/usr/local/opt/gettext/include

在上面的输出中，brew 没有对库进行符号链接(symbolic link)，这可能解释了为什么 install.packages找不到它。诀窍是将库路径添加到 ~/.R/Makevars 中。像这样:

PKG_LIBS=-L/usr/local/Cellar/gettext/0.18.3.2/lib