对于 R，安装 RMySQL 包时出错

Question

I'm trying to install the the RMySQL package using

bash > R
...
> install.packages('RMySQL', repos='http://cran.us.r-project.org')

and get the following output with an error at the end:

Installing package into ‘/usr/local/lib/R/3.2/site-library’
(as ‘lib’ is unspecified)
trying URL 'http://cran.us.r-project.org/src/contrib/RMySQL_0.10.6.tar.gz'
Content type 'application/x-gzip' length 52407 bytes (51 KB)
==================================================
downloaded 51 KB

* installing *source* package ‘RMySQL’ ...
** package ‘RMySQL’ successfully unpacked and MD5 sums checked
Found mysql_config cflags and libs!
Using PKG_CFLAGS=-I/usr/local/mysql/include   -g -fno-omit-frame-pointer -fno-strict-aliasing -arch x86_64
Using PKG_LIBS=-L/usr/local/mysql/lib  -lmysqlclient
** libs
clang -I/usr/local/Cellar/r/3.2.2_1/R.framework/Resources/include -DNDEBUG -I/usr/local/mysql/include   -g -fno-omit-frame-pointer -fno-strict-aliasing -arch x86_64 -I/usr/local/opt/gettext/include -I/usr/local/opt/readline/include -I/usr/local/opt/openssl/include    -fPIC  -g -O2  -c RMySQL-init.c -o RMySQL-init.o
clang -I/usr/local/Cellar/r/3.2.2_1/R.framework/Resources/include -DNDEBUG -I/usr/local/mysql/include   -g -fno-omit-frame-pointer -fno-strict-aliasing -arch x86_64 -I/usr/local/opt/gettext/include -I/usr/local/opt/readline/include -I/usr/local/opt/openssl/include    -fPIC  -g -O2  -c connection.c -o connection.o
clang -I/usr/local/Cellar/r/3.2.2_1/R.framework/Resources/include -DNDEBUG -I/usr/local/mysql/include   -g -fno-omit-frame-pointer -fno-strict-aliasing -arch x86_64 -I/usr/local/opt/gettext/include -I/usr/local/opt/readline/include -I/usr/local/opt/openssl/include    -fPIC  -g -O2  -c db-apply.c -o db-apply.o
clang -I/usr/local/Cellar/r/3.2.2_1/R.framework/Resources/include -DNDEBUG -I/usr/local/mysql/include   -g -fno-omit-frame-pointer -fno-strict-aliasing -arch x86_64 -I/usr/local/opt/gettext/include -I/usr/local/opt/readline/include -I/usr/local/opt/openssl/include    -fPIC  -g -O2  -c driver.c -o driver.o
clang -I/usr/local/Cellar/r/3.2.2_1/R.framework/Resources/include -DNDEBUG -I/usr/local/mysql/include   -g -fno-omit-frame-pointer -fno-strict-aliasing -arch x86_64 -I/usr/local/opt/gettext/include -I/usr/local/opt/readline/include -I/usr/local/opt/openssl/include    -fPIC  -g -O2  -c exception.c -o exception.o
clang -I/usr/local/Cellar/r/3.2.2_1/R.framework/Resources/include -DNDEBUG -I/usr/local/mysql/include   -g -fno-omit-frame-pointer -fno-strict-aliasing -arch x86_64 -I/usr/local/opt/gettext/include -I/usr/local/opt/readline/include -I/usr/local/opt/openssl/include    -fPIC  -g -O2  -c fields.c -o fields.o
clang -I/usr/local/Cellar/r/3.2.2_1/R.framework/Resources/include -DNDEBUG -I/usr/local/mysql/include   -g -fno-omit-frame-pointer -fno-strict-aliasing -arch x86_64 -I/usr/local/opt/gettext/include -I/usr/local/opt/readline/include -I/usr/local/opt/openssl/include    -fPIC  -g -O2  -c result.c -o result.o
clang -I/usr/local/Cellar/r/3.2.2_1/R.framework/Resources/include -DNDEBUG -I/usr/local/mysql/include   -g -fno-omit-frame-pointer -fno-strict-aliasing -arch x86_64 -I/usr/local/opt/gettext/include -I/usr/local/opt/readline/include -I/usr/local/opt/openssl/include    -fPIC  -g -O2  -c utils.c -o utils.o
clang -dynamiclib -Wl,-headerpad_max_install_names -undefined dynamic_lookup -single_module -multiply_defined suppress -L/usr/local/Cellar/r/3.2.2_1/R.framework/Resources/lib -L/usr/local/opt/gettext/lib -L/usr/local/opt/readline/lib -L/usr/local/opt/openssl/lib -o RMySQL.so RMySQL-init.o connection.o db-apply.o driver.o exception.o fields.o result.o utils.o -L/usr/local/mysql/lib -lmysqlclient -F/usr/local/Cellar/r/3.2.2_1/R.framework/.. -framework R -lintl -Wl,-framework -Wl,CoreFoundation
installing to /usr/local/lib/R/3.2/site-library/RMySQL/libs
** R
** preparing package for lazy loading
** help
*** installing help indices
** building package indices
** testing if installed package can be loaded
Error in dyn.load(file, DLLpath = DLLpath, ...) :
  unable to load shared object '/usr/local/lib/R/3.2/site-library/RMySQL/libs/RMySQL.so':
  dlopen(/usr/local/lib/R/3.2/site-library/RMySQL/libs/RMySQL.so, 6): Library not loaded: libmysqlclient.18.dylib
  Referenced from: /usr/local/lib/R/3.2/site-library/RMySQL/libs/RMySQL.so
  Reason: image not found
Error: loading failed
Execution halted
ERROR: loading failed
* removing ‘/usr/local/lib/R/3.2/site-library/RMySQL’

The downloaded source packages are in
    ‘/private/var/folders/87/wkgwm0754tn9csz8295qjmmc000bxz/T/RtmpxlEAlo/downloaded_packages’
Warning message:
In install.packages("RMySQL", repos = "http://cran.us.r-project.org") :
  installation of package ‘RMySQL’ had non-zero exit status
>
> install.packages('RMySQL', repos='http://cran.us.r-project.org')
Installing package into ‘/usr/local/lib/R/3.2/site-library’
(as ‘lib’ is unspecified)
trying URL 'http://cran.us.r-project.org/src/contrib/RMySQL_0.10.6.tar.gz'
Content type 'application/x-gzip' length 52407 bytes (51 KB)
==================================================
downloaded 51 KB

* installing *source* package ‘RMySQL’ ...
** package ‘RMySQL’ successfully unpacked and MD5 sums checked
Found mysql_config cflags and libs!
Using PKG_CFLAGS=-I/usr/local/mysql/include   -g -fno-omit-frame-pointer -fno-strict-aliasing -arch x86_64
Using PKG_LIBS=-L/usr/local/mysql/lib  -lmysqlclient
** libs
clang -I/usr/local/Cellar/r/3.2.2_1/R.framework/Resources/include -DNDEBUG -I/usr/local/mysql/include   -g -fno-omit-frame-pointer -fno-strict-aliasing -arch x86_64 -I/usr/local/opt/gettext/include -I/usr/local/opt/readline/include -I/usr/local/opt/openssl/include    -fPIC  -g -O2  -c RMySQL-init.c -o RMySQL-init.o
clang -I/usr/local/Cellar/r/3.2.2_1/R.framework/Resources/include -DNDEBUG -I/usr/local/mysql/include   -g -fno-omit-frame-pointer -fno-strict-aliasing -arch x86_64 -I/usr/local/opt/gettext/include -I/usr/local/opt/readline/include -I/usr/local/opt/openssl/include    -fPIC  -g -O2  -c connection.c -o connection.o
clang -I/usr/local/Cellar/r/3.2.2_1/R.framework/Resources/include -DNDEBUG -I/usr/local/mysql/include   -g -fno-omit-frame-pointer -fno-strict-aliasing -arch x86_64 -I/usr/local/opt/gettext/include -I/usr/local/opt/readline/include -I/usr/local/opt/openssl/include    -fPIC  -g -O2  -c db-apply.c -o db-apply.o
clang -I/usr/local/Cellar/r/3.2.2_1/R.framework/Resources/include -DNDEBUG -I/usr/local/mysql/include   -g -fno-omit-frame-pointer -fno-strict-aliasing -arch x86_64 -I/usr/local/opt/gettext/include -I/usr/local/opt/readline/include -I/usr/local/opt/openssl/include    -fPIC  -g -O2  -c driver.c -o driver.o
clang -I/usr/local/Cellar/r/3.2.2_1/R.framework/Resources/include -DNDEBUG -I/usr/local/mysql/include   -g -fno-omit-frame-pointer -fno-strict-aliasing -arch x86_64 -I/usr/local/opt/gettext/include -I/usr/local/opt/readline/include -I/usr/local/opt/openssl/include    -fPIC  -g -O2  -c exception.c -o exception.o
clang -I/usr/local/Cellar/r/3.2.2_1/R.framework/Resources/include -DNDEBUG -I/usr/local/mysql/include   -g -fno-omit-frame-pointer -fno-strict-aliasing -arch x86_64 -I/usr/local/opt/gettext/include -I/usr/local/opt/readline/include -I/usr/local/opt/openssl/include    -fPIC  -g -O2  -c fields.c -o fields.o
clang -I/usr/local/Cellar/r/3.2.2_1/R.framework/Resources/include -DNDEBUG -I/usr/local/mysql/include   -g -fno-omit-frame-pointer -fno-strict-aliasing -arch x86_64 -I/usr/local/opt/gettext/include -I/usr/local/opt/readline/include -I/usr/local/opt/openssl/include    -fPIC  -g -O2  -c result.c -o result.o
clang -I/usr/local/Cellar/r/3.2.2_1/R.framework/Resources/include -DNDEBUG -I/usr/local/mysql/include   -g -fno-omit-frame-pointer -fno-strict-aliasing -arch x86_64 -I/usr/local/opt/gettext/include -I/usr/local/opt/readline/include -I/usr/local/opt/openssl/include    -fPIC  -g -O2  -c utils.c -o utils.o
clang -dynamiclib -Wl,-headerpad_max_install_names -undefined dynamic_lookup -single_module -multiply_defined suppress -L/usr/local/Cellar/r/3.2.2_1/R.framework/Resources/lib -L/usr/local/opt/gettext/lib -L/usr/local/opt/readline/lib -L/usr/local/opt/openssl/lib -o RMySQL.so RMySQL-init.o connection.o db-apply.o driver.o exception.o fields.o result.o utils.o -L/usr/local/mysql/lib -lmysqlclient -F/usr/local/Cellar/r/3.2.2_1/R.framework/.. -framework R -lintl -Wl,-framework -Wl,CoreFoundation
installing to /usr/local/lib/R/3.2/site-library/RMySQL/libs
** R
** preparing package for lazy loading
** help
*** installing help indices
** building package indices
** testing if installed package can be loaded
Error in dyn.load(file, DLLpath = DLLpath, ...) :
  unable to load shared object '/usr/local/lib/R/3.2/site-library/RMySQL/libs/RMySQL.so':
  dlopen(/usr/local/lib/R/3.2/site-library/RMySQL/libs/RMySQL.so, 6): Library not loaded: libmysqlclient.18.dylib
  Referenced from: /usr/local/lib/R/3.2/site-library/RMySQL/libs/RMySQL.so
  Reason: image not found
Error: loading failed
Execution halted
ERROR: loading failed
* removing ‘/usr/local/lib/R/3.2/site-library/RMySQL’

The downloaded source packages are in
    ‘/private/var/folders/87/wkgwm0754tn9csz8295qjmmc000bxz/T/RtmpxlEAlo/downloaded_packages’
Warning message:
In install.packages("RMySQL", repos = "http://cran.us.r-project.org") :
  installation of package ‘RMySQL’ had non-zero exit status

Any idea?

Answer 1

You need to give more details about your installation. I guess you are using a homebrew version of R? You are strongly recommended to use the official R package for mac instead, which is what the CRAN build servers (and most users) are using.

That said, there seems to be something odd with your libmysqlclient installation. Assuming this is brew, try reinstalling:

brew remove mysql-connector-c
brew upgrade
brew install mysql-connector-c

Verify that libmysqlclient.18.dylib is installed:

ls /usr/local/opt/mysql-connector-c/lib

Alternatively you can try linking to mariadb:

brew remove mysql-connector-c
brew install mariadb

If this doesn't work it might be a bug in the brew version of R. The compiler fails to record the path to libmysqlclient.18.dylib . Maybe R not passing the correct RPATH flags to the linker.