Build failing in MacOS

[dmurdoch]

I'm trying to build htmltools on MacOS, but the build fails with these messages:

** testing if installed package can be loaded
Error: package or namespace load failed for ‘htmltools’ in dyn.load(file, DLLpath = DLLpath, ...):
 unable to load shared object '/Library/Frameworks/R.framework/Versions/3.4/Resources/library/htmltools/libs/htmltools.so':
  dlopen(/Library/Frameworks/R.framework/Versions/3.4/Resources/library/htmltools/libs/htmltools.so, 6): Symbol not found: _htmltools_template_dfa
  Referenced from: /Library/Frameworks/R.framework/Versions/3.4/Resources/library/htmltools/libs/htmltools.so
  Expected in: flat namespace in /Library/Frameworks/R.framework/Versions/3.4/Resources/library/htmltools/libs/htmltools.so
Error: loading failed
Execution halted
ERROR: loading failed
* removing ‘/Library/Frameworks/R.framework/Versions/3.4/Resources/library/htmltools’

The missing symbol is one produced automatically by Rcpp, so I've tried updating Rcpp, deleting the automatically generated files and regenerating them, etc., all with no improvement. Is this a problem in htmltools, or on my system (which I've recently updated)?

[wch]

What command are you using to build it? For example, this works for me:

> install.packages('htmltools', type='source')
Installing package into ‘/Users/winston/R/3.4’
(as ‘lib’ is unspecified)
trying URL 'https://cloud.r-project.org/src/contrib/htmltools_0.3.6.tar.gz'
Content type 'application/x-gzip' length 45408 bytes (44 KB)
==================================================
downloaded 44 KB

* installing *source* package ‘htmltools’ ...
** package ‘htmltools’ successfully unpacked and MD5 sums checked
** libs
clang++  -I/Library/Frameworks/R.framework/Resources/include -DNDEBUG  -I"/Users/winston/R/3.4/Rcpp/include" -I/usr/local/include   -fPIC  -Wall -g -O2  -g -O0 -Wall -c RcppExports.cpp -o RcppExports.o
clang -I/Library/Frameworks/R.framework/Resources/include -DNDEBUG  -I"/Users/winston/R/3.4/Rcpp/include" -I/usr/local/include   -fPIC  -Wall -g -O2  -g -O0 -Wall -c init.c -o init.o
clang++  -I/Library/Frameworks/R.framework/Resources/include -DNDEBUG  -I"/Users/winston/R/3.4/Rcpp/include" -I/usr/local/include   -fPIC  -Wall -g -O2  -g -O0 -Wall -c template.cpp -o template.o
clang++ -dynamiclib -Wl,-headerpad_max_install_names -undefined dynamic_lookup -single_module -multiply_defined suppress -L/Library/Frameworks/R.framework/Resources/lib -L/usr/local/lib -o htmltools.so RcppExports.o init.o template.o -F/Library/Frameworks/R.framework/.. -framework R -Wl,-framework -Wl,CoreFoundation
installing to /Users/winston/R/3.4/htmltools/libs
** R
** preparing package for lazy loading
** help
*** installing help indices
** building package indices
** testing if installed package can be loaded
* DONE (htmltools)

The downloaded source packages are in
	‘/private/var/folders/vd/0_g4hj6d7kq_fw5gd_r0ml5w0000gn/T/Rtmpogg4mz/downloaded_packages’

> sessioninfo::session_info()
─ Session info ───────────────────────────────────────────────────────────────
 setting  value                       
 version  R version 3.4.3 (2017-11-30)
 os       macOS High Sierra 10.13.2   
 system   x86_64, darwin15.6.0        
 ui       X11                         
 language (EN)                        
 collate  en_US.UTF-8                 
 tz       America/Chicago             
 date     2018-01-17                  

─ Packages ───────────────────────────────────────────────────────────────────
 package     * version date       source        
 clisymbols    1.2.0   2017-05-21 CRAN (R 3.4.0)
 sessioninfo   1.0.0   2017-06-21 CRAN (R 3.4.1)
 withr         2.1.1   2017-12-19 CRAN (R 3.4.3)

[wch]

I'm guessing you're using devtools::install() or devtools::install_github(). I've pushed a fix.

[dmurdoch]

I was using Install and Restart in RStudio, which uses devtools::install(). Your change fixes it. Thanks!