R devel - Dec 2009 - R CMD SHLIB on Mac OS X fails when the default tempdir() is used (PR#14168)

This is prompted by trying to run the 'inline' package on Mac OS X
Leopard with R 2.10.1. Mac uses completely crazy temp paths and R uses those as
well. The inline package creates source files in the temp directory which it
then compiles with R CMD SHLIB and attaches. The compilation fails with the
error message below which seems to be caused by the complexity of the path
(compiling the same file with R CMD SHLIB and a sane path is ok, see below).
What can look like an inline problem, in fact is not inline's as it fails in
exactly the same way when run from a command line (see below). It fails on c,
cpp, f files. For the inline package, I will get a workaround by setwd to the
location of the code and then setwd back, but generally one should be able to
run R CMD SHLIB with any valid path, at least this one contains only
alphanumerics and + and -.

Best,
Oleg

Browse[2]> system("/Library/Frameworks/R.framework/Resources/bin/R CMD
SHLIB
/var/folders/bU/bUB3Gk1uHBuDXq1G72Xc+++++TI/-Tmp-/RtmpGzn3kA/file60b7acd9.cpp")
Error in sub(p0(base, "."), "", a) :=20
  invalid regular expression
'/var/folders/bU/bUB3Gk1uHBuDXq1G72Xc+++++TI/-Tmp-/RtmpGzn3kA/file60b7acd9.'
Calls: <Anonymous> -> .shlib_internal -> sub
In addition: Warning message:
In sub(p0(base, "."), "", a) :
  regcomp error:  'Invalid use of repetition operators'
Execution halted
Browse[2]> system("R CMD SHLIB
/var/folders/bU/bUB3Gk1uHBuDXq1G72Xc+++++TI/-Tmp-/RtmpGzn3kA/file60b7acd9.cpp")
Error in sub(p0(base, "."), "", a) :=20
  invalid regular expression
'/var/folders/bU/bUB3Gk1uHBuDXq1G72Xc+++++TI/-Tmp-/RtmpGzn3kA/file60b7acd9.'
Calls: <Anonymous> -> .shlib_internal -> sub
In addition: Warning message:
In sub(p0(base, "."), "", a) :
  regcomp error:  'Invalid use of repetition operators'
Execution halted
Browse[2]> tempdir()
[1] "/var/folders/bU/bUB3Gk1uHBuDXq1G72Xc+++++TI/-Tmp-//RtmpGzn3kA"
Browse[2]> sessionInfo()
R version 2.10.1 (2009-12-14)=20
x86_64-apple-darwin9.8.0=20

locale:
[1] en_GB.UTF-8/en_GB.UTF-8/C/C/en_GB.UTF-8/en_GB.UTF-8

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods  
base=20=20=20=20=20

other attached packages:
[1] inline_0.3.3.1

bash-3.2$ R CMD SHLIB
/var/folders/bU/bUB3Gk1uHBuDXq1G72Xc+++++TI/-Tmp-/RtmpGzn3kA/file60b7acd9.cpp
Error in sub(p0(base, "."), "", a) :=20
  invalid regular expression
'/var/folders/bU/bUB3Gk1uHBuDXq1G72Xc+++++TI/-Tmp-/RtmpGzn3kA/file60b7acd9.'
Calls: <Anonymous> -> .shlib_internal -> sub
In addition: Warning message:
In sub(p0(base, "."), "", a) :
  regcomp error:  'Invalid use of repetition operators'
Execution halted
bash-3.2$ pwd
/Users/osklyar/Code
bash-3.2$ cd tmp/
bash-3.2$ ln -s
/var/folders/bU/bUB3Gk1uHBuDXq1G72Xc+++++TI/-Tmp-/RtmpGzn3kA/file60b7acd9.cpp
file60b7acd9.cpp
bash-3.2$ ls
file60b7acd9.cpp        inline
bash-3.2$ R CMD SHLIB file60b7acd9.cpp=20
g++-4.2 -arch x86_64 -I/Library/Frameworks/R.framework/Resources/include
-I/Library/Frameworks/R.framework/Resources/include/x86_64  -I/usr/local/include
-fPIC  -mtune=3Dcore2 -g -O2 -c file60b7acd9.cpp -o file60b7acd9.o
g++-4.2 -arch x86_64 -dynamiclib -Wl,-headerpad_max_install_names -undefined
dynamic_lookup -single_module -multiply_defined suppress -L/usr/local/lib -o
file60b7acd9.so file60b7acd9.o -F/Library/Frameworks/R.framework/.. -framework R
-Wl,-framework -Wl,CoreFoundation
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