Jeroen created ARROW-9616:
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Summary: [C++] Support LTO for R
Key: ARROW-9616
URL: https://issues.apache.org/jira/browse/ARROW-9616
Project: Apache Arrow
Issue Type: Bug
Components: C++, R
Affects Versions: 1.0.0
Reporter: Jeroen
The next version of R might enable LTO on Windows, i.e. R packages will be
compiled with {{-flto}} by default. This works out of the box for most
packages, but for arrow, the linker crashes as below.
{code}
C:/rtools40/mingw64/bin/g++ -shared -O2 -Wall -mfpmath=sse -msse2
-mstackrealign -flto -s -static-libgcc -o arrow.dll tmp.def array.o
array_from_vector.o array_to_vector.o arraydata.o arrowExports.o buffer.o
chunkedarray.o compression.o compute.o csv.o dataset.o datatype.o expression.o
feather.o field.o filesystem.o imports.o io.o json.o memorypool.o message.o
parquet.o py-to-r.o recordbatch.o recordbatchreader.o recordbatchwriter.o
scalar.o schema.o symbols.o table.o threadpool.o -L../windows//lib-8.3.0/x64
-L../windows//lib/x64 -lparquet -larrow_dataset -larrow -lthrift -lsnappy -lz
-lzstd -llz4 -lbcrypt -lpsapi -lcrypto -lcrypt32 -lws2_32
-LC:/PROGRA~1/R/R-devel/bin/x64 -lR
lto1.exe: internal compiler error: in add_symbol_to_partition_1, at
lto/lto-partition.c:153
libbacktrace could not find executable to open
Please submit a full bug report,
with preprocessed source if appropriate.
See <[https://github.com/r-windows]> for instructions.
lto-wrapper.exe: fatal error: C:\rtools40\mingw64\bin\g++.exe returned 1 exit
status
compilation terminated.
C:/rtools40/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/9.3.0/../../../../x86_64-w64-mingw32/bin/ld.exe:
error: lto-wrapper failed
{code}
You can easily produce this for example like this:
{code:r}
dir.create("~/.R")
writeLines("CXXFLAGS=-flto", file = "~/.R/Makevars")
install.packages("arrow", type = 'source')
{code}
I am not sure if this is a bug in the toolchain, or in arrow. I tried with both
gcc-8.3.0 and gcc-9.3.0, and the result is the same. I did find [this
issue|https://github.com/cycfi/elements/pull/56] in another project which
suggests to enable `INTERPROCEDURAL_OPTIMIZATION` in cmake.
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