mono.issue.21320

code snippet to reproduce https://github.com/mono/mono/issues/21320

• requirements:
  • Linux
  • current mono (v6.12)
  • g++
  • R 4.1 and package Rcpp

using plain C++ code

$ msbuild && make g++ -c main.cpp `pkg-config --cflags mono-2` -std=gnu++14 -DMONO_EMBED_CPP_MAIN -fPIC g++ -c -o hello.o hello.cpp `pkg-config --cflags mono-2` -lm -std=gnu++14 -DMONO_EMBED_CPP_MAIN -fPIC gcc -shared -o libhello.so hello.o `pkg-config --libs mono-2` -std=gnu++14 -DMONO_EMBED_CPP_MAIN -fPIC g++ -o main main.o -std=gnu++14 -DMONO_EMBED_CPP_MAIN -fPIC -L`pwd` -lhello cpanse@fgcz-c-073:~/__checkouts/mono.issue.21320 > make && ./main g++ -c main.cpp `pkg-config --cflags mono-2` -std=gnu++14 -DMONO_EMBED_CPP_MAIN -fPIC g++ -c -o hello.o hello.cpp `pkg-config --cflags mono-2` -lm -std=gnu++14 -DMONO_EMBED_CPP_MAIN -fPIC gcc -shared -o libhello.so hello.o `pkg-config --libs mono-2` -std=gnu++14 -DMONO_EMBED_CPP_MAIN -fPIC g++ -o main main.o -std=gnu++14 -DMONO_EMBED_CPP_MAIN -fPIC -L`pwd` -lhello DomainName=rawrrrHello hello.h OpenFile... INFO[0]: file:///home/cpanse/__checkouts/mono.issue.21320/helloRcpp.exe INFO[1]: 995 INFO[2]: System.Diagnostics.Process (/home/cpanse/__checkouts/mono.issue.21320/main) INFO[3]: currentProcess.Id: 39317 INFO[4]: PrivateMemorySize64 (KB): 34400 INFO[5]: Error message: INFO[6]: raw file name: hello.h

using Rcpp and mono v6.12 ❌

``` $ export MONOLOGLEVEL=debug $ export MONOLOGMASK=dll,cfg $ R --no-save < Hello.R

...

R> R$openFile() OpenFile... Mono: DllImport attempting to load: '/usr/lib/../lib/libmono-native.so'. Mono: DllImport error loading library '/usr/lib/../lib/libmono-native.so': '/usr/lib/../lib/libmono-native.so: undefined symbol: monoaddinternalcallwithflags'. Mono: DllImport error loading library '/usr/lib/../lib/libmono-native.so': '/usr/lib/../lib/libmono-native.so: undefined symbol: monoaddinternalcallwithflags'. Mono: DllImport error loading library '/usr/lib/../lib/libmono-native.so': '/usr/lib/../lib/libmono-native.so: undefined symbol: monoaddinternalcallwithflags'. Mono: DllImport error loading library '/usr/lib/../lib/libmono-native.so': '/usr/lib/../lib/libmono-native.so: undefined symbol: monoaddinternalcallwithflags'. Mono: DllImport error loading library '/usr/lib/../lib/libmono-native.so': '/usr/lib/../lib/libmono-native.so: undefined symbol: monoaddinternalcallwith_flags'. Mono: DllImport unable to load library '/usr/lib/../lib/libmono-native.so'. Mono: DllImport attempting to load: '/usr/lib/../lib/libmono-native.so'. ...

```

using Rcpp and mono v5.18 ✅

``` cpanse@fgcz-c-073:~/__checkouts/mono.issue.21320 (main)> R --no-save < Hello.R

R version 4.1.1 (2021-08-10) -- "Kick Things" Copyright (C) 2021 The R Foundation for Statistical Computing Platform: x86_64-pc-linux-gnu (64-bit)

R is free software and comes with ABSOLUTELY NO WARRANTY. You are welcome to redistribute it under certain conditions. Type 'license()' or 'licence()' for distribution details.

R is a collaborative project with many contributors. Type 'contributors()' for more information and 'citation()' on how to cite R or R packages in publications.

Type 'demo()' for some demos, 'help()' for on-line help, or 'help.start()' for an HTML browser interface to help. Type 'q()' to quit R.

R> #R R> R> Sys.setenv("PKGCPPFLAGS"="pkg-config --cflags mono-2 -O3") R> Sys.setenv("PKGCXXFLAGS"="pkg-config --cflags mono-2 -O3") R> Sys.setenv("PKG_LIBS"="pkg-config --libs mono-2") R> R> R> Rcpp::sourceCpp("hello.cpp", cacheDir = "/tmp/cpanse/Hello/", showOutput=TRUE, verbose=TRUE, rebuild = TRUE)

Generated extern "C" functions

include

ifdef RCPPUSEGLOBAL_ROSTREAM

Rcpp::Rostream& Rcpp::Rcout = Rcpp::Rcppcoutget(); Rcpp::Rostream& Rcpp::Rcerr = Rcpp::Rcppcerrget();

endif

Generated R functions

.sourceCpp_39_DLLInfo <- dyn.load('/tmp/cpanse/Hello/sourceCpp-x8664-pc-linux-gnu-1.0.7/sourcecppaecb61c06d74/sourceCpp_40.so')

library(Rcpp) populate( Rcpp::Module("RawrrMod",.sourceCpp_39_DLLInfo), environment() )

rm(.sourceCpp_39_DLLInfo)

Building shared library

DIR: /tmp/cpanse/Hello/sourceCpp-x8664-pc-linux-gnu-1.0.7/sourcecppaecb61c06d74

/usr/lib/R/bin/R CMD SHLIB --preclean -o 'sourceCpp40.so' 'hello.cpp' g++ -std=gnu++14 -I"/usr/share/R/include" -DNDEBUG pkg-config --cflags mono-2 -O3 -I"/home/cpanse/R/x8664-pc-linux-gnu-library/4.1/Rcpp/include" -I"/home/cpanse/checkouts/mono.issue.21320" pkg-config --cflags mono-2 -O3 -fpic -g -O2 -fdebug-prefix-map=/home/jranke/git/r-backports/buster/r-base-4.1.1=. -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -DFORTIFYSOURCE=2 -g -c hello.cpp -o hello.o g++ -std=gnu++14 -shared -L/usr/lib/R/lib -Wl,-z,relro -o sourceCpp40.so hello.o -L/usr/lib/pkgconfig/../../lib -lmono-2.0 -lm -lrt -ldl -lpthread -L/usr/lib/R/lib -lR R> R> f <- "hello.h" R> R> R> R <- new(Rawrr) R> R$setDomainName("Hello") DomainName=rawrrrHello R> R$createObject() monoobjectnew ... [DONE] monoruntimeobjectinit ... [DONE] R> R$setRawFile(f) hello.h R> R$get_info() INFO[0]: file:///home/cpanse/checkouts/mono.issue.21320/helloRcpp.exe INFO[1]: INFO[2]: System.Diagnostics.Process (/usr/lib/R/bin/exec/R) INFO[3]: currentProcess.Id: 44747 INFO[4]: PrivateMemorySize64 (KB): 96716 INFO[5]: Error message: INFO[6]: raw file name: hello.h [1] 0 R> R$openFile() OpenFile... R> R$getinfo() INFO[0]: file:///home/cpanse/checkouts/mono.issue.21320/helloRcpp.exe INFO[1]: 995 INFO[2]: System.Diagnostics.Process (/usr/lib/R/bin/exec/R) INFO[3]: currentProcess.Id: 44747 INFO[4]: PrivateMemorySize64 (KB): 96716 INFO[5]: Error message: INFO[6]: raw file name: hello.h [1] 0 R> R> packageVersion("Rcpp") [1] '1.0.7' R> # Sys.getenv()
R> cpanse@fgcz-c-073:~/_checkouts/mono.issue.21320 (main)>

```