* installing *source* package ‘fru’ ...
** package ‘fru’ successfully unpacked and MD5 sums checked
** using staged installation
cargo 1.93.0 (083ac5135 2025-12-15)
rustc 1.93.0 (254b59607 2026-01-19)
** libs
using C compiler: ‘Apple clang version 14.0.3 (clang-1403.0.22.14.1)’
using SDK: ‘MacOSX11.3.sdk’
clang -arch x86_64 -I"/Library/Frameworks/R.framework/Resources/include" -DNDEBUG -DSTRICT_R_HEADERS -DR_NO_REMAP  -I/opt/R/x86_64/include    -fPIC  -falign-functions=64 -Wall -g -O2  -c wrapper.c -o wrapper.o
mkdir -p /Volumes/Builds/packages/big-sur-x86_64/results/4.4/fru.Rcheck/00_pkg_src/fru/src/.cargo
PATH="/opt/R/x86_64/bin:/opt/gfortran/bin:/Applications/CMake.app/CMake.app/Contents/bin:/Library/Frameworks/R.framework/Resources/bin:/opt/gfortran/bin:/opt/R/x86_64/bin:/usr/local/bin:/System/Cryptexes/App/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Library/TeX/texbin:/usr/local/go/bin:/opt/X11/bin:/Library/Apple/usr/bin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/local/bin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/bin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/appleinternal/bin:/Users/urbanek/.cargo/bin" cargo build --offline --release -j 2 --manifest-path=fru/Cargo.toml
wrapper.c:110:12: error: call to undeclared function 'Rf_asBool'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
  bool nrm=Rf_asBool(sNormalise);
           ^
wrapper.c:110:12: note: did you mean 'Rf_asReal'?
/Library/Frameworks/R.framework/Resources/include/Rinternals.h:471:8: note: 'Rf_asReal' declared here
double Rf_asReal(SEXP x);
       ^
wrapper.c:133:24: error: call to undeclared function 'Rf_asBool'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
  bool make_importance=Rf_asBool(sImportance);
                       ^
2 errors generated.
make: *** [wrapper.o] Error 1
make: *** Waiting for unfinished jobs....
warning: a `-j` argument was passed to Cargo but Cargo is also configured with an external jobserver in its environment, ignoring the `-j` parameter
     Locking 1 package to latest Rust 1.93.0 compatible version
      Adding xrf v0.1.3 (/Volumes/Builds/packages/big-sur-x86_64/results/4.4/fru.Rcheck/00_pkg_src/fru/src/xrf)
   Compiling xrf v0.1.3 (/Volumes/Builds/packages/big-sur-x86_64/results/4.4/fru.Rcheck/00_pkg_src/fru/src/xrf)
   Compiling fru v0.1.0 (/Volumes/Builds/packages/big-sur-x86_64/results/4.4/fru.Rcheck/00_pkg_src/fru/src/fru)
    Finished `release` profile [optimized] target(s) in 1m 06s
rm -Rf /Volumes/Builds/packages/big-sur-x86_64/results/4.4/fru.Rcheck/00_pkg_src/fru/src/.cargo
rm -Rf fru/target/release/build 
ERROR: compilation failed for package ‘fru’
* removing ‘/Volumes/Builds/packages/big-sur-x86_64/results/4.4/fru.Rcheck/fru’