Hi everybody, for our new R package "Netboost" we have a problem about non portable compiler flags. Basically we support AVX in our own C++ code (using compiler intrinsics to use the AVX units). Of course we have a non-AVX code path.
For building we use autotools and configure to determine at installation time if the AVX unit is available and supported by the given compilers. If available then compilation is done with AVX, if not, then ordinary code path is used. The problem is the R package test, which does see the set AVX flag in "Makevars" (as Makevars.in is configured to use AVX if the test is executed on a machine supporting AVX). Note: due to bundled software, this is a Linux only package, so no support for Microsoft compilers is required (with other flag names). Is there any way around this warning, which is a real false-positive, as the flag is not set in environments not suitable. Thanks a lot for any help! Jo Details: for testing we use GNU Autotools and the AX_EXT M4-macroset to determine the hardware and compiler support for additional features: https://www.gnu.org/software/autoconf-archive/ax_ext.html configure.ac: m4_include([m4/ax_gcc_x86_avx_xgetbv.m4]) m4_include([m4/ax_gcc_x86_cpuid.m4]) m4_include([m4/ax_check_compile_flag.m4]) m4_include([m4/ax_ext.m4]) # Probe CPU and compilers AX_EXT src/Makevars.in: PKG_CXXFLAGS=`${R_HOME}/bin/Rscript -e "Rcpp:::CxxFlags()"` @SIMD_FLAGS@ Running R CMD CHECK with --as-cran, we get the warning: http://bioconductor.org/spb_reports/netboost_buildreport_20190412033232.html * checking compilation flags used ... WARNING Compilation used the following non-portable flag(s): -Wno-deprecated -maes -mavx -mavx2 -mfma -mmmx -msse -msse3 -msse4.1 -msse4.2 -mssse3 (Basically we only need -mavx and optionally FMA, but AX_EXT sets all). -- Jochen Knaus Institute of Biometry and Statistics Faculty of Medicine and Medical Center - University of Freiburg Office: IMBI library Postal address: Stefan-Meier-Str. 26, D-79104 Freiburg Phone: +49/761/203-5528 Mail: j...@imbi.uni-freiburg.de Homepage: http://www.imbi.uni-freiburg.de [[alternative HTML version deleted]] _______________________________________________ Bioc-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/bioc-devel
