From: Timo Heister Date: Mon, 28 Jun 2021 01:43:02 +0000 (-0400) Subject: only set MPI_CXX_COMPILER if requested X-Git-Tag: v9.3.3-r1~1^2~37^2 X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=165cbc0036da68141e8242ffa35b437f59420add;p=candi.git only set MPI_CXX_COMPILER if requested Setting the compiler wrapper in CMake instead of in CC and CXX is recommended, but only works for recent CMake versions (one configuration I tested requires CMake 3.20 for the intel compiler). With 9.3.1 deal.II supports setting CXX=mpicxx again, so only do the above when a setting in candi.cfg is specified. Works around #202 and fixes feature introduced in #159 --- diff --git a/candi.cfg b/candi.cfg index 93c4bd5..050b1a3 100644 --- a/candi.cfg +++ b/candi.cfg @@ -36,6 +36,12 @@ NATIVE_OPTIMIZATIONS=OFF # Option {ON|OFF}: Enable building of dealii examples? BUILD_EXAMPLES=ON +# Option {ON|OFF}: Unset CXX and set the compiler as MPI_CXX_COMPILER when configuring deal.II +# +# This is recommended for very recent CMake versions but it currently is not reliable enough +# to enable by default. +USE_DEAL_II_CMAKE_MPI_COMPILER=OFF + # Option {ON|OFF}: Run tests after installation? RUN_DEAL_II_TESTS=OFF diff --git a/deal.II-toolchain/packages/dealii.package b/deal.II-toolchain/packages/dealii.package index 1175822..3f490db 100644 --- a/deal.II-toolchain/packages/dealii.package +++ b/deal.II-toolchain/packages/dealii.package @@ -18,8 +18,6 @@ INSTALL_PATH=${ORIG_INSTALL_PATH}/deal.II-${VERSION} CONFOPTS=" \ -D CMAKE_BUILD_TYPE=DebugRelease \ -D DEAL_II_WITH_MPI:BOOL=ON \ --D MPI_CXX_COMPILER=${CXX} \ --D MPI_C_COMPILER=${CC} \ -D DEAL_II_COMPONENT_DOCUMENTATION:BOOL=OFF \ -D DEAL_II_WITH_LAPACK:BOOL=ON \ -D DEAL_II_WITH_UMFPACK:BOOL=ON \ @@ -43,16 +41,22 @@ if [ ${NATIVE_OPTIMIZATIONS} = ON ]; then -D CMAKE_CXX_FLAGS='-march=native'" fi +if [ ${USE_DEAL_II_CMAKE_MPI_COMPILER} = ON ]; then + # Disable CXX, CC for deal.II as recommended in + # https://github.com/dealii/dealii/issues/11478 and set MPI_*_COMPILER + # cmake variables. This only works for recent CMake versions. + CONFOPTS="${CONFOPTS} \ + -D MPI_CXX_COMPILER=${CXX} \ + -D MPI_C_COMPILER=${CC}" + + unset CXX + unset CC +fi + # add the user-specified flags at the end (so things can be overriden): CONFOPTS="${CONFOPTS} \ ${DEAL_II_CONFOPTS}" -# Disable CXX, CC for deal.II as recommended in -# https://github.com/dealii/dealii/issues/11478 . Note the we are -# setting the MPI_*_COMPILER cmake variables above. -unset CXX -unset CC - ################################################################################ # Check if we hit cmake-3.10+ and deal.II v8.5.1 configure error (MPI / FindMPI) # cf. https://github.com/dealii/dealii/issues/5510