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Merged
coatless merged 2 commits into from
Nov 18, 2025
Merged

Suggested determination of OpenCL Target Version (Closes #9) #11

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aca96da
Suggested determination of OpenCL Target Version
eddelbuettel Nov 18, 2025
50775ec
Tweaks based on code review
eddelbuettel Nov 18, 2025
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43 changes: 28 additions & 15 deletions configure
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Original file line number Diff line number Diff line change
Expand Up @@ -639,6 +639,7 @@ ac_includes_default="\
ac_header_cxx_list=
ac_subst_vars='LTLIBOBJS
LIBOBJS
OPENCL_TARGET_VERSION
SDKPATH
CUDA_HOME
CLBLAS_PREFIX
Expand Down Expand Up @@ -4581,6 +4582,9 @@ CLBLAS_PREFIX=""
CUDA_HOME=""
SDKPATH=""

## Use common current version on non-macOS systems
OPENCL_TARGET_VERSION=300

## =============================================================================
## OpenCL Detection
## =============================================================================
Expand Down Expand Up @@ -4668,6 +4672,10 @@ printf "%s\n" "$as_me: WARNING: You may need to install Xcode Command Line Tools
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: Or use CUDA if you have an NVIDIA GPU" >&5
printf "%s\n" "$as_me: WARNING: Or use CUDA if you have an NVIDIA GPU" >&2;}
fi

## Use minimum version to match OpenCL on macOS
OPENCL_TARGET_VERSION=120

else
## Linux/Unix: Check for CL/opencl.h header
ac_header= ac_cache=
Expand Down Expand Up @@ -5254,22 +5262,24 @@ fi
printf "%s\n" "$as_me: " >&6;}
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: GPU Backend Configuration Summary:" >&5
printf "%s\n" "$as_me: GPU Backend Configuration Summary:" >&6;}
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: Platform: ${RSysinfoName}" >&5
printf "%s\n" "$as_me: Platform: ${RSysinfoName}" >&6;}
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: C++ Standard: C++14" >&5
printf "%s\n" "$as_me: C++ Standard: C++14" >&6;}
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: OpenCL: ${HAVE_OPENCL}" >&5
printf "%s\n" "$as_me: OpenCL: ${HAVE_OPENCL}" >&6;}
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: Platform: ${RSysinfoName}" >&5
printf "%s\n" "$as_me: Platform: ${RSysinfoName}" >&6;}
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: C++ Standard: C++14" >&5
printf "%s\n" "$as_me: C++ Standard: C++14" >&6;}
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: OpenCL: ${HAVE_OPENCL}" >&5
printf "%s\n" "$as_me: OpenCL: ${HAVE_OPENCL}" >&6;}
if test "x${HAVE_OPENCL}" = x1; then
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: CLBlast: ${HAVE_CLBLAST}" >&5
printf "%s\n" "$as_me: CLBlast: ${HAVE_CLBLAST}" >&6;}
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: clBLAS: ${HAVE_CLBLAS}" >&5
printf "%s\n" "$as_me: clBLAS: ${HAVE_CLBLAS}" >&6;}
fi
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: CUDA: ${HAVE_CUDA}" >&5
printf "%s\n" "$as_me: CUDA: ${HAVE_CUDA}" >&6;}
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: Default: ${DEFAULT_BACKEND}" >&5
printf "%s\n" "$as_me: Default: ${DEFAULT_BACKEND}" >&6;}
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: CLBlast: ${HAVE_CLBLAST}" >&5
printf "%s\n" "$as_me: CLBlast: ${HAVE_CLBLAST}" >&6;}
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: clBLAS: ${HAVE_CLBLAS}" >&5
printf "%s\n" "$as_me: clBLAS: ${HAVE_CLBLAS}" >&6;}
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: OpenCL Target: ${OPENCL_TARGET_VERSION}" >&5
printf "%s\n" "$as_me: OpenCL Target: ${OPENCL_TARGET_VERSION}" >&6;}
fi
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: CUDA: ${HAVE_CUDA}" >&5
printf "%s\n" "$as_me: CUDA: ${HAVE_CUDA}" >&6;}
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: Default: ${DEFAULT_BACKEND}" >&5
printf "%s\n" "$as_me: Default: ${DEFAULT_BACKEND}" >&6;}
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: " >&5
printf "%s\n" "$as_me: " >&6;}

Expand Down Expand Up @@ -5352,6 +5362,9 @@ BANDICOOT_LIBS="${BANDICOOT_LIBS} ${LAPACK_BLAS_LIBS}"



## OpenCL target version


ac_config_files="$ac_config_files src/Makevars R/flags.R"

cat >confcache <<\_ACEOF
Expand Down
25 changes: 18 additions & 7 deletions configure.ac
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Original file line number Diff line number Diff line change
Expand Up @@ -96,6 +96,9 @@ CLBLAS_PREFIX=""
CUDA_HOME=""
SDKPATH=""

## Use common current version on non-macOS systems
OPENCL_TARGET_VERSION=300

## =============================================================================
## OpenCL Detection
## =============================================================================
Expand Down Expand Up @@ -157,6 +160,10 @@ if test x"${is_macos}" = x"yes"; then
AC_MSG_WARN([You may need to install Xcode Command Line Tools: xcode-select --install])
AC_MSG_WARN([Or use CUDA if you have an NVIDIA GPU])
fi

## Use minimum version to match OpenCL on macOS
OPENCL_TARGET_VERSION=120

else
## Linux/Unix: Check for CL/opencl.h header
AC_CHECK_HEADER([CL/opencl.h],
Expand Down Expand Up @@ -382,15 +389,16 @@ fi

AC_MSG_NOTICE([])
AC_MSG_NOTICE([GPU Backend Configuration Summary:])
AC_MSG_NOTICE([ Platform: ${RSysinfoName}])
AC_MSG_NOTICE([ C++ Standard: C++14])
AC_MSG_NOTICE([ OpenCL: ${HAVE_OPENCL}])
AC_MSG_NOTICE([ Platform: ${RSysinfoName}])
AC_MSG_NOTICE([ C++ Standard: C++14])
AC_MSG_NOTICE([ OpenCL: ${HAVE_OPENCL}])
if test "x${HAVE_OPENCL}" = x1; then
AC_MSG_NOTICE([ CLBlast: ${HAVE_CLBLAST}])
AC_MSG_NOTICE([ clBLAS: ${HAVE_CLBLAS}])
AC_MSG_NOTICE([ CLBlast: ${HAVE_CLBLAST}])
AC_MSG_NOTICE([ clBLAS: ${HAVE_CLBLAS}])
AC_MSG_NOTICE([ OpenCL Target: ${OPENCL_TARGET_VERSION}])
fi
AC_MSG_NOTICE([ CUDA: ${HAVE_CUDA}])
AC_MSG_NOTICE([ Default: ${DEFAULT_BACKEND}])
AC_MSG_NOTICE([ CUDA: ${HAVE_CUDA}])
AC_MSG_NOTICE([ Default: ${DEFAULT_BACKEND}])
AC_MSG_NOTICE([])

## =============================================================================
Expand Down Expand Up @@ -467,5 +475,8 @@ AC_SUBST([CLBLAS_PREFIX])
AC_SUBST([CUDA_HOME])
AC_SUBST([SDKPATH])

## OpenCL target version
AC_SUBST([OPENCL_TARGET_VERSION])

AC_CONFIG_FILES([src/Makevars R/flags.R])
AC_OUTPUT
2 changes: 1 addition & 1 deletion src/Makevars.in
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Original file line number Diff line number Diff line change
Expand Up @@ -3,7 +3,7 @@
## This file is processed by configure to generate Makevars
## It includes GPU backend configuration (OpenCL, CUDA) and other settings

PKG_CPPFLAGS = -I../inst/include
PKG_CPPFLAGS = -I../inst/include -DCL_TARGET_OPENCL_VERSION=@OPENCL_TARGET_VERSION@

## Compiler flags from configure
PKG_CXXFLAGS = @BANDICOOT_CXXFLAGS@ @OPENMP_CXXFLAGS@
Expand Down