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lightgbm-org--lightgbm/R-package/configure.win
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2026-07-13 13:27:18 +08:00

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# Script used to generate `Makevars.win` from `Makevars.win.in`
# on Windows
###########################
# find compiler and flags #
###########################
R_EXE="${R_HOME}/bin${R_ARCH_BIN}/R"
CXX17=`"${R_EXE}" CMD config CXX17`
CXX17STD=`"${R_EXE}" CMD config CXX17STD`
CXX="${CXX17} ${CXX17STD}"
CXXFLAGS=`"${R_EXE}" CMD config CXX17FLAGS`
CPPFLAGS=`"${R_EXE}" CMD config CPPFLAGS`
# LightGBM-specific flags
LGB_CPPFLAGS=""
#########
# Eigen #
#########
LGB_CPPFLAGS="${LGB_CPPFLAGS} -DEIGEN_MPL2_ONLY -DEIGEN_DONT_PARALLELIZE"
###############
# MM_PREFETCH #
###############
ac_mm_prefetch="no"
cat > conftest.cpp <<EOL
#include <xmmintrin.h>
int main() {
int a = 0;
_mm_prefetch(&a, _MM_HINT_NTA);
return 0;
}
EOL
${CXX} ${CXXFLAGS} ${CPPFLAGS} -o conftest conftest.cpp 2>/dev/null && ./conftest && ac_mm_prefetch="yes"
rm -f ./conftest
rm -f ./conftest.cpp
echo "checking whether MM_PREFETCH works...${ac_mm_prefetch}"
if test "${ac_mm_prefetch}" = "yes";
then
LGB_CPPFLAGS="${LGB_CPPFLAGS} -DMM_PREFETCH=1"
fi
############
# MM_ALLOC #
############
ac_mm_malloc="no"
cat > conftest.cpp <<EOL
#include <mm_malloc.h>
int main() {
char *a = (char*)_mm_malloc(8, 16);
_mm_free(a);
return 0;
}
EOL
${CXX} ${CXXFLAGS} ${CPPFLAGS} -o conftest conftest.cpp 2>/dev/null && ./conftest && ac_mm_malloc="yes"
rm -f ./conftest
rm -f ./conftest.cpp
echo "checking whether MM_MALLOC works...${ac_mm_malloc}"
if test "${ac_mm_malloc}" = "yes";
then
LGB_CPPFLAGS="${LGB_CPPFLAGS} -DMM_MALLOC=1"
fi
#############
# INET_PTON #
#############
ac_inet_pton="no"
cat > conftest.cpp <<EOL
#include <ws2tcpip.h>
int main() {
int (*fptr)(int, const char*, void*);
fptr = &inet_pton;
return 0;
}
EOL
${CXX} ${CXXFLAGS} ${CPPFLAGS} -o conftest conftest.cpp 2>/dev/null && ./conftest && ac_inet_pton="yes"
rm -f ./conftest
rm -f ./conftest.cpp
echo "checking whether INET_PTON works...${ac_inet_pton}"
if test "${ac_inet_pton}" = "yes";
then
LGB_CPPFLAGS="${LGB_CPPFLAGS} -DWIN_HAS_INET_PTON=1"
fi
# Generate Makevars.win from Makevars.win.in
sed -e \
"s/@LGB_CPPFLAGS@/$LGB_CPPFLAGS/" \
< src/Makevars.win.in > src/Makevars.win