https://github.com/cran/BRISC
Tip revision: 80875683a98e802b8e9ba0380fd7fbc10f5320e5 authored by Arkajyoti Saha on 29 April 2022, 22:20:17 UTC
version 1.0.5
version 1.0.5
Tip revision: 8087568
configure.ac
### BRISC configure.ac -*- Autoconf -*-
dnl Based on OpenMP detection in R's configure script,
dnl which in turn is based on autoconf's openmp.m4,
dnl with is licensed under GPL-3 with the
dnl Autoconf Configure Script Exception, version 3.0.
# Process this file with autoconf to produce a configure script.
AC_PREREQ([2.69])
AC_INIT(BRISC, m4_esyscmd_s([awk '/^Version:/ {print $2}' DESCRIPTION]))
## Set R_HOME, respecting an environment variable if one is set
: ${R_HOME=$(R RHOME)}
if test -z "${R_HOME}"; then
AC_MSG_ERROR([Could not determine R_HOME.])
fi
## Use R to set CXX and CXXFLAGS
CXX=$(${R_HOME}/bin/R CMD config CXX)
CXXFLAGS=$("${R_HOME}/bin/R" CMD config CXXFLAGS)
## We are using C++
AC_LANG(C++)
AC_REQUIRE_CPP
dnl this the meat of R's m4/openmp.m4
OPENMP_[]_AC_LANG_PREFIX[]FLAGS=
AC_ARG_ENABLE([openmp],
[AS_HELP_STRING([--disable-openmp], [do not use OpenMP])])
if test "$enable_openmp" != no; then
AC_CACHE_CHECK([for $[]_AC_CC[] option to support OpenMP],
[ac_cv_prog_[]_AC_LANG_ABBREV[]_openmp],
[AC_LINK_IFELSE([_AC_LANG_OPENMP],
[ac_cv_prog_[]_AC_LANG_ABBREV[]_openmp='none needed'],
[ac_cv_prog_[]_AC_LANG_ABBREV[]_openmp='unsupported'
for ac_option in -fopenmp -xopenmp -qopenmp \
-openmp -mp -omp -qsmp=omp -homp \
-fopenmp=libomp \
-Popenmp --openmp; do
ac_save_[]_AC_LANG_PREFIX[]FLAGS=$[]_AC_LANG_PREFIX[]FLAGS
_AC_LANG_PREFIX[]FLAGS="$[]_AC_LANG_PREFIX[]FLAGS $ac_option"
AC_LINK_IFELSE([_AC_LANG_OPENMP],
[ac_cv_prog_[]_AC_LANG_ABBREV[]_openmp=$ac_option])
_AC_LANG_PREFIX[]FLAGS=$ac_save_[]_AC_LANG_PREFIX[]FLAGS
if test "$ac_cv_prog_[]_AC_LANG_ABBREV[]_openmp" != unsupported; then
break
fi
done])])
case $ac_cv_prog_[]_AC_LANG_ABBREV[]_openmp in #(
"none needed" | unsupported)
;; #(
*)
OPENMP_[]_AC_LANG_PREFIX[]FLAGS=$ac_cv_prog_[]_AC_LANG_ABBREV[]_openmp ;;
esac
fi
AC_SUBST(OPENMP_CXXFLAGS)
AC_CONFIG_FILES([src/Makevars])
AC_OUTPUT