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configure.ac
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configure.ac
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# Process this file with autoconf to produce a configure script.
AC_CONFIG_SRCDIR([src/R.c])
AC_CONFIG_HEADERS([src/config.h])
# find R home and set CC/CFLAGS
: ${R_HOME=`R RHOME`}
if test -z "${R_HOME}"; then
echo "could not determine R_HOME"
exit 1
fi
RBIN="${R_HOME}/bin/R"
CC=`"${RBIN}" CMD config CC`;
## since R 3.6 we can't use CPP but NEWS recommends $CC -E
CPP="${CC} -E"
CFLAGS=`"${RBIN}" CMD config CFLAGS`
CPPFLAGS=`"${RBIN}" CMD config CPPFLAGS`
if test -n "${PKG_CPPFLAGS}"; then
CPPFLAGS="${CPPFLAGS} ${PKG_CPPFLAGS}"
fi
AC_PROG_CC
LIBS="${PKG_LIBS}"
AC_CHECK_HEADERS([grp.h langinfo.h locale.h netinet/in.h stdlib.h sys/file.h \
sys/ioctl.h sys/socket.h sys/sockio.h sys/syscall.h sys/sendfile.h \
sys/time.h sys/un.h unistd.h])
AC_CHECK_HEADERS([net/if.h net/if_dl.h], [], [],
[#if HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif
])
AC_CHECK_FUNCS([ \
dirfd \
err \
errx \
getexecname \
getrandom \
jrand48 \
llseek \
lchown \
mempcpy \
mkostemp \
nanosleep \
sendfile \
srandom \
strnchr \
strndup \
strnlen \
usleep \
warn \
warnx
])
AC_CHECK_FUNCS([flock],
[#if HAVE_SYS_FILE_H
#include <sys/file.h>
#endif
])
AC_CHECK_MEMBER(struct sockaddr.sa_len,
AC_DEFINE_UNQUOTED(HAVE_SA_LEN,1,[Define if struct sockaddr contains sa_len]),,
[#include <sys/types.h>
#include <sys/socket.h>])
AC_CHECK_HEADERS([dlfcn.h])
AC_SEARCH_LIBS(dlsym, dl, [AC_DEFINE(HAS_DLSYM, 1, [defined if the system supports dlsym])])
## note the libuuid only uses __thread so that's the only one to test for
have_tls=no
AC_MSG_CHECKING([for thread local storage (TLS) support])
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([],[static __thread int x;])],
[have_tls=yes])
AC_MSG_RESULT([$have_tls])
if test x$have_tls = xyes; then
AC_DEFINE(HAVE_TLS, 1, [Thread local storage is supported via __thread])
fi
AC_CONFIG_FILES([src/Makevars])
AC_OUTPUT