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R.m4
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R.m4
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### R.m4 -- extra macros for configuring R -*- Autoconf -*-
###
### Copyright (C) 1998-2006 R Core Team
###
### This file is part of R.
###
### R is free software; you can redistribute it and/or modify it under
### the terms of the GNU General Public License as published by the Free
### Software Foundation; either version 2 of the License, or (at your
### option) any later version.
###
### R is distributed in the hope that it will be useful, but WITHOUT ANY
### WARRANTY; without even the implied warranty of MERCHANTABILITY or
### FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
### License for more details.
###
### You should have received a copy of the GNU General Public License
### along with R; if not, a copy is available at
### http://www.r-project.org/Licenses/
### * General support macros
## R_ARG_USE
## ---------
AC_DEFUN([R_ARG_USE],
[if test "${withval}" = no; then
use_$1=no
else
use_$1=yes
fi
])# R_ARG_USE
## R_ARG_USE_SYSTEM
## ----------------
AC_DEFUN([R_ARG_USE_SYSTEM],
[if test "${withval}" = no; then
use_system_$1=no
else
use_system_$1=yes
fi
])# R_ARG_USE_SYSTEM
## R_SH_VAR_ADD(VARIABLE, VALUE, [SEPARATOR = " "])
## ------------------------------------------------
## Set sh variable VARIABLE to VALUE if empty (or undefined), or append
## VALUE to the value of VARIABLE, separated by SEPARATOR.
## Currently, safe only if all arguments are literals.
## Useful mostly when we do not know whether VARIABLE is empty or not.
## Should maybe also have a fourth argument to control whether adding
## happens by appending (default) or prepending ...
AC_DEFUN([R_SH_VAR_ADD],
[separator="$3"
test -z "${separator}" && separator=" "
if test -z "${[$1]}"; then
$1="$2"
else
$1="${[$1]}${separator}$2"
fi])# R_SH_VAR_ADD
## R_MISSING_PROG(NAME, PROGRAM)
## -----------------------------
## Simplified variant of AM_MISSING_PROG.
## Set NAME to PROGRAM if this is found and works (in the sense of
## properly implementing --version, or to an appropriate invocation
## if the missing script otherwise.
AC_DEFUN([R_MISSING_PROG],
[AC_MSG_CHECKING([for working $2])
if ($2 --version) < /dev/null > /dev/null 2>&1; then
$1=$2
AC_MSG_RESULT([found])
else
$1="\$(SHELL) \$(top_srcdir)/tools/missing $2"
AC_MSG_RESULT([missing])
fi
AC_SUBST($1)
])# R_MISSING_PROG
### * Programs
## R_PROG_AR
## ---------
AC_DEFUN([R_PROG_AR],
[AC_CHECK_PROGS(AR, [${AR} ar])
: ${ARFLAGS="rc"}
AC_SUBST(ARFLAGS)
])# R_PROG_AR
## R_PROG_INSTALL
## --------------
## Find a good install program.
## We like to provide INSTALL in the top-level Makeconf.
## Hence, if AC_PROG_INSTALL ends up with the 'tools/install-sh' script,
## we need to ensure a relative path (i.e., in case we build in srcdir)
## gets prefixed by top_srcdir. (This would not be necessary if we had
## '@INSTALL@' in each Makefile.in, but we prefer to share ...)
AC_DEFUN([R_PROG_INSTALL],
[AC_REQUIRE([AC_PROG_INSTALL])
case "${INSTALL}" in
[[\\/]]* | ?:[[\\/]]* ) # absolute
;;
*)
INSTALL="\$\(top_srcdir\)/tools/install-sh -c"
;;
esac
case "${host_os}" in
hpux*)
## On some versions of HP-UX (seen on both 10.20 and 11.0) we end up
## a broken install (seen in /opt/imake/bin) which has the default
## permissions wrong (PR#2091). Let's just always use install-sh on
## HP-UX.
INSTALL="\$\(top_srcdir\)/tools/install-sh -c"
;;
esac
])# R_PROG_INSTALL
## R_PROG_PAGER
## ------------
AC_DEFUN([R_PROG_PAGER],
[AC_PATH_PROGS(PAGER, [${PAGER} less more page pg], false)
if test "${PAGER}" = false; then
warn_pager="I could not determine a pager"
AC_MSG_WARN([${warn_pager}])
fi
])# R_PROG_PAGER
## R_PROG_PERL
## -----------
AC_DEFUN([R_PROG_PERL],
[AC_PATH_PROGS(PERL, [${PERL} perl])
if test -n "${PERL}"; then
_R_PROG_PERL_VERSION
fi
if test "${r_cv_prog_perl_v5}" != yes; then
AC_MSG_ERROR([Building R requires Perl >= 5.8.0])
fi
])# R_PROG_PERL
## _R_PROG_PERL_VERSION
## --------------------
## Building the R documentation system (Rdconv and friends) requires
## Perl version 5.8.0 or better.
## Set shell variable r_cv_prog_perl_v5 to 'yes' if a recent enough
## Perl is found, and to 'no' otherwise.
AC_DEFUN([_R_PROG_PERL_VERSION],
[AC_CACHE_CHECK([whether perl version is at least 5.8.0],
[r_cv_prog_perl_v5],
[if ${PERL} -e 'require 5.8.0 or exit 1'; then
r_cv_prog_perl_v5=yes
else
r_cv_prog_perl_v5=no
fi])
])# _R_PROG_PERL_VERSION
## R_PROG_TEXMF
## ------------
AC_DEFUN([R_PROG_TEXMF],
[AC_REQUIRE([R_PROG_PERL])
## dvips is not used to make manuals, only in Rd2dvi and help-print.sh
## the latter via options("dvipscmd"). Also sets R_DVIPSCMD.
AC_PATH_PROGS(DVIPS, [${DVIPS} dvips], dvips)
DVIPSCMD=${ac_cv_path_DVIPS}
if test -z "${DVIPSCMD}"; then
DVIPSCMD=dvips
fi
AC_SUBST(DVIPSCMD)
## TEX PDFTEX LATEX PDFLATEX MAKEINDEX TEXI2DVI are used to make manuals
## LATEXCMD is used for options("latexcmd") (used in help-print.sh).
## LATEXCMD PDFLATEXCMD MAKEINDEXCMD TEXI2DVICMD set default for R_<foo> in etc/Renviron
AC_PATH_PROGS(TEX, [${TEX} tex], )
if test -z "${ac_cv_path_TEX}" ; then
warn_dvi1="you cannot build DVI versions of the R manuals"
AC_MSG_WARN([${warn_dvi1}])
fi
AC_PATH_PROGS(LATEX, [${LATEX} latex], )
LATEXCMD=${ac_cv_path_LATEX}
if test -z "${ac_cv_path_LATEX}"; then
warn_dvi2="you cannot build DVI versions of all the help pages"
AC_MSG_WARN([${warn_dvi2}])
LATEXCMD=latex
fi
AC_SUBST(LATEXCMD)
AC_PATH_PROGS(MAKEINDEX, [${MAKEINDEX} makeindex], )
MAKEINDEXCMD=${ac_cv_path_MAKEINDEX}
if test -z "${MAKEINDEXCMD}"; then
MAKEINDEXCMD=makeindex
fi
AC_SUBST(MAKEINDEXCMD)
AC_PATH_PROGS(PDFTEX, [${PDFTEX} pdftex], )
if test -z "${ac_cv_path_PDFTEX}" ; then
warn_pdf1="you cannot build PDF versions of the R manuals"
AC_MSG_WARN([${warn_pdf1}])
fi
AC_PATH_PROGS(PDFLATEX, [${PDFLATEX} pdflatex], )
PDFLATEXCMD=${ac_cv_path_PDFLATEX}
if test -z "${ac_cv_path_PDFLATEX}" ; then
warn_pdf2="you cannot build PDF versions of all the help pages"
AC_MSG_WARN([${warn_pdf2}])
PDFLATEXCMD=pdflatex
fi
AC_SUBST(PDFLATEXCMD)
R_PROG_MAKEINFO
AC_PATH_PROGS(TEXI2DVI, [${TEXI2DVI} texi2dvi], )
TEXI2DVICMD=${ac_cv_path_TEXI2DVI}
if test -z "${TEXI2DVICMD}"; then
TEXI2DVICMD=texi2dvi
fi
AC_SUBST(TEXI2DVICMD)
: ${R_RD4DVI="ae"}
AC_SUBST(R_RD4DVI)
: ${R_RD4PDF="times,hyper"}
AC_SUBST(R_RD4PDF)
])# R_PROG_TEXMF
## R_PROG_MAKEINFO
## ---------------
AC_DEFUN([R_PROG_MAKEINFO],
[AC_PATH_PROGS(MAKEINFO, [${MAKEINFO} makeinfo])
if test -n "${MAKEINFO}"; then
_R_PROG_MAKEINFO_VERSION
## This test admittedly looks a bit strange ... see R_PROG_PERL.
if test "${PERL}" = "${FALSE}"; then
AC_PATH_PROGS(INSTALL_INFO, [${INSTALL_INFO} install-info], false)
else
INSTALL_INFO="\$(PERL) \$(top_srcdir)/tools/install-info.pl"
AC_SUBST(INSTALL_INFO)
fi
fi
if test "${r_cv_prog_makeinfo_v4}" != yes; then
warn_info="you cannot build info or HTML versions of the R manuals"
AC_MSG_WARN([${warn_info}])
MAKEINFO=""
else
MAKEINFO="${MAKEINFO}"
fi
])# R_PROG_MAKEINFO
## _R_PROG_MAKEINFO_VERSION
## ------------------------
## Building the R Texinfo manuals requires Makeinfo v4.7 or better.
## Set shell variable r_cv_prog_makeinfo_v4 to 'yes' if a recent
## enough Makeinfo is found, and to 'no' otherwise.
## If you change the minimum version here, also change it in
## doc/manual/Makefile.in and doc/manual/R-admin.texi.
AC_DEFUN([_R_PROG_MAKEINFO_VERSION],
[AC_CACHE_CHECK([whether makeinfo version is at least 4.7],
[r_cv_prog_makeinfo_v4],
[makeinfo_version=`${MAKEINFO} --version | \
grep "^makeinfo" | sed 's/[[^)]]*) \(.*\)/\1/'`
makeinfo_version_maj=`echo ${makeinfo_version} | cut -f1 -d.`
makeinfo_version_min=`echo ${makeinfo_version} | \
cut -f2 -d. | tr -dc '0123456789.' `
if test -z "${makeinfo_version_maj}" \
|| test -z "${makeinfo_version_min}"; then
r_cv_prog_makeinfo_v4=no
elif test ${makeinfo_version_maj} -lt 4 \
|| test ${makeinfo_version_min} -lt 7; then
r_cv_prog_makeinfo_v4=no
else
r_cv_prog_makeinfo_v4=yes
fi])
])# _R_PROG_MAKEINFO_VERSION
## R_PROG_BROWSER
## --------------
## xdg-open is the freedesktop.org interface to kfmclient/gnome-open
AC_DEFUN([R_PROG_BROWSER],
[if test -z "${R_BROWSER}"; then
AC_PATH_PROGS(R_BROWSER, [firefox mozilla galeon opera xdg-open kfmclient gnome-moz-remote open])
fi
if test -z "${R_BROWSER}"; then
warn_browser="I could not determine a browser"
AC_MSG_WARN([${warn_browser}])
else
AC_MSG_RESULT([using default browser ... ${R_BROWSER}])
fi
AC_SUBST(R_BROWSER)
])# R_BROWSER
## R_PROG_PDFVIEWER
## ----------------
## Try to determine a PDF viewer.
## According to Jeff Gentry <jgentry@jimmy.harvard.edu>, 'acroread4' is
## the FreeBSD acroread port.
AC_DEFUN([R_PROG_PDFVIEWER],
[AC_PATH_PROGS(R_PDFVIEWER,
[${R_PDFVIEWER} acroread acroread4 evince xpdf gv gnome-gv ggv kghostview open gpdf])
if test -z "${R_PDFVIEWER}"; then
warn_pdfviewer="I could not determine a PDF viewer"
AC_MSG_WARN([${warn_pdfviewer}])
fi
AC_SUBST(R_PDFVIEWER)
])# R_PDFVIEWER
### * C compiler and its characteristics.
## R_PROG_CPP_CPPFLAGS
## -------------------
## In case of gcc, check whether the C preprocessor complains about
## having '/usr/local/include' in its header search path (no matter how
## it came there). GCC 3.1 and 3.2 (at least) give warnings about
## 'changing search order for system directory "/usr/local/include" as
## it has already been specified as a non-system directory' which are at
## least quite annoying.
## <NOTE>
## We currently do not distinguish whether '/usr/local/include' was
## added as the R default, or by an explicit CPPFLAGS arg to configure.
## If we wanted to, we should change
## : ${CPPFLAGS="-I/usr/local/include"}
## in 'configure.ac' by something like
## : ${CPPFLAGS=${r_default_CPPFLAGS="-I/usr/local/include"}}
## and test whether r_default_CPPFLAGS is non-empty.
## </NOTE>
AC_DEFUN([R_PROG_CPP_CPPFLAGS],
[AC_REQUIRE([AC_PROG_CC])
AC_REQUIRE([AC_PROG_CPP])
if test "${GCC}" = yes; then
AC_LANG_PUSH(C)
AC_LANG_CONFTEST([AC_LANG_PROGRAM()])
if ${CPP} ${CPPFLAGS} conftest.${ac_ext} 2>&1 1>/dev/null | \
grep 'warning:.*system directory.*/usr/local/include' >/dev/null; then
CPPFLAGS=`echo ${CPPFLAGS} | \
sed 's|\(.*\)-I/usr/local/include *\(.*\)|\1\2|'`
fi
rm -f conftest.${ac_ext}
AC_LANG_POP(C)
fi])# R_PROG_CPP_CPPFLAGS
## R_PROG_CC_VERSION
## -----------------
## Determine the version of the C compiler (currently only for gcc).
AC_DEFUN([R_PROG_CC_VERSION],
[AC_REQUIRE([AC_PROG_CC])
CC_VERSION=
if test "${GCC}" = yes; then
CC_VERSION=`${CC} -v 2>&1 | grep "^.*g.. version" | \
sed -e 's/^.*g.. version *//'`
fi])# R_PROG_CC_VERSION
## R_PROG_CC_M
## -----------
## Check whether we can figure out C Make dependencies.
AC_DEFUN([R_PROG_CC_M],
[AC_REQUIRE([R_PROG_CC_VERSION])
AC_MSG_CHECKING([whether we can compute C Make dependencies])
AC_CACHE_VAL([r_cv_prog_cc_m],
[echo "#include <math.h>" > conftest.c
## No real point in using AC_LANG_* and ${ac_ext}, as we need to create
## hard-wired suffix rules.
## Another obvious candidate to try is '${MAKEDEPEND-makedepend} -f-'.
## However, this does not work out of the box when srcdir and builddir
## are different, as it creates dependencies of the form
## ${srcdir}/foo.o: /path/to/bar.h
## Could be made to work, of course ...
## Note also that it does not create a 'conftest.o: conftest.c' line.
## For gcc 3.2 or better, we want to use '-MM' in case this works.
cc_minus_MM=false
if test "${GCC}" = yes; then
case "${CC_VERSION}" in
1.*|2.*|3.[[01]]*) ;;
*) cc_minus_MM="${CC} -MM" ;;
esac
fi
for prog in "${cc_minus_MM}" "${CC} -M" "${CPP} -M" "cpp -M"; do
if ${prog} conftest.c 2>/dev/null | \
grep 'conftest.o: conftest.c' >/dev/null; then
r_cv_prog_cc_m="${prog}"
break
fi
done])
if test -z "${r_cv_prog_cc_m}"; then
AC_MSG_RESULT([no])
else
AC_MSG_RESULT([yes, using ${r_cv_prog_cc_m}])
fi
])# R_PROG_CC_M
## R_PROG_CC_C_O_LO
## ----------------
## Check whether the C compiler supports '-c -o FILE.lo'.
AC_DEFUN([R_PROG_CC_C_O_LO],
[AC_CACHE_CHECK([whether ${CC} supports -c -o FILE.lo],
[r_cv_prog_cc_c_o_lo],
[test -d TMP || mkdir TMP
echo "int some_variable = 0;" > conftest.c
## No real point in using AC_LANG_* and ${ac_ext}, as we need to create
## hard-wired suffix rules.
ac_try='${CC} ${CFLAGS} -c conftest.c -o TMP/conftest.lo 1>&AS_MESSAGE_LOG_FD'
if AC_TRY_EVAL(ac_try) \
&& test -f TMP/conftest.lo \
&& AC_TRY_EVAL(ac_try); then
r_cv_prog_cc_c_o_lo=yes
else
r_cv_prog_cc_c_o_lo=no
fi
rm -rf conftest* TMP])
])# R_PROG_CC_C_O_LO
## R_PROG_CC_MAKEFRAG
## ------------------
## Generate a Make fragment with suffix rules for the C compiler.
## Used for both building R (Makeconf) and add-ons (etc/Makeconf).
AC_DEFUN([R_PROG_CC_MAKEFRAG],
[r_cc_rules_frag=Makefrag.cc
AC_REQUIRE([R_PROG_CC_M])
cat << \EOF > ${r_cc_rules_frag}
.c.o:
$(CC) $(ALL_CPPFLAGS) $(ALL_CFLAGS) -c $< -o $[@]
EOF
if test -n "${r_cv_prog_cc_m}"; then
cat << EOF >> ${r_cc_rules_frag}
.c.d:
@echo "making \$[@] from \$<"
@${r_cv_prog_cc_m} \$(ALL_CPPFLAGS) $< > \$[@]
EOF
else
cat << \EOF >> ${r_cc_rules_frag}
.c.d:
@echo > $[@]
EOF
fi
AC_SUBST_FILE(r_cc_rules_frag)
])# R_PROG_CC_MAKEFRAG
## R_PROG_CC_LO_MAKEFRAG
## ---------------------
## Generate a Make fragment with suffix rules for the C compiler.
## Used for both building R (Makeconf) and add-ons (etc/Makeconf).
## Need to make .lo files in src/nmath/standalone only
## NB test -d .libs || mkdir .libs can be run more than once
## and hence race when a parallel make is used
AC_DEFUN([R_PROG_CC_LO_MAKEFRAG],
[r_cc_lo_rules_frag=Makefrag.cc_lo
AC_REQUIRE([R_PROG_CC_C_O_LO])
if test "${r_cv_prog_cc_c_o_lo}" = yes; then
cat << \EOF > ${r_cc_lo_rules_frag}
.c.lo:
$(CC) $(ALL_CPPFLAGS) $(ALL_CFLAGS_LO) -c $< -o $[@]
EOF
else
cat << \EOF > ${r_cc_lo_rules_frag}
.c.lo:
@-test -d .libs || mkdir .libs
$(CC) $(ALL_CPPFLAGS) $(ALL_CFLAGS_LO) -c $< -o .libs/$[*].o
mv .libs/$[*].o $[*].lo
EOF
fi
AC_SUBST_FILE(r_cc_lo_rules_frag)
])# R_PROG_CC_LO_MAKEFRAG
## R_PROG_CC_FLAG(FLAG, [ACTION-IF-TRUE])
## ---------------------------------------
## Check whether the C compiler handles command line option FLAG,
## and set shell variable r_cv_prog_cc_flag_SFLAG accordingly (where
## SFLAG is a shell-safe transliteration of FLAG).
## In addition, execute ACTION-IF-TRUE in case of success.
AC_DEFUN([R_PROG_CC_FLAG],
[ac_safe=AS_TR_SH($1)
AC_MSG_CHECKING([whether ${CC} accepts $1])
AC_CACHE_VAL([r_cv_prog_cc_flag_${ac_safe}],
[AC_LANG_PUSH(C)
r_save_CFLAGS="${CFLAGS}"
CFLAGS="${CFLAGS} $1"
AC_LINK_IFELSE([AC_LANG_PROGRAM()],
[eval "r_cv_prog_cc_flag_${ac_safe}=yes"],
[eval "r_cv_prog_cc_flag_${ac_safe}=no"])
CFLAGS="${r_save_CFLAGS}"
AC_LANG_POP(C)
])
if eval "test \"`echo '$r_cv_prog_cc_flag_'$ac_safe`\" = yes"; then
AC_MSG_RESULT([yes])
[$2]
else
AC_MSG_RESULT([no])
fi
])# R_PROG_CC_FLAG
## R_PROG_CC_FLAG_D__NO_MATH_INLINES
## ---------------------------
## In glibc 2.1, inline version [x86] of exp was broken (exp(-Inf) = NaN).
## We fix this by adding '-D__NO_MATH_INLINES' to R_XTRA_CFLAGS rather
## than AC_DEFINE(__NO_MATH_INLINES) as the former also takes care of
## compiling C code for add-on packages.
AC_DEFUN([R_PROG_CC_FLAG_D__NO_MATH_INLINES],
[AC_CACHE_CHECK([whether C runtime needs -D__NO_MATH_INLINES],
[r_cv_c_no_math_inlines],
[AC_RUN_IFELSE([AC_LANG_SOURCE([[
#include <math.h>
#if defined(__GLIBC__)
#include <math.h>
int main () {
double x, y;
x = -1./0.;
y = exp(x);
exit (y != 0.);
}
#else
int main () {
exit(0);
}
#endif
]])],
[r_cv_c_no_math_inlines=no],
[r_cv_c_no_math_inlines=yes],
[r_cv_c_no_math_inlines=no])])
if test "${r_cv_c_no_math_inlines}" = yes; then
R_SH_VAR_ADD(R_XTRA_CFLAGS, [-D__NO_MATH_INLINES])
fi
])# R_PROG_CC_FLAG_D__NO_MATH_INLINES
## R_C_OPTIEEE
## -----------
## Check whether the C compiler needs '-OPT:IEEE_NaN_inf=ON' to
## correctly deal with IEEE NaN/Inf.
## This flag is needed for the native SGI C compiler.
## If needed, add the flag to R_XTRA_CFLAGS.
AC_DEFUN([R_C_OPTIEEE],
[AC_CACHE_CHECK([whether C compiler needs -OPT:IEEE_NaN_inf=ON],
[r_cv_c_optieee],
[AC_RUN_IFELSE([AC_LANG_SOURCE([[
#include <math.h>
#include <stdlib.h>
#include <ieeefp.h>
int main () {
double x = 0;
fpsetmask(0); x = x / x; exit (x != x);
}
]])],
[r_cv_c_optieee=yes],
[r_cv_c_optieee=no],
[r_cv_c_optieee=no])])
if test "${r_cv_c_optieee}" = yes; then
R_SH_VAR_ADD(R_XTRA_CFLAGS, [-OPT:IEEE_NaN_inf=ON])
fi
])# R_C_OPTIEEE
## R_C_INLINE
## ----------
## modified version of AC_C_INLINE to use R_INLINE not inline
AC_DEFUN([R_C_INLINE],
[AC_REQUIRE([AC_PROG_CC_STDC])dnl
AC_CACHE_CHECK([for inline], r_cv_c_inline,
[r_cv_c_inline=""
for ac_kw in inline __inline__ __inline; do
AC_COMPILE_IFELSE([AC_LANG_SOURCE(
[#ifndef __cplusplus
static $ac_kw int static_foo () {return 0; }
$ac_kw int foo () {return 0; }
#endif
])],
[r_cv_c_inline=$ac_kw; break])
done
])
case $r_cv_c_inline in
no) AC_DEFINE(R_INLINE,,
[Define as `inline', or `__inline__' or `__inline'
if that's what the C compiler calls it,
or to nothing if it is not supported.]) ;;
*) AC_DEFINE_UNQUOTED(R_INLINE, $r_cv_c_inline) ;;
esac
])# R_C_INLINE
### * C++ compiler and its characteristics.
## R_PROG_CXX_M
## ------------
## Check whether the C++ compiler accepts '-M' for generating
## dependencies.
AC_DEFUN([R_PROG_CXX_M],
[AC_REQUIRE([R_PROG_CC_M])
AC_CACHE_CHECK([whether ${CXX} accepts -M for generating dependencies],
[r_cv_prog_cxx_m],
[echo "#include <math.h>" > conftest.cc
## No real point in using AC_LANG_* and ${ac_ext}, as we need to create
## hard-wired suffix rules. We could be a bit more careful as we
## actually only test suffix '.cc'.
if test -n "`${CXX} -M conftest.cc 2>/dev/null | grep conftest`"; then
r_cv_prog_cxx_m=yes
else
r_cv_prog_cxx_m=no
fi])
])# R_PROG_CXX_M
## R_PROG_CXX_MAKEFRAG
## -------------------
## Generate a Make fragment with suffix rules for the C++ compiler.
## Used for both building R (Makeconf) and add-ons (etc/Makeconf).
AC_DEFUN([R_PROG_CXX_MAKEFRAG],
[r_cxx_rules_frag=Makefrag.cxx
AC_REQUIRE([R_PROG_CXX_M])
cat << \EOF > ${r_cxx_rules_frag}
.cc.o:
$(CXX) $(ALL_CPPFLAGS) $(ALL_CXXFLAGS) -c $< -o $[@]
.cpp.o:
$(CXX) $(ALL_CPPFLAGS) $(ALL_CXXFLAGS) -c $< -o $[@]
.C.o:
$(CXX) $(ALL_CPPFLAGS) $(ALL_CXXFLAGS) -c $< -o $[@]
EOF
if test "${r_cv_prog_cxx_m}" = yes; then
cat << \EOF >> ${r_cxx_rules_frag}
.cc.d:
@echo "making $[@] from $<"
@$(CXX) -M $(ALL_CPPFLAGS) $< > $[@]
.cpp.d:
@echo "making $[@] from $<"
@$(CXX) -M $(ALL_CPPFLAGS) $< > $[@]
.C.d:
@echo "making $[@] from $<"
@$(CXX) -M $(ALL_CPPFLAGS) $< > $[@]
EOF
else
cat << \EOF >> ${r_cxx_rules_frag}
.cc.d:
@echo > $[@]
.cpp.d:
@echo > $[@]
.C.d:
@echo > $[@]
EOF
fi
AC_SUBST_FILE(r_cxx_rules_frag)
])# R_PROG_CXX_MAKEFRAG
## R_PROG_CXX_FLAG
## ---------------
## Check whether the C++ compiler handles command line option FLAG,
## and set shell variable r_cv_prog_cc_flag_SFLAG accordingly (where
## SFLAG is a shell-safe transliteration of FLAG).
## In addition, execute ACTION-IF-TRUE in case of success.
AC_DEFUN([R_PROG_CXX_FLAG],
[ac_safe=AS_TR_SH($1)
AC_MSG_CHECKING([whether ${CXX-c++} accepts $1])
AC_CACHE_VAL([r_cv_prog_cxx_flag_${ac_safe}],
[AC_LANG_PUSH(C++)
r_save_CXXFLAGS="${CXXFLAGS}"
CXXFLAGS="${CXXFLAGS} $1"
AC_LINK_IFELSE([AC_LANG_PROGRAM()],
[eval "r_cv_prog_cxx_flag_${ac_safe}=yes"],
[eval "r_cv_prog_cxx_flag_${ac_safe}=no"])
CXXFLAGS="${r_save_CXXFLAGS}"
AC_LANG_POP(C++)
])
if eval "test \"`echo '$r_cv_prog_cxx_flag_'$ac_safe`\" = yes"; then
AC_MSG_RESULT([yes])
[$2]
else
AC_MSG_RESULT([no])
fi
])# R_PROG_CXX_FLAG
### * Fortran 77 compiler/converter and its characteristics.
## R_PROG_F77
## ----------
## Find a Fortran 77 compiler
##
## If we have not been forced to use a particular Fortran compiler, try
## to find one using one of the several common names. The list is based
## on what the current autoconf CVS contains (2005-05-21). This says,
##
## <QUOTE>
## Known compilers:
## f77/f90/f95: generic compiler names
## g77: GNU Fortran 77 compiler
## gfortran: putative GNU Fortran 95+ compiler (in progress)
## ftn: native Fortran 95 compiler on Cray X1
## cf77: native F77 compiler under older Crays (prefer over fort77)
## fort77: native F77 compiler under HP-UX (and some older Crays)
## frt: Fujitsu F77 compiler
## pgf77/pgf90/pghpf/pgf95: Portland Group F77/F90/F95 compilers
## xlf/xlf90/xlf95: IBM (AIX) F77/F90/F95 compilers
## lf95: Lahey-Fujitsu F95 compiler
## fl32: Microsoft Fortran 77 "PowerStation" compiler
## af77: Apogee F77 compiler for Intergraph hardware running CLIX
## epcf90: "Edinburgh Portable Compiler" F90
## fort: Compaq (now HP) Fortran 90/95 compiler for Tru64 and Linux/Alpha
## ifort, previously ifc: Intel Fortran 95 compiler for Linux/x86
## efc: Intel Fortran 95 compiler for IA64
## </QUOTE>
##
## and uses the following lists:
## F95: f95 fort xlf95 ifort ifc efc pgf95 lf95 gfortran ftn
## F90: f90 xlf90 pgf90 pghpf epcf90
## F77: g77 f77 xlf frt pgf77 cf77 fort77 fl32 af77
##
## We use basically the same, with the following exceptions:
## * On HP-UX fort77 is the POSIX-compatible native compiler and
## f77 is not: hence we need look for fort77 first!
## <FIXME>
## Is this still true?
## </FIXME>
## * It seems that g95 has been resurrected, see www.g95.org, hence we
## add this to the list of F95 compilers.
## * Older versions of the Autoconf code used to have 'fc' as a wrapper
## around f2c (last in the list). It no longer has, but we still do,
## in src/scripts, but it must be specified manually.
## <FIXME>
## Is this still needed?
## </FIXME>
## * If the C compiler is gcc, we try looking for a matching GCC Fortran
## compiler (gfortran for 4.x, g77 for 3.x) first. This should handle
## problems if GCC 4.x and 3.x suites are installed and, depending on
## the gcc default, the "wrong" GCC Fortran compiler is picked up (as
## reported by Bill Northcott <w.northcott@unsw.edu.au> for OSX with
## 4.0 as default and g77 around and the "old" search order F77 F95
## F90 in use).
AC_DEFUN([R_PROG_F77],
[AC_BEFORE([$0], [AC_PROG_LIBTOOL])
AC_REQUIRE([R_PROG_CC_VERSION])
if test -n "${F77}"; then
AC_MSG_RESULT([defining F77 to be ${F77}])
else
F77=
F95_compilers="f95 fort xlf95 ifort ifc efc pgf95 lf95 gfortran ftn g95"
F90_compilers="f90 xlf90 pgf90 pghpf epcf90"
case "${host_os}" in
hpux*)
F77_compilers="g77 fort77 f77 xlf frt pgf77 cf77 fl32 af77" ;;
*)
F77_compilers="g77 f77 xlf frt pgf77 cf77 fort77 fl32 af77" ;;
esac
GCC_Fortran_compiler=
if test "${GCC}" = yes; then
case "${CC_VERSION}" in
3.*) GCC_Fortran_compiler=g77 ;;
4.*) GCC_Fortran_compiler=gfortran ;;
esac
fi
AC_CHECK_PROGS(F77, [ ${GCC_Fortran_compiler} ${F95_compilers} \
${F90_compilers} ${F77_compilers} fc ])
fi
if test -n "${F77}"; then
## If the above 'found' a Fortran 77 compiler, we run AC_PROG_F77 as
## this does additional testing (GNU, '-g', ...).
AC_PROG_F77
else
AC_MSG_ERROR([No F77 compiler found])
fi
])# R_PROG_F77
## R_PROG_F77_FLIBS
## ----------------
## Run AC_F77_LIBRARY_LDFLAGS, and fix some known problems with FLIBS.
## Only do this if the user has not already set FLIBS.
AC_DEFUN([R_PROG_F77_FLIBS],
[AC_BEFORE([$0], [AC_F77_LIBRARY_LDFLAGS])
if test -z "${FLIBS}"; then
##
## Currently (Autoconf 2.50 or better, it seems) FLIBS also contains all
## elements of LIBS when AC_F77_LIBRARY_LDFLAGS is run. This is because
## _AC_PROG_F77_V_OUTPUT() uses 'eval $ac_link' for obtaining verbose
## linker output, and AC_LANG(Fortran 77) sets up ac_link to contain
## LIBS. Most likely a bug, and a nuisance in any case ...
## But we cannot simply eliminate the elements in FLIBS duplicated from
## LIBS (e.g. '-lm' should be preserved). Hence, we try to call
## AC_F77_LIBRARY_LDFLAGS() with LIBS temporarily set to empty.
r_save_LIBS="${LIBS}"
LIBS=
AC_F77_LIBRARY_LDFLAGS
if test -z "${MAIN_LD}" ; then
LIBS=
R_C_LIBRARY_LDFLAGS
else
CLIBS=
fi
LIBS="${r_save_LIBS}"
## Currently g77 on Darwin links against '-lcrt1.o' (and for GCC 3.1 or
## better also against '-lcrtbegin.o'), which (unlike '-lcrt0.o') are
## not stripped by AC_F77_LIBRARY_LDFLAGS. This in particular causes
## R_PROG_F77_CC_COMPAT to fail. Hence, we make sure all -lcrt*.o are
## removed. In Addition, -lmx and -lSystem are implicit and their
## manual inclusion leads to ordering problems (remove when autoconf
## is fixed - supposedly the CVS version is, but 2.6.0 is not).
##
## Native f90 on HPUX 11 comes up with '-l:libF90.a' causing trouble
## when using gcc for linking. The '-l:' construction is similar to
## plain '-l' except that search order (archive/shared) given by '-a'
## is not important. We escape such flags via '-Wl,' in case of gcc.
## Note that the current Autoconf CVS uses _AC_LINKER_OPTION for a
## similar purpose when computing FLIBS: this uses '-Xlinker' escapes
## for gcc and does nothing otherwise. Note also that we cannot simply
## unconditionally escape with '${wl}' from libtool as on HPUX we need
## SHLIB_LD=ld for native C compilers (problem with non-PIC 'crt0.o',
## see 'Individual platform overrides' in section 'DLL stuff' in file
## 'configure.ac'.
##
## Using the Intel Fortran compiler (ifc) one typically gets incorrect
## flags, as the output from _AC_PROG_F77_V_OUTPUT() contains double
## quoted options, e.g. "-mGLOB_options_string=......", see also e.g.
## http://www.octave.org/octave-lists/archive/octave-maintainers.2002/msg00038.html.
## One possible solution is to change AC_F77_LIBRARY_LDFLAGS() to remove
## double quotes for ifc, as it already does for the Cray cft90. As we
## prefer not to overload Autoconf code, we try to fix things here ...
##
## As of 2.1.0 we try to tidy this up a bit.
## 1) -lfrtbegin and -lgfortranbegin are used by g77/gfortran only for a
## Fortran main program, which we do not have.
## 2) g77 also tends to duplicate paths via ../../.., so we canonicalize
## paths and remove duplicates.
## 3) We do not need -L/lib etc, nor those in LDFLAGS
## 4) We exclude path with CC will include when linking.
##
## First try to fathom out what -Lfoo commands are unnecessary.
case "${host_os}" in
linux*)
r_libpath_default="/usr/lib64 /lib64 /usr/lib /lib"
;;
solaris*)
r_libpath_default="/usr/lib /lib"
;;
*)
r_libpath_default=
;;
esac
r_extra_libs=
for arg in ${LDFLAGS} ${CLIBS}; do
case "${arg}" in
-L*)
lib=`echo ${arg} | sed "s/^-L//"`
test -d "${lib}" || continue
## Canonicalize (/usr/lib/gcc-lib/i686-linux/3.4.3/../../..).
lib=`cd "${lib}" && ${GETWD}`
r_extra_libs="${r_extra_libs} $lib"
;;
esac
done
flibs=
if test "${GCC}" = yes; then
linker_option="-Wl,"
else
linker_option=
fi
r_save_flibs=""
for arg in ${FLIBS}; do
case "${arg}" in
## this is not for a Fortran main program
-lcrt*.o | -lfrtbegin | -lgfortranbegin | -lmx | -lSystem)
;;
-[[a-zA-Z]]/*\" | -[[a-zA-Z]]*\\) # ifc
;;
-l:*)
flibs="${flibs} ${linker_option}${arg}"
;;
-L*)
lib=`echo ${arg} | sed "s/^-L//"`
## Do not add non-existent directories.
test -d "${lib}" || continue
## Canonicalize (/usr/lib/gcc-lib/i686-linux/3.4.3/../../..).
lib=`cd "${lib}" && ${GETWD}`
r_want_lib=true
## Do not add something twice nor default paths nor those in LDFLAGS
for dir in ${r_save_flibs} ${r_libpath_default} ${r_extra_libs}; do
if test "${dir}" = "${lib}"; then
r_want_lib=false
break
fi
done
if test x"${r_want_lib}" = xtrue; then
flibs="${flibs} -L${lib}"
r_save_flibs="${r_save_flibs} ${lib}"
fi
;;
*)
flibs="${flibs} ${arg}"
;;
esac
done
FLIBS="${flibs}"
fi
])# R_PROG_F77_FLIBS
## R_PROG_F77_APPEND_UNDERSCORE
## ----------------------------
## See if the Fortran 77 compiler appends underscores.
## What we really should do is determine how to properly mangle the
## names of C/C++ identifiers (potentially containing underscores) so
## that they match the name-mangling scheme used by the Fortran 77
## compiler. Autoconf 2.50 or better has macros F77_FUNC(name, NAME)
## and F77_FUNC_(name, NAME) for this. However, the F77_* macros in
## the R API have one argument only and therefore cannot deal with
## Fortran 77 compilers which convert to upper case or add an extra
## underscore for identifiers containing underscores. We give an error
## in the former case; as ISO Fortran 77 does not allow underscores in
## function names, we do nothing about the latter.
AC_DEFUN([R_PROG_F77_APPEND_UNDERSCORE],
[AC_REQUIRE([AC_F77_WRAPPERS])
## DANGER! We really needs the results of _AC_F77_NAME_MANGLING as
## stored in the cache var ac_cv_f77_mangling which is not documented
## and hence may change ...
case "${ac_cv_f77_mangling}" in
"upper "*)
AC_MSG_WARN([Fortran compiler uses uppercase external names])
AC_MSG_ERROR([cannot use Fortran])
;;
esac
AC_MSG_CHECKING([whether ${F77} appends underscores to external names])
AC_CACHE_VAL([r_cv_prog_f77_append_underscore],
[case "${ac_cv_f77_mangling}" in
*", underscore, "*)
r_cv_prog_f77_append_underscore=yes
;;
*", no underscore, "*)
r_cv_prog_f77_append_underscore=no
;;
esac])
if test -n "${r_cv_prog_f77_append_underscore}"; then
AC_MSG_RESULT([${r_cv_prog_f77_append_underscore}])
else
AC_MSG_RESULT([unknown])
AC_MSG_ERROR([cannot use Fortran])
fi
if test "${r_cv_prog_f77_append_underscore}" = yes; then
AC_DEFINE(HAVE_F77_UNDERSCORE, 1,
[Define if your Fortran compiler appends an underscore to
external names.])
fi
AC_MSG_CHECKING([whether ${F77} appends extra underscores to external names])
AC_CACHE_VAL([r_cv_prog_f77_append_second_underscore],
[case "${ac_cv_f77_mangling}" in
*", extra underscore")
r_cv_prog_f77_append_second_underscore=yes
;;
*", no extra underscore")
r_cv_prog_f77_append_second_underscore=no
;;
esac])
if test -n "${r_cv_prog_f77_append_second_underscore}"; then
AC_MSG_RESULT([${r_cv_prog_f77_append_second_underscore}])
else
AC_MSG_RESULT([unknown])
AC_MSG_ERROR([cannot use Fortran])
fi
if test "${r_cv_prog_f77_append_second_underscore}" = yes; then
AC_DEFINE(HAVE_F77_EXTRA_UNDERSCORE, 1,
[Define if your Fortran compiler appends an extra_underscore to
external names containing an underscore.])
fi
])# R_PROG_F77_APPEND_UNDERSCORE
## R_PROG_F77_CAN_RUN
## --------------------
## Check whether the C/Fortran set up produces runnable code, as
## a preliminary to the compatibility tests.
## May fail if Fortran shared libraries are not in the library path.
## As from 2.4.0 use the same code as the compatibility test, as
## on at least one system the latter actually used -lgfortran
## (which was broken) and the previous test here did not.
AC_DEFUN([R_PROG_F77_CAN_RUN],
[AC_REQUIRE([AC_CHECK_LIBM])
AC_MSG_CHECKING([whether mixed C/Fortran code can be run])
AC_CACHE_VAL([r_cv_prog_f77_can_run],
[cat > conftestf.f <<EOF
subroutine cftest(a, b, x, y)
integer a(3), b(2)
double precision x(3), y(3)
b(1) = a(3)/a(2)
b(2) = a(3) - a(1)*a(2)
y(1) = dble(a(3))/x(2)
y(2) = x(3)*x(1)
y(3) = (x(2)/x(1)) ** a(1)
end
EOF
${F77} ${FFLAGS} -c conftestf.f 1>&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD
## Yes we need to double quote this ...
[cat > conftest.c <<EOF
#include <math.h>
#include <stdlib.h>
#include "confdefs.h"
#ifdef HAVE_F77_UNDERSCORE
# define F77_SYMBOL(x) x ## _
#else
# define F77_SYMBOL(x) x
#endif
int main () {
exit(0);
}
EOF]
if ${CC} ${CFLAGS} -c conftest.c 1>&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD; then
## <NOTE>
## This should really use MAIN_LD, and hence come after this is
## determined (and necessary additions to MAIN_LDFLAGS were made).
## But it seems that we currently can always use the C compiler.
## Also, to be defensive there should be a similar test with SHLIB_LD
## and SHLIB_LDFLAGS (and note that on HPUX with native cc we have to
## use ld for SHLIB_LD) ...
if ${CC} ${LDFLAGS} ${MAIN_LDFLAGS} -o conftest${ac_exeext} \
conftest.${ac_objext} conftestf.${ac_objext} ${FLIBS} \
${LIBM} 1>&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD;
## </NOTE>
then
## redirect error messages to config.log
output=`./conftest${ac_exeext} 2>&AS_MESSAGE_LOG_FD`
if test ${?} = 0; then
r_cv_prog_f77_can_run=yes
fi
fi
fi