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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) 1998-2020 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
### https://www.r-project.org/Licenses/
### Please use dnl for first-col comments within definitions, as
### PD's autoconf leaves ## in but others (e.g. Fedora's) strip them
### * 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, [ACTION-IF-MISSING])
## -----------------------------
## 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) \"\$(abs_top_srcdir)/tools/missing\" $2"
AC_MSG_RESULT([missing])
[$3]
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
dnl case "${host_os}" in
dnl hpux*)
dnl ## On some versions of HP-UX (seen on both 10.20 and 11.0) we end up
dnl ## a broken install (seen in /opt/imake/bin) which has the default
dnl ## permissions wrong (PR#2091). Let's just always use install-sh on
dnl ## HP-UX.
dnl INSTALL="\$\(top_srcdir\)/tools/install-sh -c"
dnl ;;
dnl 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([${warn_pager}])
fi
])# R_PROG_PAGER
## R_PROG_TEXMF
## ------------
AC_DEFUN([R_PROG_TEXMF],
[
dnl PDFTEX PDFLATEX MAKEINDEX TEXI2DVI are used to make manuals
dnl PDFLATEX and MAKEINDEX in the emulation mode of tools::texi2dvi
dnl TEXI2DVICMD sets default for R_TEXI2DVICMD, used for options('texi2dvi')
dnl TEX AND LATEX are no longer used
AC_PATH_PROGS(TEX, [${TEX} tex], )
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], )
if test -z "${ac_cv_path_PDFLATEX}" ; then
warn_pdf2="you cannot build PDF versions of vignettes and help pages"
AC_MSG_WARN([${warn_pdf2}])
fi
AC_PATH_PROGS(MAKEINDEX, [${MAKEINDEX} makeindex], )
R_PROG_TEXI2ANY
AC_PATH_PROGS(TEXI2DVI, [${TEXI2DVI} texi2dvi], )
TEXI2DVICMD=${ac_cv_path_TEXI2DVI}
if test -z "${TEXI2DVICMD}"; then
TEXI2DVICMD=texi2dvi
fi
AC_SUBST(TEXI2DVICMD)
AC_PATH_PROGS(KPSEWHICH, [${KPSEWHICH} kpsewhich], "")
dnl this is deliberately not cached: LaTeX packages change.
dnl zi4.sty has been present since at least 2013/06
dnl inconsolata.sty goes back to 2009, but was briefly removed in 2013.
AC_MSG_CHECKING([for latex inconsolata package])
r_rd4pdf="times,inconsolata,hyper"
if test -n "${KPSEWHICH}"; then
${KPSEWHICH} zi4.sty > /dev/null
if test $? -eq 0; then
AC_MSG_RESULT([found zi4.sty])
else
${KPSEWHICH} inconsolata.sty > /dev/null
if test $? -eq 0; then
AC_MSG_RESULT([found inconsolata.sty])
else
r_rd4pdf="times,hyper"
if test -z "${R_RD4PDF}" ; then
AC_MSG_RESULT([missing])
warn_pdf3="neither inconsolata.sty nor zi4.sty found: PDF vignettes and package manuals will not be rendered optimally"
AC_MSG_WARN([${warn_pdf3}])
fi
fi
fi
fi
: ${R_RD4PDF=${r_rd4pdf}}
AC_SUBST(R_RD4PDF)
])# R_PROG_TEXMF
## R_PROG_TEXI2ANY
## ---------------
AC_DEFUN([R_PROG_TEXI2ANY],
[AC_PATH_PROGS(TEXI2ANY, [${TEXI2ANY} texi2any])
if test -n "${TEXI2ANY}"; then
_R_PROG_TEXI2ANY_VERSION
AC_PATH_PROGS(INSTALL_INFO,
[${INSTALL_INFO} ginstall-info install-info],
false)
AC_SUBST(INSTALL_INFO)
fi
if test "${r_cv_prog_texi2any_v5}" != yes; then
warn_info="you cannot build info or HTML versions of the R manuals"
AC_MSG_WARN([${warn_info}])
TEXI2ANY=""
else
TEXI2ANY="${TEXI2ANY}"
fi
])# R_PROG_TEXI2ANY
## _R_PROG_TEXI2ANY_VERSION
## ------------------------
## Building the R Texinfo manuals requires texinfo v5.1 or later.
## Set shell variable r_cv_prog_texi2any_v5 to 'yes' if a recent
## enough texi2any aka 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_TEXI2ANY_VERSION],
[AC_CACHE_CHECK([whether texi2any version is at least 5.1],
[r_cv_prog_texi2any_v5],
[texi2any_version=`${TEXI2ANY} --version | \
grep -E '^(makeinfo|texi2any)' | sed 's/[[^)]]*) \(.*\)/\1/'`
texi2any_version_maj=`echo ${texi2any_version} | cut -f1 -d.`
texi2any_version_min=`echo ${texi2any_version} | \
cut -f2 -d. | tr -dc '0123456789.' `
if test -z "${texi2any_version_maj}" \
|| test -z "${texi2any_version_min}"; then
r_cv_prog_texi2any_v5=no
elif test ${texi2any_version_maj} -gt 5; then
r_cv_prog_texi2any_v5=yes
elif test ${texi2any_version_maj} -lt 5 \
|| test ${texi2any_version_min} -lt 1; then
r_cv_prog_texi2any_v5=no
else
r_cv_prog_texi2any_v5=yes
fi])
])# _R_PROG_TEXI2ANY_VERSION
## R_PROG_BROWSER
## --------------
## xdg-open is the freedesktop.org interface to kfmclient/gnome-open
AC_DEFUN([R_PROG_BROWSER],
[if test -z "${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 xdg-open evince xpdf gv gnome-gv ggv okular kpdf open gpdf kghostview])
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
dnl No real point in using AC_LANG_* and ${ac_ext}, as we need to create
dnl hard-wired suffix rules.
dnl Another obvious candidate to try is '${MAKEDEPEND-makedepend} -f-'.
dnl However, this does not work out of the box when srcdir and builddir
dnl are different, as it creates dependencies of the form
dnl ${srcdir}/foo.o: /path/to/bar.h
dnl Could be made to work, of course ...
dnl Note also that it does not create a 'conftest.o: conftest.c' line.
dnl For gcc 3.2 or better, we want to use '-MM' in case this works.
dnl Also adopted by clang, so version test is not really appopriate.
cc_minus_MM=false
if test "${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} ${CPPFLAGS} conftest.c 2>/dev/null | \
grep 'conftest.o: conftest.c' >/dev/null; then
r_cv_prog_cc_m="${prog}"
break
fi
done])
if test "${r_cv_prog_cc_m}" = "${cc_minus_MM}"; then
r_cv_prog_cc_m="\$(CC) -MM"
elif test "${r_cv_prog_cc_m}" = "${CC} -M"; then
r_cv_prog_cc_m="\$(CC) -M"
fi
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
dnl No real point in using AC_LANG_* and ${ac_ext}, as we need to create
dnl hard-wired suffix rules.
ac_try='${CC} ${CPPFLAGS} ${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_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
## ----------
## Check whether the C++ compiler can compile code
AC_DEFUN([R_PROG_CXX],
[AC_CACHE_CHECK([whether ${CXX} ${CXXFLAGS} can compile C++ code],
[r_cv_prog_cxx],
[AC_LANG_PUSH([C++])dnl
r_save_CXX="${CXX}"
CXX="${CXX} ${CXXSTD}"
AC_COMPILE_IFELSE([AC_LANG_SOURCE(
[#ifndef __cplusplus
# error "not a C++ compiler"
#endif
#include <cmath>
])],
[r_cv_prog_cxx=yes], [r_cv_prog_cxx=no])
CXX="${r_save_CXX}"
AC_LANG_POP([C++])dnl
])
if test "${r_cv_prog_cxx}" = no; then
CXX=
CXXFLAGS=
CXXSTD=
fi
])# R_PROG_CXX
## R_PROG_CXX_M
## ------------
## Check whether the C++ compiler accepts '-M' for generating
## dependencies.
## Not currently used -- better to use -MM if it were.
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
dnl No real point in using AC_LANG_* and ${ac_ext}, as we need to create
dnl hard-wired suffix rules. We could be a bit more careful as we
dnl actually only test suffix '.cc'.
if test -n "`${CXX} ${CPPFLAGS} -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).
## <FIXME> If the .d rules were actually use, use CXXXPP? </FIXME>
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 $[@]
EOF
if test "${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) $< > $[@]
EOF
else
cat << \EOF >> ${r_cxx_rules_frag}
.cc.d:
@echo > $[@]
.cpp.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 compiler and its characteristics.
## R_PROG_FC_FLIBS
## ----------------
## Run AC_FC_LIBRARY_LDFLAGS rename to FLIBS, and fix some known problems with FLIBS.
## Only do this if the user has not already set FLIBS.
AC_DEFUN([R_PROG_FC_FLIBS],
[AC_BEFORE([$0], [AC_FC_LIBRARY_LDFLAGS])
if test -z "${FLIBS}"; then
dnl
dnl Historical comment
dnl Currently (Autoconf 2.50 or better, it seems) FLIBS also contains all
dnl elements of LIBS when AC_F77_LIBRARY_LDFLAGS is run. This is because
dnl _AC_PROG_F77_V_OUTPUT() uses 'eval $ac_link' for obtaining verbose
dnl linker output, and AC_LANG(Fortran 77) sets up ac_link to contain
dnl LIBS. Most likely a bug, and a nuisance in any case ...
dnl But we cannot simply eliminate the elements in FLIBS duplicated from
dnl LIBS (e.g. '-lm' should be preserved). Hence, we try to call
dnl AC_FC_LIBRARY_LDFLAGS() with LIBS temporarily set to empty.
r_save_LIBS="${LIBS}"
LIBS=
AC_FC_LIBRARY_LDFLAGS
FLIBS=${FCLIBS}
if test -z "${MAIN_LD}" ; then
LIBS=
R_C_LIBRARY_LDFLAGS
else
CLIBS=
fi
LIBS="${r_save_LIBS}"
dnl Comments here are ancient and about F77 version ....
dnl Currently g77 on Darwin links against '-lcrt1.o' (and for GCC 3.1 or
dnl better also against '-lcrtbegin.o'), which (unlike '-lcrt0.o') are
dnl not stripped by AC_F77_LIBRARY_LDFLAGS. This in particular causes
dnl R_PROG_FC_CC_COMPAT to fail. Hence, we make sure all -lcrt*.o are
dnl removed. In Addition, -lmx and -lSystem are implicit and their
dnl manual inclusion leads to ordering problems (remove when autoconf
dnl is fixed - supposedly the CVS version is, but 2.6.0 is not).
dnl
dnl Native f90 on HP-UX 11 comes up with '-l:libF90.a' causing trouble
dnl when using gcc for linking. The '-l:' construction is similar to
dnl plain '-l' except that search order (archive/shared) given by '-a'
dnl is not important. We escape such flags via '-Wl,' in case of gcc.
dnl Note that the current Autoconf CVS uses _AC_LINKER_OPTION for a
dnl similar purpose when computing FLIBS: this uses '-Xlinker' escapes
dnl for gcc and does nothing otherwise. Note also that we cannot simply
dnl unconditionally escape with '${wl}' from libtool as on HP-UX we need
dnl SHLIB_LD=ld for native C compilers (problem with non-PIC 'crt0.o',
dnl see 'Individual platform overrides' in section 'DLL stuff' in file
dnl 'configure.ac'.
dnl
dnl Using the Intel Fortran compiler (ifc) one typically gets incorrect
dnl flags, as the output from _AC_PROG_F77_V_OUTPUT() contains double
dnl quoted options, e.g. "-mGLOB_options_string=......", see also e.g.
dnl http://www.octave.org/octave-lists/archive/octave-maintainers.2002/msg00038.html.
dnl One possible solution is to change AC_F77_LIBRARY_LDFLAGS() to remove
dnl double quotes for ifc, as it already does for the Cray cft90. As we
dnl prefer not to overload Autoconf code, we try to fix things here ...
dnl
dnl As of 2.1.0 we try to tidy this up a bit.
dnl 1) -lfrtbegin and -lgfortranbegin are used by g77/gfortran only for a
dnl Fortran main program, which we do not have.
dnl 2) g77 also tends to duplicate paths via ../../.., so we canonicalize
dnl paths and remove duplicates.
dnl 3) We do not need -L/lib etc, nor those in LDFLAGS
dnl 4) We exclude path with CC will include when linking.
dnl
dnl 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}"
AC_SUBST(FLIBS)
fi
])# R_PROG_FC_FLIBS
## R_PROG_FC_APPEND_UNDERSCORE
## ----------------------------
## See if the Fortran 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
## compiler. Autoconf has macros FC_FUNC(name, NAME)
## and FC_FUNC_(name, NAME) for this. However, the F77_* macros in
## the R API have one argument only and therefore cannot deal with
## Fortran 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 in F77_*
## (but do in R_dlsym).
AC_DEFUN([R_PROG_FC_APPEND_UNDERSCORE],
[AC_REQUIRE([AC_FC_WRAPPERS])
dnl DANGER! We really need the results of _AC_FC_NAME_MANGLING as
dnl stored in the cache var ac_cv_fc_mangling which is not documented
dnl and hence may change ...
case "${ac_cv_fc_mangling}" in
"upper "*)
AC_MSG_WARN([Fortran compiler uses uppercase external names])
AC_MSG_ERROR([cannot use Fortran])
;;
esac
AC_MSG_CHECKING([whether ${FC} appends underscores to external names])
AC_CACHE_VAL([r_cv_prog_fc_append_underscore],
[case "${ac_cv_fc_mangling}" in
*", underscore, "*)
r_cv_prog_fc_append_underscore=yes
;;
*", no underscore, "*)
r_cv_prog_fc_append_underscore=no
;;
esac])
if test -n "${r_cv_prog_fc_append_underscore}"; then
AC_MSG_RESULT([${r_cv_prog_fc_append_underscore}])
else
AC_MSG_RESULT([unknown])
AC_MSG_ERROR([cannot use Fortran])
fi
if test "${r_cv_prog_fc_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 ${FC} appends extra underscores to external names])
AC_CACHE_VAL([r_cv_prog_fc_append_second_underscore],
[case "${ac_cv_fc_mangling}" in
*", extra underscore")
r_cv_prog_fc_append_second_underscore=yes
;;
*", no extra underscore")
r_cv_prog_fc_append_second_underscore=no
;;
esac])
if test -n "${r_cv_prog_fc_append_second_underscore}"; then
AC_MSG_RESULT([${r_cv_prog_fc_append_second_underscore}])
else
AC_MSG_RESULT([unknown])
AC_MSG_ERROR([cannot use Fortran])
fi
if test "${r_cv_prog_fc_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_FC_APPEND_UNDERSCORE
## R_PROG_FC_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_FC_CAN_RUN],
[AC_REQUIRE([AC_CHECK_LIBM])
AC_MSG_CHECKING([whether mixed C/Fortran code can be run])
AC_CACHE_VAL([r_cv_prog_fc_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
${FC} ${FFLAGS} -c conftestf.f 1>&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD
dnl 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} ${CPPFLAGS} ${CPPFLAGS} ${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 HP-UX with native cc we have to
## use ld for SHLIB_LD) ...
## Be nice to people who put compiler architecture opts in CFLAGS
if ${CC} ${CPPFLAGS} ${CFLAGS} ${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 ${?} = 0; then
r_cv_prog_fc_can_run=yes
fi
fi
fi
])
rm -Rf conftest conftest.* conftestf.* core
if test -n "${r_cv_prog_fc_can_run}"; then
AC_MSG_RESULT([yes])
else
if test "${cross_compiling}" = yes; then
AC_MSG_RESULT([don't know (cross-compiling)])
else
AC_MSG_WARN([cannot run mixed C/Fortran code])
AC_MSG_ERROR([Maybe check LDFLAGS for paths to Fortran libraries?])
fi
fi
])# R_PROG_FC_CAN_RUN
## R_PROG_FC_CC_COMPAT
## --------------------
## Check whether the Fortran and C compilers agree on int and double.
AC_DEFUN([R_PROG_FC_CC_COMPAT],
[AC_REQUIRE([AC_CHECK_LIBM])
AC_MSG_CHECKING([whether ${FC} and ${CC} agree on int and double])
AC_CACHE_VAL([r_cv_prog_fc_cc_compat],
[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
${FC} ${FFLAGS} -c conftestf.f 1>&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD
dnl Yes we need to double quote this ...
[cat > conftest.c <<EOF
#include <math.h>
#include <stdlib.h>
#include <stdio.h>
#include "confdefs.h"
#ifdef HAVE_F77_UNDERSCORE
# define F77_SYMBOL(x) x ## _
#else
# define F77_SYMBOL(x) x
#endif
extern void F77_SYMBOL(cftest)(int *a, int *b, double *x, double *y);
int main () {
int a[3] = {17, 237, 2000000000}, b[2], res = 0;
double x[3] = {3.14159265, 123.456789, 2.3e34}, z[3];
double eps = 1e-6;
double zres[3];
int i, bres[2];
zres[0] = (double) a[2]/x[1];
zres[1] = x[2]*x[0];
zres[2] = pow(x[1]/x[0], 17.0);
bres[0] = a[2]/a[1];
bres[1] = a[2] - a[0]*a[1];
F77_SYMBOL(cftest)(a, b, x, z);
if(b[0] != bres[0]) res++;
if(b[1] != bres[1]) res++;
for(i = 0; i < 3; i++)
if(fabs(z[i]/zres[i] - 1) > eps) res++;
printf("number of errors %d\n", res);
exit(res);
}
EOF]
if ${CC} ${CPPFLAGS} ${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 HP-UX with native cc we have to
## use ld for SHLIB_LD) ...
if ${CC} ${CPPFLAGS} ${CFLAGS} ${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 ${?} = 0; then
r_cv_prog_fc_cc_compat=yes
fi
fi
fi
])
rm -Rf conftest conftest.* conftestf.* core
if test -n "${r_cv_prog_fc_cc_compat}"; then
AC_MSG_RESULT([yes])
else
if test "${cross_compiling}" = yes; then
AC_MSG_RESULT([don't know (cross-compiling)])
else
AC_MSG_WARN([${FC} and ${CC} disagree on int and double])
AC_MSG_ERROR([Maybe change CFLAGS or FFLAGS?])
fi
fi
])# R_PROG_FC_CC_COMPAT
## R_PROG_FC_CC_COMPAT_COMPLEX
## ----------------------------
## Check whether the Fortran and C compilers agree on double complex.
AC_DEFUN([R_PROG_FC_CC_COMPAT_COMPLEX],
[AC_REQUIRE([AC_CHECK_LIBM])
AC_MSG_CHECKING([whether ${FC} and ${CC} agree on double complex])
AC_CACHE_VAL([r_cv_prog_fc_cc_compat_complex],
[cat > conftestf.f <<EOF
subroutine cftest(x)
complex*16 x(3)
integer i
c a few tests of constructs that are sometimes missing
if(x(1) .eq. x(1)) i = 0
x(1) = x(1)*x(2) + x(3)
end
EOF
${FC} ${FFLAGS} -c conftestf.f 1>&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD
dnl Yes we need to double quote this ...
[cat > conftest.c <<EOF
#include <math.h>
#include <stdlib.h>
#include "confdefs.h"
#include <stdio.h>
#ifdef HAVE_F77_UNDERSCORE
# define F77_SYMBOL(x) x ## _
#else
# define F77_SYMBOL(x) x
#endif
typedef struct {
double r;
double i;
} Rcomplex;
extern void F77_SYMBOL(cftest)(Rcomplex *x);
int main () {
Rcomplex z[3];