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configure.ac
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### configure.ac -*- Autoconf -*-
###
### Process this file with autoconf to produce a configure script.
###
### Copyright (C) 1998-2025 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/
AC_PREREQ([2.72])
## We want to get the version number from file 'VERSION' (rather than
## specifying the version info in 'configure.ac'. Hence, we need a bit
## of M4 magic. Note that M4 esyscmd has a trailing newline because the
## shell command output has one, hence the patsubst() trick.
m4_define([R_VERSION],
m4_bpatsubst(m4_esyscmd([cat VERSION]),
[\([0-9.]*\)\(\w\|\W\)*],
[\1]))
AC_INIT([R],[R_VERSION],[https://bugs.r-project.org],[R],[https://www.r-project.org])
AC_CONFIG_SRCDIR([src/include/Defn.h])
AC_CONFIG_AUX_DIR([tools])
### * Information on the package.
dnl ## Automake initialization.
dnl Not needed, and possibly resulting in non-portable configure scripts
dnl with hard-wired Automake API numbers (aclocal-1.x) ...
dnl AM_INIT_AUTOMAKE(AC_PACKAGE_NAME, AC_PACKAGE_VERSION)
dnl Nevertheless, we need to provide PACKAGE and VERSION ...
PACKAGE=[${PACKAGE_NAME}]
AC_DEFINE_UNQUOTED(PACKAGE, "${PACKAGE}", [Name of package])
AC_SUBST(PACKAGE)
VERSION=[${PACKAGE_VERSION}]
AC_DEFINE_UNQUOTED(VERSION, "${VERSION}", [Version number of package])
AC_SUBST(VERSION)
MAJ_MIN_VERSION=`echo ${VERSION} | sed 's/\.[[0-9]]$//'`
AC_SUBST(MAJ_MIN_VERSION)
## Autoheader initialization.
AH_TOP([#ifndef R_CONFIG_H
#define R_CONFIG_H])
AH_BOTTOM([
#endif /* not R_CONFIG_H */])
## We call AC_GNU_SOURCE early (it is a prerequisite for the gettext
## macros), so all the C compiling makes use of that. Nowadays it calls
## AC_USE_SYSTEM_EXTENSIONS ....
## This sets _GNU_SOURCE, so glibc defines all its extensions
## (_POSIX_C_SOURCE, _XOPEN_SOURCE, _BSD_SOURCE, __USE_MISC) and these
## unlock declarations of non-C99 functions and constants.
## Ditto for __EXTENSIONS__ on Solaris and _ALL_SOURCE on AIX.
### ** Platform.
AC_CANONICAL_HOST
AC_DEFINE_UNQUOTED(R_PLATFORM, "${host}",
[Define this to be the canonical name (cpu-vendor-os) of your system.])
AC_DEFINE_UNQUOTED(R_CPU, "${host_cpu}",
[Define this to be the name of the CPU of your system.])
AC_DEFINE_UNQUOTED(R_VENDOR, "${host_vendor}",
[Define this to be the name of the vendor of your system.])
AC_DEFINE_UNQUOTED(R_OS, "${host_os}",
[Define this to be the name of the OS of your system.])
## exclude some unsupported OSes
case "${host_os}" in
## Darwin 1.3.1 was macOS 10.0, 1.4.1 was 10.1, 5 is 10.2 etc
## with 19 being 10.15 (Catalina) and 20 being 11 (Big Sur)
## We no longer support < 10.6 (Snow Leopard, Darwin 10)
## https://en.wikipedia.org/wiki/Darwin_OS
darwin1.*)
AC_MSG_ERROR([The earliest supported macOS is 10.6.]
;;
darwin[[56789]]*)
AC_MSG_ERROR([The earliest supported macOS is 10.6.]
;;
aix[[123]]*|aix4.[[01]]*)
## These need a form of linking we no longer support
AC_MSG_ERROR([AIX prior to 4.2 is not supported])
;;
esac
R_PLATFORM="${host}"
AC_SUBST(R_PLATFORM)
dnl config.guess deliberately overrides the cpu/arch as repoorted by
dnl uname -m (or -p) to use one almost unknown to Mac users. So
dnl we need a macro for a more familiar name.
MAC_CPU=
case "${host_os}" in
darwin*)
case "${host_cpu}" in
aarch64)
MAC_CPU="arm64"
;;
*)
MAC_CPU="${host_cpu}"
;;
esac
AC_SUBST(MAC_CPU)
;;
esac
R_OS="${host_os}"
AC_SUBST(R_OS)
case "${host_os}" in
mingw*|windows*|winnt|msys)
AC_DEFINE(Win32, 1,
[Define according to your operating system type.])
R_OSTYPE="windows"
;;
*)
AC_DEFINE(Unix, 1,
[Define according to your operating system type.])
R_OSTYPE="unix"
;;
esac
AC_SUBST(R_OSTYPE)
R_CONFIG_ARGS="${ac_configure_args}"
AC_SUBST(R_CONFIG_ARGS)
## Shortcut for musl which refuses to identify itself at C level
if test "${host_os}" = "linux-musl"; then
AC_DEFINE(OS_MUSL, 1, [Define if running on Linux-musl])
fi
### ** Defaults.
## NB: autoconf loads such files too
cfile="${srcdir}/config.site"
if test -r "${cfile}"; then
echo "loading site script '${cfile}'"
. "${cfile}"
fi
cfile="${HOME}/.R/config"
if test -r "${cfile}"; then
echo "loading user script '${cfile}'"
. "${cfile}"
fi
cfile="./config.site"
if test -r "${cfile}"; then
echo "loading build-specific script '${cfile}'"
. "${cfile}"
fi
## We need to establish suitable defaults for a 64-bit OS
libnn=lib
case "${host_os}" in
linux*)
## Not all distros use this: some choose to march out of step
## Allow for ppc64le (Debian calls ppc64el), powerpc64le ...
case "${host_cpu}" in
x86_64|mips64|ppc64*|powerpc64*|sparc64|s390x)
## Debian/Ubuntu has "lib64", but the primary location is "lib"
if test -d /usr/lib64 && test ! -f /etc/debian_version; then
libnn=lib64
fi
;;
esac
;;
solaris*)
## libnn=lib/sparcv9 ## on 64-bit only, but that's compiler-specific
;;
esac
: ${LIBnn=$libnn}
## We provide these defaults so that headers and libraries in
## '/usr/local' are found (by the native tools, mostly).
if test -f "/sw/etc/fink.conf"; then
: ${CPPFLAGS="-I/sw/include -I/usr/local/include"}
: ${LDFLAGS="-L/sw/lib -L/usr/local/lib"}
else
: ${CPPFLAGS="-I/usr/local/include"}
: ${LDFLAGS="-L/usr/local/${LIBnn}"}
fi
AC_SUBST(LIBnn)
## take care not to override the command-line setting
if test "${libdir}" = '${exec_prefix}/lib'; then
libdir='${exec_prefix}/${LIBnn}'
fi
## R installation directories
m4_divert_once([HELP_BEGIN], [
R installation directories:
--libdir=DIR R files to R_HOME=DIR/R @<:@EPREFIX/$LIBnn@:>@
rdocdir=DIR R doc files to DIR @<:@R_HOME/doc@:>@
rincludedir=DIR R include files to DIR @<:@R_HOME/include@:>@
rsharedir=DIR R share files to DIR @<:@R_HOME/share@:>@])dnl
if test -z "${rdocdir}"; then
rdocdir='${rhome}/doc'
fi
AC_SUBST([rdocdir])
if test -z "${rincludedir}"; then
rincludedir='${rhome}/include'
fi
AC_SUBST([rincludedir])
if test -z "${rsharedir}"; then
rsharedir='${rhome}/share'
fi
AC_SUBST([rsharedir])
### ** Handle arguments to configure.
config_opts="${ac_configure_args}"
AC_SUBST(config_opts)
### ** Optional features.
## Allow the user to specify support for R profiling.
AC_ARG_ENABLE([R-profiling],
[AS_HELP_STRING([--enable-R-profiling],[attempt to compile support for Rprof() @<:@yes@:>@])],
[if test "${enableval}" = no; then
want_R_profiling=no
elif test "${enableval}" = yes; then
want_R_profiling=yes
else
want_R_profiling=yes
fi],
[want_R_profiling=yes])
## Allow the user to specify support for memory profiling.
AC_ARG_ENABLE([memory-profiling],
[AS_HELP_STRING([--enable-memory-profiling],[attempt to compile support for Rprofmem(), tracemem() @<:@no@:>@])],
[if test "${enableval}" = no; then
want_memory_profiling=no
elif test "${enableval}" = yes; then
want_memory_profiling=yes
else
want_memory_profiling=no
fi],
[want_memory_profiling=no])
## Allow the user to specify building an R framework (Darwin).
AC_ARG_ENABLE([R-framework],
[AS_HELP_STRING([--enable-R-framework@<:@=DIR@:>@],[macOS only: build R framework (if possible), and specify
its installation prefix @<:@no, /Library/Frameworks@:>@])],
[want_R_framework="${enableval}"],
[want_R_framework=no])
## Can only build frameworks on Darwin.
if test "${want_R_framework}" != no; then
case "${host_os}" in
darwin*)
if test "${want_R_framework}" = yes; then
## If we build a framework and 'prefix' was not given, we need
## to set it to '/Library/Frameworks' rather than '/usr/local'.
## Note that Autoconf sets things up so that by default, prefix
## and exec_prefix are set to 'NONE'. Let's hope for no change.
if test "x${prefix}" = xNONE; then
prefix="/Library/Frameworks"
fi
else
prefix="${want_R_framework}"
want_R_framework=yes
fi
## FW_VERSION is the sub-directory name used in R.framework/Version
## By default it's the a.b form of the full a.b.c version to simplify
## binary updates.
: ${FW_VERSION=`echo "${PACKAGE_VERSION}" | sed -e "s/[[\.]][[0-9]]$//"`}
;;
*)
want_R_framework=no
;;
esac
fi
AM_CONDITIONAL(WANT_R_FRAMEWORK, [test "x${want_R_framework}" = xyes])
## Allow the user to specify building R as a shared library.
## (but a 'dynamic library' in the terminology of macOS).
## <NOTE>
## Building a framework implies building R shared libraries, hence the
## strange default.
## We might want to warn about the case where '--disable-R-shlib' was
## given explicitly ...
## </NOTE>
AC_ARG_ENABLE([R-shlib],
[AS_HELP_STRING([--enable-R-shlib],[build the shared/dynamic library 'libR' @<:@no@:>@])],
[want_R_shlib="${enableval}"],
[want_R_shlib="${want_R_framework}"])
AM_CONDITIONAL(WANT_R_SHLIB, [test "x${want_R_shlib}" = xyes])
AC_ARG_ENABLE([R-static-lib],
[AS_HELP_STRING([--enable-R-static-lib],[build the static library 'libR.a' @<:@no@:>@])],
[want_R_static="${enableval}"],
[want_R_static="no"])
if test "x${want_R_static}" = xyes; then
if test "x${want_R_shlib}" = xyes; then
AC_MSG_WARN([--enable-R-static-lib conflicts with --enable-R-shlib and will be ignored])
want_R_static=no
fi
fi
AM_CONDITIONAL(WANT_R_STATIC, [test "x${want_R_static}" = xyes])
AC_ARG_WITH([C23],
[AS_HELP_STRING([--with-C23],[use C23 if available @<:@no@:>@])],
[R_ARG_USE(C23)],
[use_C23=no])
## Build separate shared/dynamic library containing R's BLAS if desired
AC_ARG_ENABLE([BLAS-shlib],
[AS_HELP_STRING([--enable-BLAS-shlib],[build BLAS into a shared/dynamic library @<:@perhaps@:>@])],
[use_blas_shlib="${enableval}"],
[use_blas_shlib="unset"])
## As from R 3.2.0 split up -L... and -lR
if test "${want_R_shlib}" = yes; then
LIBR0="-L\"\$(R_HOME)/lib\$(R_ARCH)\""
LIBR1=-lR
else
LIBR0=
LIBR1=
fi
## Enable maintainer-specific portions of Makefiles.
AC_ARG_ENABLE([maintainer-mode],
[AS_HELP_STRING([--enable-maintainer-mode],[enable make rules and dependencies not useful (and
maybe confusing) to the casual installer @<:@no@:>@])],
[use_maintainer_mode="${enableval}"],
[use_maintainer_mode=no])
AM_CONDITIONAL(MAINTAINER_MODE, [test "x${use_maintainer_mode}" = xyes])
## Enable testing the write barrier.
AC_ARG_ENABLE([strict-barrier],
[AS_HELP_STRING([--enable-strict-barrier],[provoke compile error on write barrier violation
@<:@no@:>@])],
[use_strict_barrier="${enableval}"],
[use_strict_barrier=no])
if test x"${use_strict_barrier}" = xyes; then
AC_DEFINE(TESTING_WRITE_BARRIER, 1,
[Define to enable provoking compile errors on write barrier
violation.])
fi
AC_ARG_ENABLE([prebuilt-html],
[AS_HELP_STRING([--enable-prebuilt-html],[build static HTML help pages @<:@no@:>@])],
[want_prebuilt_html="${enableval}"],
[want_prebuilt_html=no])
AM_CONDITIONAL(BUILD_HTML, [test "x${want_prebuilt_html}" = xyes])
AC_ARG_ENABLE([lto],
[AS_HELP_STRING([--enable-lto],[enable link-time optimization @<:@no@:>@])],
[want_lto="${enableval}"], [want_lto=no])
ltoall=no
dnl Allow to be set to empty, although what would be the point?
if test "${LTO+set}" = set; then
uLTO="${LTO}"
else
uLTO=-flto
fi
dnl Might well want to set to empty
if test "${LTO_FC+set}" = set; then
uLTO_FC="${LTO_FC}"
else
uLTO_FC="${uLTO}"
fi
if test "x${want_lto}" = xyes; then
ltoall=yes
LTO="${uLTO}"
LTOALL="${uLTO}"
LTO_FC="${uLTO_FC}"
LTOALL_FC="${uLTO_FC}"
elif test "x${want_lto}" = xR; then
LTO="${uLTO}"
LTO_FC="${uLTO_FC}"
elif test "x${want_lto}" = xcheck; then
AC_MSG_WARN([--enable-lto=check has been withdrawn and will be ignored])
want_lto=no
elif test "x${want_lto}" != xno; then
AC_MSG_WARN([Unknown value --enable-lto=${enableval}])
want_lto=no
fi
if test "x${want_lto}" = xno; then
dnl unset as inadvertent settings will at best slow down R build.
LTO=
LTOALL=
LTO_FC=
LTOALL_FC=
LTO_LD=
fi
AC_SUBST(LTO)
AC_SUBST(LTOALL)
AC_SUBST(LTO_FC)
AC_SUBST(LTOALL_FC)
AC_SUBST(LTO_LD)
## used in src/main/Makefile
AM_CONDITIONAL(BUILD_LTO, [test "x${want_lto}" != xno])
AM_CONDITIONAL(BUILD_LTO_ALL, [test "x${ltoall}" = xyes])
## needed for some versions of icx, but we do not know which
AC_SUBST(INTEL_ICX_FIX)
AC_ARG_ENABLE([java],
[AS_HELP_STRING([--enable-java],[enable Java @<:@yes@:>@])],
[want_java="${enableval}"],
[want_java=yes])
AM_CONDITIONAL(WANT_JAVA, [test "x${want_java}" = xyes])
### ** Optional packages.
## BLAS.
AC_ARG_WITH([blas],
[AS_HELP_STRING([--with-blas],[use system BLAS library (if available), or specify it @<:@unset@:>@])],
[R_ARG_USE(blas)],
[use_blas=unset])
## LAPACK.
AC_ARG_WITH([lapack],
[AS_HELP_STRING([--with-lapack],[use system LAPACK library (if available), or specify it @<:@unset@:>@])],
[R_ARG_USE(lapack)],
[use_lapack=unset])
## Readline.
AC_ARG_WITH([readline],
[AS_HELP_STRING([--with-readline],[use readline library @<:@yes@:>@])],
[R_ARG_USE(readline)],
[use_readline=yes])
## PCRE2.
AC_ARG_WITH([pcre2],
[AS_HELP_STRING([--with-pcre2],[use PCRE2 library (if available) @<:@yes@:>@])],
[R_ARG_USE(pcre2)],
[use_pcre2=yes])
## PCRE1.
AC_ARG_WITH([pcre1],
[AS_HELP_STRING([--with-pcre1],[use PCRE1 library (if available and PCRE2 is not) @<:@yes@:>@])],
[R_ARG_USE(pcre1)],
[use_pcre1=no])
## Aqua.
AC_ARG_WITH([aqua],
[AS_HELP_STRING([--with-aqua],[macOS only: use Aqua (if available) @<:@yes@:>@])],
[if test "${withval}" = no; then
want_aqua=no
else
want_aqua=yes
fi],
[want_aqua=yes])
## Tcl/Tk.
AC_ARG_WITH([tcltk],
[AS_HELP_STRING([--with-tcltk],[use Tcl/Tk (if available), or specify its library dir @<:@yes@:>@])],
[if test "${withval}" = no; then
want_tcltk=no
elif test "${withval}" = yes; then
want_tcltk=yes
else
want_tcltk=yes
LDFLAGS="${LDFLAGS} -L${withval}"
tcltk_prefix="${withval}"
fi],
[want_tcltk=yes])
AC_ARG_WITH([tcl-config],
[AS_HELP_STRING([--with-tcl-config=TCL_CONFIG],[specify location of tclConfig.sh @<:@@:>@])],
[TCL_CONFIG="${withval}"],
[TCL_CONFIG=""])
AC_ARG_WITH([tk-config],
[AS_HELP_STRING([--with-tk-config=TK_CONFIG],[specify location of tkConfig.sh @<:@@:>@])],
[TK_CONFIG="${withval}"],
[TK_CONFIG=""])
## cairographics etc
AC_ARG_WITH([cairo],
[AS_HELP_STRING([--with-cairo],[use cairo (and pango) if available @<:@yes@:>@])],
[if test "${withval}" = no; then
want_cairo=no
else
want_cairo=yes
fi], [want_cairo=yes])
## other libraries
AC_ARG_WITH([libpng],
[AS_HELP_STRING([--with-libpng],[use libpng library (if available) @<:@yes@:>@])],
[R_ARG_USE(libpng)],
[use_libpng=yes])
AC_ARG_WITH([jpeglib],
[AS_HELP_STRING([--with-jpeglib],[use jpeglib library (if available) @<:@yes@:>@])],
[R_ARG_USE(jpeglib)],
[use_jpeglib=yes])
AC_ARG_WITH([libtiff],
[AS_HELP_STRING([--with-libtiff],[use libtiff library (if available) @<:@yes@:>@])],
[R_ARG_USE(libtiff)],
[use_libtiff=yes])
AC_ARG_WITH([system-tre],
[AS_HELP_STRING([--with-system-tre],[use system tre library (if available) @<:@no@:>@])],
[R_ARG_USE_SYSTEM(tre)],
[use_system_tre=no])
## Valgrind instrumentation
AC_ARG_WITH([valgrind-instrumentation],
[AS_HELP_STRING([--with-valgrind-instrumentation],[Level of additional instrumentation for Valgrind (0/1/2) @<:@0@:>@])],
[valgrind_level=${withval}],
[valgrind_level=0])
AC_ARG_WITH([system-valgrind-headers],
[AS_HELP_STRING([--with-system-valgrind-headers],[defunct])],
[AC_MSG_WARN([--with-system-valgrind-headers is defunct])])
AC_ARG_WITH([internal-tzcode],
[AS_HELP_STRING([--with-internal-tzcode],[use internal time-zone code @<:@no, yes on macOS@:>@])],
[use_internal_tzcode=${withval}],
[use_internal_tzcode=default])
AC_ARG_WITH([internal-towlower],
[AS_HELP_STRING([--with-internal-towlower],[use internal code for towlower/upper @<:@no, yes on macOS@:>@])],
[use_internal_towlower=${withval}],
[use_internal_towlower=default])
AC_ARG_WITH([internal-iswxxxxx],
[AS_HELP_STRING([--with-internal-iswxxxxx],[use internal iswprint etc. @<:@no, yes on macOS@:>@])],
[use_internal_iswxxxxx=${withval}],
[use_internal_iswxxxxx=default])
AC_ARG_WITH([internal-wcwidth],
[AS_HELP_STRING([--with-internal-wcwidth],[use internal wcwidth @<:@yes@:>@])],
[use_internal_wcwidth=${withval}],
[use_internal_wcwidth=yes])
AC_ARG_WITH([internal-tzcode],
[AS_HELP_STRING([--with-internal-tzcode],[use internal time-zone code @<:@no, yes on macOS@:>@])],
[use_internal_tzcode=${withval}],
[use_internal_tzcode=default])
## <FIXME>
## Completely disable using libtool for building shlibs until libtool
## fully supports Fortran and C++.
## AC_ARG_WITH([libtool],
## [AS_HELP_STRING([--with-libtool],[use libtool for building shared libraries @<:@yes@:>@])],
## [use_libtool="${withval}"],
## [use_libtool=yes])
## AM_CONDITIONAL(USE_LIBTOOL, [test "x${use_libtool}" = xyes])
## </FIXME>
## Recommended R packages.
AC_ARG_WITH([recommended-packages],
[AS_HELP_STRING([--with-recommended-packages],[use/install recommended R packages @<:@yes@:>@])],
[R_ARG_USE(recommended_packages)],
[use_recommended_packages=yes])
## ICU
AC_ARG_WITH([ICU],
[AS_HELP_STRING([--with-ICU],[use ICU library (if available) @<:@yes@:>@])],
[R_ARG_USE(ICU)],
[use_ICU=yes])
## Byte-compilation of packages.
AC_ARG_ENABLE([byte-compiled-packages],
[AS_HELP_STRING([--enable-byte-compiled-packages],
[byte-compile base and recommended packages @<:@yes@:>@])],
[want_byte_compiled_packages="${enableval}"],
[want_byte_compiled_packages=yes])
AM_CONDITIONAL(BYTE_COMPILE_PACKAGES,
[test "x${want_byte_compiled_packages}" = xyes])
AC_ARG_WITH([static-cairo],
[AS_HELP_STRING([--with-static-cairo],[allow for the use of static cairo libraries @<:@no, yes on macOS@:>@])],
[use_static_cairo=${withval}],
[use_static_cairo=default])
if test "x$use_static_cairo" = xdefault; then
case "${host_os}" in
darwin*)
use_static_cairo=yes
;;
*)
use_static_cairo=no
;;
esac
fi
### ** Precious variables.
AC_ARG_VAR([R_PRINTCMD],
[command used to spool PostScript files to the printer])
AC_ARG_VAR([R_PAPERSIZE],
[paper size for the local (PostScript) printer])
AC_ARG_VAR([R_BATCHSAVE],
[set default behavior of R when ending a session])
AC_ARG_VAR([MAIN_CFLAGS],
[additional CFLAGS used when compiling the main binary])
AC_ARG_VAR([SHLIB_CFLAGS],
[additional CFLAGS used when building shared objects])
AC_ARG_VAR([MAIN_FFLAGS],
[additional FFLAGS used when compiling the main binary])
AC_ARG_VAR([SHLIB_FFLAGS],
[additional FFLAGS used when building shared objects])
AC_ARG_VAR([MAIN_LD],
[command used to link the main binary])
AC_ARG_VAR([MAIN_LDFLAGS],
[flags which are necessary for loading a main program which
will load shared objects (DLLs) at runtime])
AC_ARG_VAR([CPICFLAGS],
[special flags for compiling C code to be turned into a
shared object.])
AC_ARG_VAR([FPICFLAGS],
[special flags for compiling Fortran code to be
turned into a shared object.])
AC_ARG_VAR([SHLIB_LD],
[command for linking shared objects which contain object
files from a C or Fortran compiler only])
AC_ARG_VAR([SHLIB_LDFLAGS],
[special flags used by SHLIB_LD])
AC_ARG_VAR([DYLIB_LD],
[command for linking dynamic libraries which contain object
files from a C or Fortran compiler only])
AC_ARG_VAR([DYLIB_LDFLAGS],
[special flags used for make a dynamic library])
AC_ARG_VAR([CXXPICFLAGS],
[special flags for compiling C++ code to be turned into a
shared object])
AC_ARG_VAR([SHLIB_CXXLD],
[command for linking shared objects which contain object
files from the C++ compiler])
AC_ARG_VAR([SHLIB_CXXLDFLAGS],
[special flags used by SHLIB_CXXLD])
AC_ARG_VAR([TCLTK_LIBS],
[flags needed for linking against the Tcl and Tk libraries])
AC_ARG_VAR([TCLTK_CPPFLAGS],
[flags needed for finding the tcl.h and tk.h headers])
AC_ARG_VAR([MAKE], [make command])
AC_ARG_VAR([TAR], [tar command])
AC_ARG_VAR([R_BROWSER], [default browser])
AC_ARG_VAR([R_PDFVIEWER], [default PDF viewer])
AC_ARG_VAR([BLAS_LIBS],
[flags needed for linking against external BLAS libraries])
AC_ARG_VAR([LAPACK_LIBS],
[flags needed for linking against external LAPACK libraries])
AC_ARG_VAR([LIBnn], ['lib' or 'lib64' for dynamic libraries])
AC_ARG_VAR([SAFE_FFLAGS],
[Safe Fortran fixed-form compiler flags for e.g. dlamc.f])
AC_ARG_VAR([r_arch],
[Use architecture-dependent subdirs with this name])
AC_ARG_VAR([DEFS], [C defines for use when compiling R])
AC_ARG_VAR([JAVA_HOME],
[Path to the root of the Java environment])
AC_ARG_VAR([R_SHELL],
[shell to be used for shell scripts, including 'R'])
if test -z "${r_arch}"; then
R_ARCH=
R_INCLUDES="-I\"\$(R_INCLUDE_DIR)\""
else
R_ARCH="/${r_arch}"
R_INCLUDES="-I\"\$(R_INCLUDE_DIR)\" -I\"\$(R_INCLUDE_DIR)/${r_arch}\""
fi
AC_DEFINE_UNQUOTED(R_ARCH, "${r_arch}",
[Define this to use architecture-dependent subdirectories of this name.])
AC_SUBST([R_ARCH])
AC_SUBST([R_INCLUDES])
### ** Check whether we build in srcdir.
AC_PATH_PROG(GETWD, pwd, pwd)
AC_MSG_CHECKING([whether builddir is srcdir])
if test "`cd \"${srcdir}\" && ${GETWD}`" = "`${GETWD}`"; then
BUILDDIR_IS_SRCDIR=yes
else
BUILDDIR_IS_SRCDIR=no
fi
AC_SUBST(BUILDDIR_IS_SRCDIR)
AC_MSG_RESULT([${BUILDDIR_IS_SRCDIR}])
### * Checks for programs.
AC_PROG_LN_S
R_PROG_AR
R_PROG_INSTALL
## we would like a POSIX sed, and need one on Solaris
AC_PATH_PROGS(SED, sed, /bin/sed, [/usr/xpg4/bin:$PATH])
## 'which' is not POSIX, and might be a shell builtin or alias
## (but should not be in 'sh')
AC_PATH_PROGS(WHICH, which, which)
if test "${WHICH}" = which ; then
## needed to build and run R
## ends up hard-coded in the utils package
AC_MSG_ERROR([[which is required but missing]])
fi
## Make
: ${MAKE=make}
AC_SUBST(MAKE)
## Pager
R_PROG_PAGER
## Tar -- we prefer a GNU version
AC_PATH_PROGS(TAR, [${TAR} gtar gnutar tar], "")
## TeXMF stuff
R_PROG_TEXMF
## Unzip & zip & gzip & bip2
AC_PATH_PROGS(R_UNZIPCMD, [${UNZIP} unzip], "")
AC_PATH_PROGS(R_ZIPCMD, [${ZIP} zip], "")
AC_PATH_PROGS(R_GZIPCMD, [${GZIP} gzip], true)
AC_PATH_PROGS(R_BZIPCMD, [${BZIP} bzip2], "")
## Browser
R_PROG_BROWSER
## PDF viewer
R_PROG_PDFVIEWER
## Noweb (notangle), aclocal, autoconf, autoheader - maintainer mode only
R_MISSING_PROG(ACLOCAL, aclocal,
R_MNT_WARN([[aclocal is missing - aclocal.m4 cannot be updated!]])
)
R_MISSING_PROG(AUTOCONF, autoconf,
R_MNT_WARN([[autoconf is missing - configure cannot be updated!]])
)
R_MISSING_PROG(AUTOHEADER, autoheader,
R_MNT_WARN([[autoheader is missing - header file templates like config.h.in cannot be updated!]])
)
AC_PROG_YACC
if test "${YACC}" = yacc ; then
## yacc is the default value even when yacc is not found
AC_CHECK_PROG(JUSTYACC, yacc, yes)
if test "x${JUSTYACC}" != xyes ; then
R_MNT_WARN([[yacc is missing - parsers cannot be updated!]])
fi
fi
AC_PATH_PROG(NOTANGLE, notangle, false)
if test "${NOTANGLE}" = false ; then
R_MNT_WARN([[notangle is missing - byte-code compiler source cannot be updated!]])
NOTANGLE=notangle
fi
## javareconf needs this
AC_PATH_PROG(REALPATH, realpath, false)
## Search for cairographics needs pkg-config,
## helps find jpeg, libpng and libtiff.
AC_PATH_PROGS(PKG_CONFIG, [ pkg-config pkgconf ], [])
AC_ARG_VAR([PKG_CONFIG], [path to pkg-config (or pkgconf) utility])
AC_ARG_VAR([PKG_CONFIG_PATH], [directories to add to pkg-config's search path])
AC_ARG_VAR([PKG_CONFIG_LIBDIR], [path overriding pkg-config's default search path])
AC_PROG_CC
dnl AC_PROG_GCC_TRADITIONAL
AC_USE_SYSTEM_EXTENSIONS ## see note above
dnl echo "---- initial CC = ${CC}"
CC_save=${CC}
CFLAGS_save=${CFLAGS}
CC_SUB=`echo "${CC}" | sed 's/-std=[[^ ]]*//'`
CFLAGS_SUB=`echo "${CFLAGS}" | sed -e 's/-std=[[^ ]]*//'`
dnl this is a hack until -std=gnu23 is widely accepted.
: ${CC23="${CC_SUB} -std=gnu23"}
: ${C23FLAGS="${CFLAGS_SUB}"}
CC=${CC23}
CFLAGS=${C23FLAGS}
unset r_cv_C23
R_C23
if test x${r_cv_C23} = xno; then
unset r_cv_C23
CC23="${CC_SUB} -std=gnu2x"
CC=${CC23}
R_C23
fi
if test x${r_cv_C23} = xno; then
CC23=
C23FLAGS=
fi
AC_SUBST(CC23)
AC_SUBST(C23FLAGS)
if test x$use_C23 = xyes; then
if test x${r_cv_C23} = xyes; then
CC=${CC23}
CFLAGS=${C23FLAGS}
else
CC=${CC_save}
CFLAGS=${CFLAGS_save}
AC_MSG_WARN([C23 support is unavailable])
fi
else
CC=${CC_save}
CFLAGS=${CFLAGS_save}
fi
dnl echo "---- final CC = ${CC}"
AC_PROG_CPP
R_PROG_CPP_CPPFLAGS
## As from R 3.6.0, use the modern Fortran compiler for .f files
echo "looking for a modern Fortran compiler"
## if user set FFLAGS but not FCFLAGS, default to former
if test "${FFLAGS+set}" = set -a "${FCFLAGS+set}" != set; then
FCFLAGS=${FFLAGS}
fi
AC_PROG_FC
if test -z "${FC}"; then
AC_MSG_ERROR([No Fortran compiler found])
fi
F77=${FC}
## see if the user set FFLAGS, otherwise use what AC_PROG_FC chose
if test "${FFLAGS+set}" != set; then
FFLAGS=${FCFLAGS}
fi
## This looks for a C++11 compiler: Apple clang++ is not by default
AC_PROG_CXX
## check this actually compiles
R_PROG_CXX
## AC_PROG_CXXCPP looks for limits.h and does not include CPPFLAGS
## CXXCPP is used in other places (not in R), so leave alone CXXCPP itself
AC_PROG_CXXCPP
if test "${CXXCPP}" = "${CXX} -E"; then
CXXCPP0="\$(CXX) -E"
else
CXXCPP0=${CXXCPP}
fi
AC_SUBST(CXXCPP0)
R_GCC4_VISIBILITY
AC_PROG_OBJC
## unfortunately autoconf sets OBJC to gcc even if there is no working compiler
if test "${OBJC}" = gcc; then
AC_LANG_PUSH([Objective C])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM(,[id foo;])],,[OBJC=''])
AC_LANG_POP([Objective C])
fi
## deferred until C++ standard is chosen.
dnl R_PROG_OBJCXX
## This has to be R_DEFS as autoconf overrrides DEFS
R_DEFS=${DEFS}
AC_SUBST(R_DEFS)
## Other C standards -- C23 done higher up
CC_save=${CC}
CFLAGS_save=${CFLAGS}
: ${CC17="${CC_SUB} -std=gnu17"}
: ${C17FLAGS="${CFLAGS_SUB}"}
CC=${CC17}
CFLAGS=${C17FLAGS}
R_C17
if test x${r_cv_C17} = xno; then
unset r_cv_C17
CC17="${CC_SUB} -std=gnu11"
CC=${CC17}
R_C17
fi
if test x${r_cv_C17} = xno; then
CC17=
C17FLAGS=
fi
AC_SUBST(CC17)
AC_SUBST(C17FLAGS)
: ${CC90="${CC_SUB} -std=gnu90"}
: ${C90FLAGS="${CFLAGS_SUB}"}
CC=${CC90}
CFLAGS=${C90FLAGS}
R_C90
if test x${r_cv_C90} = xno; then
CC90=
C90FLAGS=
fi
AC_SUBST(CC90)
AC_SUBST(C90FLAGS)
: ${CC99="${CC_SUB} -std=gnu99"}
: ${C99FLAGS="${CFLAGS_SUB}"}
CC=${CC99}
CFLAGS=${C99FLAGS}
R_C99
if test x${r_cv_C99} = xno; then
CC99=
C99FLAGS=
fi
AC_SUBST(CC99)
AC_SUBST(C99FLAGS)
CC=${CC_save}
CFLAGS=${CFLAGS_save}
## Libtool.
## (Run this after selecting the Fortan compiler as AC_PROG_LIBTOOL
## checks for a Fortran 77 compiler and sets F77 accordingly.)
AC_DISABLE_STATIC
LT_INIT
AC_SUBST(LIBTOOL_DEPS)
### * Checks for libraries.
## Set up LD_LIBRARY_PATH or equivalent.
## <FIXME>
## What is this doing *HERE*?
## Should be needed for tests using AC_RUN_IFELSE()?
## Make sure that non-standard directories specified via '-L' are really
## searched in the tests.
## OTOH, R_LD_LIBRARY_PATH in the environment is meant to be the final version.
R_LD_LIBRARY_PATH_save=${R_LD_LIBRARY_PATH}
R_LD_LIBRARY_PATH=
case "${host_os}" in
darwin*)
## Darwin provides a full path in the ID of each library such
## that the linker can add library's path to the binary at link time.
## This allows the dyld to find libraries even without xx_LIBRARY_PATH.
## No paths should be added to R_LD_LIBRARY_PATH (which in turn
## changes DYLD_LIBRARY_PATH), because they override the system
## look-up sequence. Such automatic override has proven to break things
## like system frameworks (e.g. ImageIO or OpenGL framework).
## Not so bad in later versions of Darwin,
## where DYLD_FALLBACK_LIBRARY_PATH is used (see below).
;;
*)
for arg in ${LDFLAGS}; do
case "${arg}" in
-L*)
lib=`echo ${arg} | sed "s/^-L//"`
R_SH_VAR_ADD(R_LD_LIBRARY_PATH, [${lib}], [${PATH_SEPARATOR}])
;;
esac
done
;;
esac
## Record name of environment variable which tells the dynamic linker
## where to find shlibs (typically, 'LD_LIBRARY_PATH').
## Used in etc/ldpaths: As from R 3.0.0 override what libtool thinks on macOS
## http://hublog.hubmed.org/archives/001192.html suggests this was in 10.4
## However, as from 10.11 this variable is not passed down to shells.
case "${host_os}" in
darwin*)
Rshlibpath_var=DYLD_FALLBACK_LIBRARY_PATH
;;
cygwin*|mingw*|windows*|winnt|msys)
Rshlibpath_var=PATH
;;
*)
Rshlibpath_var=${shlibpath_var}
esac
AC_SUBST(shlibpath_var)
## Export LD_LIBRARY_PATH or equivalent.
if eval "test -z \"\${${Rshlibpath_var}}\""; then
eval "${Rshlibpath_var}=\"${R_LD_LIBRARY_PATH}\""
else
eval "${Rshlibpath_var}=\"${R_LD_LIBRARY_PATH}${PATH_SEPARATOR}\${${Rshlibpath_var}}\""
fi
eval "export ${Rshlibpath_var}"
AC_SUBST(Rshlibpath_var)
## record how to strip shared/dynamic libraries.
: ${STRIP_SHARED_LIB="${striplib}"}
## record how to strip static libraries.
: ${STRIP_STATIC_LIB="${old_striplib}"}
AC_SUBST(STRIP_SHARED_LIB)
AC_SUBST(STRIP_STATIC_LIB)
## <NOTE>
## This actually comes from libtool.m4.
LT_LIB_M
AC_SUBST(LIBM)
## </NOTE>
## LT_LIB_M computes LIBM but does not add to LIBS, hence we do
## the following as well.
## This gives: 'sin' is a builtin with type 'double (double)'
AC_CHECK_LIB(m, sin)
AC_CHECK_LIB(dl, dlopen)
## Readline.
if test "${use_readline}" = yes; then
dnl in libedit both headers exist as links to editline/readline.h
AC_CHECK_HEADERS(readline/history.h readline/readline.h)
r_save_LIBS="${LIBS}"
LIBS=
## don't use the cached value as we need to rebuild LIBS
unset ac_cv_lib_readline_rl_callback_read_char
AC_CHECK_LIB(readline, rl_callback_read_char)
use_readline="${ac_cv_lib_readline_rl_callback_read_char}"
if test "${use_readline}" = no; then
## only need ncurses if libreadline is not statically linked against it
unset ac_cv_lib_readline_rl_callback_read_char
## FIXME replace main, maybe by tputs
AC_CHECK_LIB(ncurses, main, [],
AC_CHECK_LIB(tinfo, main, [],
AC_CHECK_LIB(termcap, main, [],
AC_CHECK_LIB(termlib, main))))
AC_CHECK_LIB(readline, rl_callback_read_char)
use_readline="${ac_cv_lib_readline_rl_callback_read_char}"
if test "${use_readline}" = yes; then
use_readline="${ac_cv_header_readline_readline_h}"
fi
fi