configure

#! /usr/bin/env sh

# Check that this is not just ./configure. We need to run this
# from R CMD INSTALL, to have the R env vars set.

if [ -z "$R_HOME" ]; then
    echo >&2 R_HOME is not set, are you running R CMD INSTALL?
    exit 1
fi

# Find the R binary we need to use. This is a bit trickier on
# Windows, because it has two architectures. On windows R_ARCH_BIN
# is set, so this should work everywhere.
RBIN="${R_HOME}/bin${R_ARCH_BIN}/R"

# ------------------------------------------------------------------------
# Detect system
# ------------------------------------------------------------------------

unset POSIX
if [ "$R_OSTYPE" = "unix" ]; then
    UNAME=`uname`
else
    UNAME=Windows
fi

unset WINDOWS
if [ "$R_OSTYPE" = "windows" ]; then WINDOWS=true; fi

unset LINUX
if [ "$UNAME" = "Linux" ]; then LINUX=true; POSIX=true; fi

unset MACOS
if [ "$UNAME" = "Darwin" ]; then MACOS=true; POSIX=true; fi

unset FREEBSD
## if [ "UNAME" = "FreeBSD" ]; then FREEBSD=true; POSIX=true; fi

unset OPENBSD
## if [ "UNAME" = "OpenBSD" ]; then OPENBSD=true; POSIX=true; fi

unset NETBSD
## if [ "UNAME" = "NetBSD" ]; then NETBSD=true; POSIX=true; fi

unset BSD
if [ -n "$FREEBSD" ] || [ -n "$OPENBSD" ] || [ -n "$NETBSD" ]; then
    BSD=true
fi

unset SUNOS
## if [ "UNAME" = "SunOS" ]; then SUNOS=true; POSIX=true; fi

unset AIX
##  if [ "UNAME" = "AIX" ]; then AIX=true; POSIX=true; fi

# ------------------------------------------------------------------------
# Set source files, macros, libs, compile flags
# ------------------------------------------------------------------------

MACROS=""
OBJECTS="init.o api-common.o common.o extra.o dummy.o error-codes.o"

if [ -n "$POSIX" ]; then
    OBJECTS="${OBJECTS} posix.o api-posix.o";
    MACROS="${MACROS} PS__POSIX"
    PS__POSIX=1
fi

if [ -n "$BSD" ]; then
    MACROS="${MACROS} PS__BSD"
    PS__BSD=1
fi

MACROS="$MACROS PS__VERSION"
PS__VERSION=546

if [ -n "$WINDOWS" ]; then
    VER=`"$RBIN" --vanilla --slave -f inst/tools/winver.R`
    MAJOR=`echo $VER | cut -f1 -d.`
    MINOR=`echo $VER | cut -f2 -d.`
    WINVER=`"$RBIN" --vanilla --slave -e "cat(sprintf('0x0%s', $MAJOR*100 + $MINOR))"`
    MACROS="${MACROS} PS__WINDOWS _WIN32_WINNT _AVAIL_WINVER"
    MACROS="${MACROS} _CRT_SECURE_NO_WARNINGS PSAPI_VERSION"
    PS__WINDOWS=1
    _WIN32_WINNT=$WINVER
    _AVAIL_WINVER=$WINVER
    _CT_SECURE_NO_WARNINGS=""
    PSAPI_VERSION=1

    OBJECTS="${OBJECTS} windows.o api-windows.o api-windows-conn.o"
    OBJECTS="${OBJECTS} arch/windows/process_info.o"
    OBJECTS="${OBJECTS} arch/windows/process_handles.o"
    OBJECTS="${OBJECTS} arch/windows/wmi.o"

    LIBRARIES="psapi kernel32 advapi32 shell32 netapi32 iphlpapi wtsapi32"
    LIBRARIES="${LIBRARIES} ws2_32 PowrProf Pdh"

    TARGETS=interrupt

elif [ -n "$MACOS" ]; then
    MACROS="${MACROS} PS__MACOS"
    PS__MACOS=1
    OBJECTS="${OBJECTS} macos.o api-macos.o arch/macos/process_info.o"

elif [ -n "$FREEBSD" ]; then
    MACROS="${MACROS} PS__FREEBSD"
    PS__FREEBSD=1
    OBJECTS="${OBJECTS} bsd.o arch/freebsd/specific.o"
    OBJECTS="${OBJECTS} arch/freebsd/sys_socks.o"
    OBJECTS="${OBJECTS} arch/freebsd/proc_socks.o"
    LIBRARIES="devstat"

elif [ -n "$OPENBSD" ]; then
    MACROS="${MACROS} PS__OPENBSD"
    PS__OPENBSD=1
    OBJECTS="${OBJECTS} bsd.o arch/openbsd/specific.o"
    LIBRARIES="kvm"

elif [ -n "$NETBSD" ]; then
    MACROS="${MACROS} PS__NETBSD"
    PS__NETBSD=1
    OBJECTS="${OBJECTS} bsd.o arch/netbsd/specific.o"
    OBJECTS="${OBJECTS} arch/netbsd/sys_socks.o"
    OBJECTS="${OBJECTS} arch/netbsd/proc_socks.o"
    LIBRARIES="kvm"

elif [ -n "$LINUX" ]; then
    MACROS="${MACROS} PS__LINUX"
    PS__LINUX=1
    OBJECTS="${OBJECTS} linux.o  api-linux.o"

elif [ -n "$SUNOS" ]; then
    MACROS="${MACROS} PS__SUNOS"
    PS__SUNOS=1
    OBJECTS="${OBJECTS} sunos.o arch/solaris/v10/ifaddrs.o"
    OBJECTS="${OBJECTS} arch/solaris/environ.o"

elif [ -n "$AIX" ]; then
    MACROS="${MACROS} PS__AIX"
    PS__AIX=1
    OBJECTS="${OBJECTS} aix.o"
    OBJECTS="${OBJECTS} arch/aix/net_connections.o"
    OBJECTS="${OBJECTS} arch/aix/common.o"
    OBJECTS="${OBJECTS} arch/aix/ifaddrs.o"
fi

# ------------------------------------------------------------------------
# Create Makevars file
# ------------------------------------------------------------------------

"$RBIN" --vanilla --slave -f inst/tools/error-codes.R

# OBJECTS (= source files)
# LIBRARIES -> PKG_LIBS

LIBS=`for l in $LIBRARIES; do echo "-l${l}"; done | tr "\n", " "`

cat src/Makevars.in | \
    sed "s|@OBJECTS@|${OBJECTS}|" | \
    sed "s/@LIBS@/${LIBS}/" | \
    sed "s/@TARGETS@/${TARGETS}/" > src/Makevars

# MACROS will be set as preprocessor macros
echo "/* Macros created by configure */" > src/config.h
for m in $MACROS; do
    ind='$'$m
    echo \#undef $m
    eval echo '\#'define $m $ind
done >> src/config.h