xbps/configure
Juan RP f888b582f9 Added a configure script to emulate GNU autoconf and related changes.
Changes included in this set:

 * Added strlcat() and strlcpy() from OpenBSD, always use them if the
   system does not have them built in.
 * Changed an array of PATH_MAX size allocated in the stack, to a dynamically
   allocated buffer from heap. This should reduce memory usage a bit.
 * Simplify code that implemented a homegrown realpath(3) implementation,
   simply use realpath(3).
 * If compiler supports -fstack-protector, build all code with
   -D_FORTIFY_SOURCE=2 and --param ssp-buffer-size=1 so that all
   buffers are protected.
2010-05-19 22:38:27 +02:00

419 lines
9.5 KiB
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#!/bin/sh
# Try and be like autotools configure, but without autotools
# Ensure that we do not inherit these from env
STRLCPY=
STRLCAT=
OS=
BUILD=
HOST=
TARGET=
DEBUG=
BUILD_API_DOCS=
BUILD_PIE=
EXTERNAL_PROPLIB=
usage()
{
cat <<_EOF
\`configure' configures XBPS to adapt to many kinds of systems.
By default, \`make install' will install all the files in
\`/usr/local/sbin', \`/usr/local/lib' etc. You can specify
an installation prefix other than \`/usr/local' using \`--prefix',
for instance \`--prefix=\$HOME'.
--prefix=DIR install architecture-independent files in PREFIX
--sbindir=DIR system admin executables [PREFIX/sbin]
--libdir=DIR object code libraries [PREFIX/lib]
--includedir=DIR C header files [PREFIX/include]
--mandir=DIR man documentation [PREFIX/share/man]
--datadir=DIR read-only architecture-independent data [PREFIX/share]
--debug Build with debugging code and symbols
--with-pie Build XBPS programs as PIE (default disabled)
--with-api-docs install XBPS API Library documentation (default disabled)
--with-external-proplib Use external proplib [default disabled]
_EOF
exit 1
}
for x; do
opt=${x%%=*}
var=${x#*=}
case "$opt" in
--debug) DEBUG=yes;;
--prefix) PREFIX=$var;;
--sbindir) SBINDIR=$var;;
--mandir) MANDIR=$var;;
--datadir) SHAREDIR=$var;;
--build) BUILD=$var;;
--host) HOST=$var;;
--target) TARGET=$var;;
--includedir) INCLUDEDIR=$var;;
--libdir) LIBDIR=$var;;
--datadir|--infodir) ;; # ignore autotools
--with-api-docs) BUILD_API_DOCS=$var;;
--with-pie) BUILD_PIE=$var;;
--with-external-proplib) EXTERNAL_PROPLIB=$var;;
--help) usage;;
*) echo "$0: WARNING: unknown option $opt" >&2;;
esac
done
: ${SED:=sed}
: ${PREFIX:=/usr/local}
: ${SYSCONFDIR:=${PREFIX}/etc}
: ${SBINDIR:=${PREFIX}/sbin}
: ${LIBDIR:=${PREFIX}/lib}
: ${SHAREDIR:=${PREFIX}/share}
: ${MANDIR:=${PREFIX}/share/man}
: ${INCLUDEDIR:=${PREFIX}/include}
: ${TOPDIR:=..}
_which()
{
x="$(which "$1" 2>/dev/null)"
if [ -n "$x" ]; then
echo "$x"
return 0
fi
for x in /sbin/"$1" /usr/sbin/"$1" \
/usr/pkg/sbin/"$1" /usr/local/sbin/"$1"
do
if [ -e "$x" ]; then
echo "$x"
return 0
fi
done
return 1
}
CONFIG_H=config.h
CONFIG_MK=config.mk
if [ -z "$BUILD" ]; then
BUILD=`uname -m`-unknown-`uname -s | tr '[:upper:]' '[:lower:]'`
fi
if [ -z "$HOST" ]; then
[ -z "$TARGET" ] && TARGET=$BUILD
HOST=$TARGET
fi
if [ -z "$TARGET" ]; then
[ -z "$HOST" ] && HOST=$BUILD
TARGET=$HOST
fi
if [ -z "$OS" ]; then
# Derive OS from cpu-manufacturer-os-kernel
CPU=${TARGET%%-*}
REST=${TARGET#*-}
MANU=${REST%%-*}
REST=${REST#*-}
OS=${REST%%-*}
REST=${REST#*-}
KERNEL=${REST%%-*}
fi
echo "Configuring xbps for ... $OS"
rm -f $CONFIG_H $CONFIG_MK
echo "# Common vars used by XBPS on $OS." >$CONFIG_MK
echo "/* $OS */" >$CONFIG_H
echo "TOPDIR ?= $TOPDIR" >>$CONFIG_MK
echo "PREFIX ?= $PREFIX" >>$CONFIG_MK
echo "SBINDIR ?= $SBINDIR" >>$CONFIG_MK
echo "INCLUDEDIR ?= $INCLUDEDIR" >>$CONFIG_MK
echo "LIBDIR ?= $LIBDIR" >>$CONFIG_MK
echo "MANDIR ?= $MANDIR" >>$CONFIG_MK
echo "SHAREDIR ?= $SHAREDIR" >>$CONFIG_MK
[ -z "$DEBUG" ] && DEBUG=no
[ -z "$BUILD_PIE" ] && BUILD_PIE_VAL=no
if [ -z "$CC" ]; then
printf "Looking for compiler ... "
for b in $TARGET- ""; do
for cc in gcc pcc icc cc clang; do
if type $b$cc >/dev/null 2>&1; then
CC=$b$cc
echo "$CC"
break
fi
done
[ -n "$CC" ] && break
done
if [ -z "$CC" ]; then
echo
echo "no suitable compiler found - aborting" >&2
exit 1
fi
else
echo "Using compiler $CC"
fi
echo "CC = $CC" >>$CONFIG_MK
echo "CFLAGS = -fPIC -DPIC" >>$CONFIG_MK
echo "LDFLAGS = -L\$(TOPDIR)/lib -L\$(LIBDIR)" >>$CONFIG_MK
echo "CPPFLAGS = -I. -I\$(TOPDIR) -I\$(TOPDIR)/include" >>$CONFIG_MK
echo "CPPFLAGS += -DHAVE_CONFIG_H" >>$CONFIG_MK
if [ -n "$DEBUG" -a "$DEBUG" != no -a "$DEBUG" != false ]; then
echo "Building with debugging symbols."
echo "INSTALL_STRIPPED =" >>$CONFIG_MK
echo "CFLAGS += -g" >>$CONFIG_MK
echo "CPPFLAGS += -DDEBUG" >>$CONFIG_MK
else
echo "INSTALL_STRIPPED = -s" >>$CONFIG_MK
fi
case "$OS" in
linux)
echo "CPPFLAGS += -D_XOPEN_SOURCE=600 -D_GNU_SOURCE" >>$CONFIG_MK
echo "CPPFLAGS += -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE" >> $CONFIG_MK
echo "CPPFLAGS += -D_LARGE_FILES" >> $CONFIG_MK
;;
*)
;;
esac
#
# Check if external proplib should be used instead.
#
if [ -z "$EXTERNAL_PROPLIB" ]; then
EXTERNAL_PROPLIB_VALUE=no
echo "CPPFLAGS += -I\$(TOPDIR)/lib/portableproplib" >>$CONFIG_MK
else
EXTERNAL_PROPLIB_VALUE=yes
echo "USE_EXTERNAL_PROPLIB = 1" >>$CONFIG_MK
echo "LDFLAGS += -lprop" >>$CONFIG_MK
echo "STATIC_PROPLIB = -lprop" >> $CONFIG_MK
fi
# Add CPPFLAGS and CFLAGS to CC for testing features
XCC="$CC `$SED -n -e 's/CPPLAGS+=*\(.*\)/\1/p' $CONFIG_MK`"
XCC="$XCC `$SED -n -e 's/CFLAGS+=*\(.*\)/\1/p' $CONFIG_MK`"
check_compiler_flag()
{
local flag="$1"
local mode="$2"
local var="$3"
local rv=0
if [ -z "$var" ]; then
var="CFLAGS"
fi
printf "Checking if $CC supports -${mode}${flag} ... "
cat <<EOF >_ccflag.c
#include <stdio.h>
int main(void) { return 0; }
EOF
if $XCC -${mode}${flag} _ccflag.c -o _ccflag 2>_ccflag.err; then
if ! test -s _ccflag.err; then
if [ "$mode" = "W" ]; then
echo "CPPFLAGS += -${mode}${flag}" >>$CONFIG_MK
else
echo "$var += -${mode}${flag}" >>$CONFIG_MK
fi
echo "yes."
else
rv=1
echo "no."
fi
else
rv=1
echo "no."
fi
rm -f _ccflag.c _ccflag _ccflag.err
return $rv
}
#
# Check for some compiler warning flags.
#
for f in all extra error shadow "format=2" missing-prototypes \
missing-declarations nested-externs \
cast-align cast-qual pointer-arith comment unused-macros \
declaration-after-statement stack-protector; do
check_compiler_flag ${f} W
done
#
# Check for some compiler flags.
#
check_compiler_flag stack-protector-all f
if [ $? -ne 0 ]; then
check_compiler_flag stack-protector f
fi
if [ $? -eq 0 ]; then
check_compiler_flag "param ssp-buffer-size=1" -
fi
if [ $? -eq 0 ]; then
echo "CPPFLAGS += -D_FORTIFY_SOURCE=2" >>$CONFIG_MK
fi
check_compiler_flag "visibility=default" f SHAREDLIB_CFLAGS
check_compiler_flag "std=c99"
#
# Check if -fPIE and -pie are supported if --build-pie is set.
#
if [ -n "$BUILD_PIE" ]; then
BUILD_PIE_VAL=yes
echo "Building programs as PIE (Position Independent Executable)."
check_compiler_flag PIE f PROG_CFLAGS
check_compiler_flag pie "" PROG_LDFLAGS
fi
#
# Check for strlcpy().
#
printf "Checking for strlcpy() ... "
cat <<EOF >_strlcpy.c
#include <string.h>
int main(void) {
const char s1[] = "foo";
char s2[10];
strlcpy(s2, s1, sizeof(s2));
return 0;
}
EOF
if $XCC _strlcpy.c -o _strlcpy 2>/dev/null; then
STRLCPY=yes
else
STRLCPY=no
fi
echo "$STRLCPY."
rm -f _strlcpy.c _strlcpy
if [ "$STRLCPY" = no ]; then
echo "COMPAT_SRCS += compat/strlcpy.o" >>$CONFIG_MK
echo "#include \"strlcpy.h\"" >>$CONFIG_H
echo "CPPFLAGS += -DHAVE_STRLCPY" >> $CONFIG_MK
fi
#
# Check for strlcat().
printf "Checking for strlcat() ... "
cat <<EOF > _strlcat.c
#include <string.h>
int main(void) {
const char src[] = "foo"
char dst[10];
strlcat(dst, src, sizeof(dst));
return 0;
}
EOF
if $XCC _strlcat.c -o _strlcat 2>/dev/null; then
STRLCAT=yes
else
STRLCAT=no
fi
echo "$STRLCAT."
rm -f _strlcat.c _strlcat
if [ "$STRLCAT" = no ]; then
echo "COMPAT_SRCS += compat/strlcat.o" >>$CONFIG_MK
echo "#include \"strlcat.h\"" >>$CONFIG_H
echo "CPPFLAGS += -DHAVE_STRLCAT" >>$CONFIG_MK
fi
#
# If building API library documentation, doxygen and graphviz are required.
#
if [ -n "$BUILD_API_DOCS" ]; then
echo "Building API documentation via doxygen and graphviz."
printf "Checking for doxygen ..."
DOXYGEN_BIN=$(_which doxygen)
if [ -z "$DOXYGEN_BIN" ]; then
echo "not found, exiting."
exit 1
else
echo yes
fi
printf "Checking for graphviz ... "
DOT_BIN=$(_which dot)
if [ -z "$DOT_BIN" ]; then
echo "dot(1) command not found, exiting."
exit 1
else
echo yes
fi
echo "BUILD_API_DOCS= yes" >> $CONFIG_MK
BUILD_API_DOCS_VALUE=yes
else
BUILD_API_DOCS_VALUE=no
fi
#
# pkg-config is required to know dependencies for static linking.
#
printf "Checking for pkg-config ... "
PKGCONFIG_BIN=$(_which pkg-config)
if [ -z "$PKGCONFIG_BIN" ]; then
echo "not found, exiting."
exit 1
else
echo yes
fi
#
# zlib with pkg-config support is required.
#
printf "Checking for zlib via pkg-config ..."
if ! $PKGCONFIG_BIN --exists zlib; then
echo "zlib.pc file not found, exiting."
exit 1
else
echo "found version $($PKGCONFIG_BIN --modversion zlib)."
fi
echo "STATIC_LIBS = -lz \$(STATIC_PROPLIB) -lpthread" >>$CONFIG_MK
#
# OpenSSL libssl with pkg-config support is required.
#
printf "Checking for OpenSSL via pkg-config ..."
if ! $PKGCONFIG_BIN --exists libssl; then
echo "libssl.pc file not found, exiting."
exit 1
else
echo "found version $($PKGCONFIG_BIN --modversion libssl)."
fi
echo "STATIC_LIBS += $($PKGCONFIG_BIN --libs --static libssl)" >>$CONFIG_MK
#
# libarchive >= 2.8.0 with pkg-config support is required.
#
printf "Checking for libarchive via pkg-config ... "
if ! $PKGCONFIG_BIN --exists libarchive; then
echo "libarchive.pc file not found, exiting."
exit 1
else
echo "found version $($PKGCONFIG_BIN --modversion libarchive)."
fi
echo "STATIC_LIBS += $($PKGCONFIG_BIN --libs --static libarchive)" >>$CONFIG_MK
echo
echo " XBPS has been configured with the following options:"
echo
echo " SBINDIR = $SBINDIR"
echo " LIBDIR = $LIBDIR"
echo " INCLUDEDIR = $INCLUDEDIR"
echo " SHAREDIR = $SHAREDIR"
echo " MANDIR = $MANDIR"
echo " BUILD_API_DOCS = $BUILD_API_DOCS_VALUE"
echo " BUILD_PIE = $BUILD_PIE_VAL"
echo " DEBUG = $DEBUG"
echo " EXTERNAL PROPLIB = $EXTERNAL_PROPLIB_VALUE"
echo
echo " You can now run make && make install clean."
echo
exit 0