Some improvements on installation from source.
git-svn-id: svn://svn.code.sf.net/p/sc2/code/trunk@785 8092fc87-c524-0410-9efc-e669fe64eaf9
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meep-eep
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# Auxiliary functions for custom build system
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# Copyright (c) 2002 Serge van den Boom
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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BUILDLOG=/dev/null
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TEMPFILE="/tmp/build.$$.tmp"
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# Description: prints a command to stdout and then executes it
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# Arguments: command with arguments
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# Returns: the return value of the command
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echo_and_perform() {
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cat << EOF
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$@
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EOF
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"$@"
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}
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# Description: read text from stdin to use as a c file to compile
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# Arguments: $1 - CFLAGS to use for compilation (optional)
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# $2 - LDFLAGS to use for linking (optional)
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# Returns: 0 - if compile successful
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# something else - if compile failed
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try_compile_c() {
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if [ -z "$COMPILE" ]; then
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echo "Fatal: Program \$COMPILE is not defined!" >&2
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exit 1
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fi
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cat > "$TEMPFILE.c"
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echo_and_perform $COMPILE $1 $2 "$TEMPFILE.c" \
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-o "$TEMPFILE.out" 2>&1 >> "$BUILDLOG"
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RESULT=$?
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rm -f "$TEMPFILE.c" "$TEMPFILE.out"
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return $RESULT
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}
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# Description: read text from stdin to use as a c file to compile
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# Arguments: $1 - CFLAGS to use for compilation (optional)
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# $2 - LDFLAGS to use for linking (optional)
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# Returns: -1 - if compile failed
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# otherwise - exit status of the program
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try_compile_and_run_c() {
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if [ -z "$COMPILE" ]; then
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echo "Fatal: Program \$COMPILE is not defined!" >&2
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exit 1
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fi
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cat > "$TEMPFILE.c"
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echo_and_perform $COMPILE $1 $2 "$TEMPFILE.c" \
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-o "$TEMPFILE.out" 2>&1 >> "$BUILDLOG"
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if [ $? -ne 0 ]; then
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return -1
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fi
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rm -f -- "$TEMPFILE.c"
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"$TEMPFILE.out"
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RESULT=$?
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rm -f -- "$TEMPFILE.out"
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return $RESULT
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}
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# Description: Output a message to stderr, unless BUILD_SILENT is set
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# Arguments: the message
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build_message() {
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if [ -z "$BUILD_SILENT" ]; then
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cat >&2 << EOF
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$@
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EOF
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fi
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}
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# Description: Output a message to stderr, unless BUILD_SILENT is set
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# Arguments: the message
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build_message() {
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if [ -z "$BUILD_SILENT" ]; then
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cat >&2 << EOF
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$@
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EOF
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fi
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}
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# Description: check if a string is lexicographically before
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# another string
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# Arguments: $1 - the first string
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# $2 - the second string
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# Returns: 0 if $1 is lexicographically before $2
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# 1 otherwise
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lexlt() {
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# The 'test' builtin in some sh shells can't do this.
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# To execute the non-builtin 'test' you need the path, and
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# that differs per system (/bin/test or /usr/bin/test).
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# It says '>=' instead of '<' because expr prints '1' for true,
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# and sh uses 0.
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return `expr "$1" ">=" "$2"`
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}
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# Description: check if a program is present in the path
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# Arguments:
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have_program() {
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local TEMP_NAME TEMP_FILE TEMP_VERSION
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eval eval TEMP_NAME="\\\"\$PROG_${1}_NAME\\\""
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if [ -z "$TEMP_NAME" ]; then
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echo "Fatal: Program '$1' is not defined!" >&2
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exit 1
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fi
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eval eval TEMP_FILE="\\\"\$PROG_${1}_FILE\\\""
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type "$TEMP_FILE" 2>&1 > /dev/null
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if [ $? -ne 0 ]; then
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build_message "$TEMP_NAME not found."
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return 1
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fi
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if [ $# -gt 1 ]; then
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# Minimum version supplied
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eval eval TEMP_VERSION="\\\"\$PROG_${1}_VERSION\\\""
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if [ -z "$TEMP_VERSION" ]; then
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echo "Fatal: Could not determine version of $TEMP_NAME" >&2
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exit 1
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fi
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if lexlt "$TEMP_VERSION" "$2" ; then
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build_message "Found version $TEMP_VERSION of $TEMP_NAME, \
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but version $2 is required!"
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return 1
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fi
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build_message "$TEMP_NAME version $TEMP_VERSION found."
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return 0
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fi
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build_message "$TEMP_NAME found."
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return 0
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}
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# Description: check if a library is present on the system
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# Arguments: $1 - The name of the library without 'lib' of '.so'
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# $2 - (optional) minimum version required
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# Pre: variables LIB_${1}_NAME, LIB_${1}_CFLAGS, and
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# LIB_${1}_LDFLAGS are expected to exist. If two arguments are
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# supplied, so is LIB_${1}_VERSION.
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# Returns: 0 - if the library is found
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# 1 - if the library is not found
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have_library() {
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local LIB TEMP_NAME TEMP_PRESENT TEMP_LDFLAGS TEMP_CFLAGS \
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TEMP_VERSION
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LIB="$1"
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eval eval TEMP_NAME="\\\"\$LIB_${1}_NAME\\\""
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if [ -z "$TEMP_NAME" ]; then
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echo "Fatal: Library '$1' is not defined!" >&2
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exit 1
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fi
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eval TEMP_PRESENT="\$LIB_${LIB}_PRESENT"
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if [ -n "$TEMP_PRESENT" ]; then
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return "$TEMP_PRESENT"
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fi
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eval eval TEMP_LDFLAGS="\\\"\$LIB_${LIB}_LDFLAGS\\\""
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eval eval TEMP_CFLAGS="\\\"\$LIB_${LIB}_CFLAGS\\\""
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try_compile_c "$TEMP_CFLAGS" "$TEMP_LDFLAGS" << EOF
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int main() {
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return 0;
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}
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EOF
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if [ $? -ne 0 ]; then
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eval "LIB_${LIB}_PRESENT"=1
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build_message "$TEMP_NAME not found."
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return 1
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fi
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if [ $# -gt 1 ]; then
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# Minimum version supplied
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eval eval TEMP_VERSION="\\\"\$LIB_${LIB}_VERSION\\\""
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if [ -z "$TEMP_VERSION" ]; then
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eval "LIB_${LIB}_PRESENT"=1
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echo "Fatal: Could not determine version of $TEMP_NAME" >&2
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exit 1
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fi
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if lexlt "$TEMP_VERSION" "$2" ; then
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eval "LIB_${LIB}_PRESENT"=1
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build_message "Found version $TEMP_VERSION of $TEMP_NAME, \
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but version $2 is required"
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return 1
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fi
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eval "LIB_${LIB}_PRESENT"=0
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build_message "$TEMP_NAME version $TEMP_VERSION found."
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return 0
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fi
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eval "LIB_${LIB}_PRESENT"=0
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build_message "$TEMP_NAME found."
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return 0
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}
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# Description: check if a library is present on the system.
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# If it is, add the appropriate flags to CFLAGS and LDFLAGS.
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# If not, bail out.
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# Arguments: $1 - The name of the library without 'lib' of '.so'
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# $2 - (optional) minimum version required
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# Pre: variables LIB_${1}_NAME, LIB_${1}_CFLAGS, and
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# LIB_${1}_LDFLAGS are expected to exist. If two arguments are
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# supplied, so is LIB_${1}_VERSION.
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use_library() {
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local TEMP_CFLAGS TEMP_LDFLAGS
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have_library "$@"
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[ $? -eq 0 ] || exit 1
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eval eval TEMP_CFLAGS="\\\"\$LIB_${1}_CFLAGS\\\""
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eval eval TEMP_LDFLAGS="\\\"\$LIB_${1}_LDFLAGS\\\""
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CFLAGS="$CFLAGS $TEMP_CFLAGS"
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LDFLAGS="$LDFLAGS $TEMP_LDFLAGS"
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return 0
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}
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# Description: check if a symbol is defined.
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# Arguments: $1 - the name of the symbol
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have_symbol() {
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local SYMBOL
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SYMBOL="$1"
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# TODO: I'll want the include handling to be done differently
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# eventually.
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try_compile_c "$TEMP_CFLAGS" "$TEMP_LDFLAGS" << EOF 2>&1 > /dev/null
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#include <stdio.h>
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#include <sys/types.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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int main() {
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(void) $SYMBOL;
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return 0;
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}
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EOF
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if [ $? -gt 0 ]; then
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build_message "Symbol '$SYMBOL' not found."
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return 1
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fi
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build_message "Symbol '$SYMBOL' found."
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return 0
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}
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# Description: check if a symbol is defined.
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# set HAVE_<NAME> accordingly, where <NAME> is the capitalized
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# name of the symbol.
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# Arguments: $1 - the name of the symbol
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define_have_symbol() {
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local NAME VALUE
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NAME=`$TR a-z A-Z << EOF
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$1
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EOF
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`
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if have_symbol "$1"; then
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add_symbol "HAVE_$NAME" "#define HAVE_$NAME"
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else
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add_symbol "HAVE_$NAME" "#undef HAVE_$NAME"
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fi
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}
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# Description: check if a header is available.
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# Arguments: $1 - the name of the header file
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have_header() {
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local HEADER
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HEADER="$1"
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try_compile_c "$TEMP_CFLAGS" "$TEMP_LDFLAGS" << EOF 2>&1 > /dev/null
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#include <$HEADER>
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int main() {
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return 0;
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}
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EOF
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if [ $? -gt 0 ]; then
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build_message "Header '$HEADER' not found."
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return 1
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fi
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build_message "Header '$HEADER' found."
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return 0
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}
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# Description: check if a header is available.
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# set HAVE_<NAME> accordingly, where <NAME> is the capitalized
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# name of the header file. "sys/time.h" becomes "SYS_TIME_H".
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# Arguments: $1 - the name of the symbol
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define_have_header() {
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local NAME VALUE
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NAME=`$TR /.a-z __A-Z << EOF
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$1
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EOF
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`
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if have_header "$1"; then
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add_symbol "HAVE_$NAME" "#define HAVE_$NAME"
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else
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add_symbol "HAVE_$NAME" "#undef HAVE_$NAME"
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fi
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}
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# Description: Add a symbol to be replaced by substitute_vars
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# $HAVE_SYMBOLS will contain the variable names of all
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# symbols added by define_have_symbol and should be passed to
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# substitute_vars for the file you want them in.
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# Arguments: $1 - the symbol to add
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# $2 - the value of the symbol
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add_symbol() {
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local NAME
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eval NAME="$1"
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eval "$NAME"=\"\$2\"
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HAVE_SYMBOLS="$HAVE_SYMBOLS $NAME"
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}
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check_endianness() {
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try_compile_and_run_c << EOF
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int main() {
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int i;
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i = 1;
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return *((unsigned char *) &i);
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}
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EOF
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if [ $? -eq 0 ]; then
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build_message "Big-endian machine."
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add_symbol WORDS_BIGENDIAN "#define WORDS_BIGENDIAN"
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else
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build_message "Little-endian machine."
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add_symbol WORDS_BIGENDIAN "#undef WORDS_BIGENDIAN"
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fi
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}
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# Description: substitute variables in files.
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# Every supplied variable name found between @'s in the
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# supplied files, is replaced by its value.
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# Arguments: $1 - The name of the variable which contains a list of
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# variables to substitute in the files.
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# $2 - The name of the variable which contains a list of
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# files to substitute variables in.
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# If a filename ends on .in, that filename is used as
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# source, and the filename without .in as target.
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# If a filename doesn't end on .in, that filename is used
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# as target, and the filename with .in attached as source.
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substitute_vars() {
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local VARS VAR VALUE FILES FILE
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eval VARS=\"\$$1\"
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eval FILES=\"\$$2\"
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for VAR in $VARS; do
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# Escape all / in VAR so that we can use / as seperator char for sed
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eval VALUE=\"\$$VAR\"
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VALUE=$(echo "$VALUE" | sed 's,\([\&/]\),\\\1,g')
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cat << EOF
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s/@${VAR}@/${VALUE}/g
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EOF
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done > "${TEMPFILE}.sed"
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for FILE in $FILES; do
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FILE="${FILE%.in}"
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$SED -f "${TEMPFILE}.sed" < "$FILE".in > "$FILE"
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done
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rm -- "${TEMPFILE}.sed"
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}
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# Include information about programs we can detect
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. build/unix/config_proginfo
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# Some initialisations
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HAVE_SYMBOLS=""
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# Requirements for the config program itself
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have_program sed || exit 1
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SED="$PROG_sed_FILE"
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have_program tr || exit 1
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TR="$PROG_tr_FILE"
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have_program make || exit 1
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MAKE="$PROG_make_FILE"
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Reference in New Issue
Block a user