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#!/bin/sh
#$Header: /home/amb/cxref/cpp/RCS/config-cpp 1.3 1996/11/16 16:03:01 amb Exp $
#
# C Cross Referencing & Documentation tool. Version 1.3
#
# Automatic cxref-cpp Configuration program.
#
# Written by Andrew M. Bishop
#
# This file Copyright 1995,96 Andrew M. Bishop
# It may be distributed under the GNU Public License, version 2, or
# any higher version. See section COPYING of the GNU Public license
# for conditions under which this file may be redistributed.
#
# Create the Makefile.cpp header.
cat > Makefile.cpp << End-Of-Header
#
# C Cross Referencing & Documentation tool. Version 1.3
#
# CPP Configuration Makefile.
#
# Generated by config-cpp
#
# This file Copyright 1995,96 Andrew M. Bishop
# It may be distributed under the GNU Public License, version 2, or
# any higher version. See section COPYING of the GNU Public license
# for conditions under which this file may be redistributed.
#
End-Of-Header
# Check that the C compiler is gcc
ok_gcc=yes
[ $CC ] || CC=gcc
echo Checking C compiler CC = $CC for compatability
if hash $CC 2> /dev/null ; then
$CC -E -v - < /dev/null 2> /tmp/config-cpp.$$ > /dev/null
ident=`egrep '^GNU CPP' /tmp/config-cpp.$$`
if [ "$ident" ]; then
echo ' ' Yes ... $CC looks like GNU C \'$ident\'
else
echo ' ' No ... $CC does not look like GNU C
ok_gcc=no
fi
else
echo ' ' Error ... Cannot find command $CC
ok_gcc=no
fi
# Work out the gcc predefined definitions to compile in.
echo Working out C compiler built in predefines
cat >> Makefile.cpp << End-Of-Predefines
# The predefined macros and answers to questions
# e.g PREDEFINES = -D__GNUC__=2 -D__GNUC_MINOR__=6 -Dunix -D__unix__ -D__unix -Asystem(unix)
End-Of-Predefines
if [ $ok_gcc = yes ]; then
echo PREDEFINES = `egrep -e -lang-c /tmp/config-cpp.$$ | tr ' ' '\012' | egrep -e '^-[AD]' | tr '\012' ' '` >> Makefile.cpp
else
echo PREDEFINES = '' >> Makefile.cpp
fi
# Work out the gcc predefined include directories to compile in.
echo Working out C compiler built in include paths
cat >> Makefile.cpp << End-Of-Search-Includes
# The predefined include search directories
End-Of-Search-Includes
if [ $ok_gcc = yes ]; then
awk '/include <.+> search/,/End of search/ {if(i>0 && i<4)printf("INCLUDE_DIR%d = %s\n",i,$1);i++}' /tmp/config-cpp.$$ >> Makefile.cpp
else
awk 'BEGIN{for(i=1;i<4;i++)printf("INCLUDE_DIR%d = \n",i);i++}' /dev/null >> Makefile.cpp
fi
# A check of whether we need SVR4 string functions.
echo Checking if the system has the bzero function
svr4_strings=no
cat > test-svr4.c << End-Of-SVR4-String-Test-Program
int main()
{
bzero(0,0);
}
End-Of-SVR4-String-Test-Program
$CC test-svr4.c -o test-svr4 2> /dev/null || svr4_strings=yes
rm -f test-svr4.c test-svr4
cat >> Makefile.cpp << End-Of-SVR4-Strings
# Set if replacements for bzero, bcmp, bcopy and index, rindex are needed
End-Of-SVR4-Strings
if [ $svr4_strings = yes ]; then
echo ' ' No ... the bzero function is not present
echo SVR4_STRINGS = 1 >> Makefile.cpp
else
echo ' ' Yes ... the bzero function is present
echo SVR4_STRINGS = 0 >> Makefile.cpp
fi
# A flag to indicate the the configuration status.
cat >> Makefile.cpp << End-Of-Configuration-Status
# The status of the configuration
# Set CONFIG_STATUS to a null value if cxref-cpp is to be built.
End-Of-Configuration-Status
if [ $ok_gcc = yes ]; then
echo CONFIG_STATUS = >> Makefile.cpp
else
echo CONFIG_STATUS = \'Configuration Failed\' >> Makefile.cpp
fi
# Tidy up at the end.
if [ $ok_gcc = yes ]; then
rm /tmp/config-cpp.$$
else
echo ''
echo You will need to configure cxref-cpp by hand if you want to use it.
echo Read cpp/README file for help and edit cpp/Makefile.cpp yourself.
echo Meanwhile the build of cxref can continue without cxref-cpp.
exit 1
fi
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