configure

#!/bin/sh

# Copyright (C) 2023 Philippe Aubertin.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
# 
# 3. Neither the name of the author nor the names of other contributors
#    may be used to endorse or promote products derived from this software
#    without specific prior written permission.
# 
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS" AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY
# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

ZLIB=userspace/lib/zlib
BZIP2=userspace/lib/bzip2

CFLAGS="-std=c99 -ffreestanding -I../../../include"
ARCH="-m32"

echo "Configuring zlib in $ZLIB"

if [ ! -f "$ZLIB/zlib.h" ]; then
    echo ""
    echo "*** ERROR: zlib.h not found in $ZLIB."
    echo "*** "
    echo "*** Did you forget to initialize the git submodules when you cloned the repository? "
    echo "*** If so, you can clone and initialize them now with the following command:"
    echo "***"
    echo "***   git submodule update --init"
    echo "***"
    echo "*** See README.md for detail."
    exit 1
fi

echo "*** Please ignore any warning about vsnprintf() not being found in stdio.h."
echo "*** Jinue does not use the part of the code in zlib where that warning is relevant."

(cd $ZLIB; CFLAGS="$CFLAGS" ./configure --solo --static --warn --const --archs="$ARCH")

echo "Configuring bzip2 in $ZLIB"

if [ ! -f "$BZIP2/bzlib.h" ]; then
    echo ""
    echo "*** ERROR: bzlib.h not found in $BZIP2."
    echo "*** "
    echo "*** Did you forget to initialize the git submodules when you cloned the repository? "
    echo "*** If so, you can clone and initialize them now with the following command:"
    echo "***"
    echo "***   git submodule update --init"
    echo "***"
    echo "*** See README.md for detail."
    exit 1
fi

echo "*** If you re-run this configuration script after having already run it once, you will"
echo "*** see warning messages similar to the following which you can safely ignore:"
echo "***"
echo "***   Reversed (or previously applied) patch detected!  Skipping patch."
echo "***   5 out of 5 hunks ignored"
echo "***"

# There is no configure script for bzip2 but the CFLAGS are hardcoded in the
# Makefile, so let's patch them there. Let's also remove code related to
# compression to reduce size and the number of compiler warnings.
(cd $BZIP2 ; (cat << "EOF") | sed -e "s@%%%-CFLAGS-%%%@$CFLAGS $ARCH@" | patch -Np1 -r-
diff --git a/Makefile b/Makefile
index b0fef95..4987a38 100644
--- a/Makefile
+++ b/Makefile
@@ -21,17 +21,15 @@ RANLIB=ranlib
 LDFLAGS=
 
 BIGFILES=-D_FILE_OFFSET_BITS=64
-CFLAGS=-Wall -Winline -O2 -g $(BIGFILES)
+CFLAGS=%%%-CFLAGS-%%% -Wall -Winline -O2 -g $(BIGFILES) -DBZ_NO_STDIO
 
 # Where you want it installed when you do 'make install'
 PREFIX=/usr/local
 
 
-OBJS= blocksort.o  \
-      huffman.o    \
+OBJS= huffman.o    \
       crctable.o   \
       randtable.o  \
-      compress.o   \
       decompress.o \
       bzlib.o
 
diff --git a/bzlib.c b/bzlib.c
index 100873c..2a9bc33 100644
--- a/bzlib.c
+++ b/bzlib.c
@@ -113,6 +113,7 @@ void default_bzfree ( void* opaque, void* addr )
 
 
 /*---------------------------------------------------*/
+#if 0
 static
 void prepare_new_block ( EState* s )
 {
@@ -144,6 +145,7 @@ Bool isempty_RL ( EState* s )
 }
 
 
+
 /*---------------------------------------------------*/
 int BZ_API(BZ2_bzCompressInit) 
                     ( bz_stream* strm, 
@@ -482,6 +484,7 @@ int BZ_API(BZ2_bzCompressEnd)  ( bz_stream *strm )
 
    return BZ_OK;
 }
+#endif
 
 
 /*---------------------------------------------------*/
@@ -1244,6 +1247,7 @@ void BZ_API(BZ2_bzReadGetUnused)
 /*---------------------------------------------------*/
 
 /*---------------------------------------------------*/
+#if 0
 int BZ_API(BZ2_bzBuffToBuffCompress) 
                          ( char*         dest, 
                            unsigned int* destLen,
@@ -1293,7 +1297,7 @@ int BZ_API(BZ2_bzBuffToBuffCompress)
    BZ2_bzCompressEnd ( &strm );
    return ret;
 }
-
+#endif
 
 /*---------------------------------------------------*/
 int BZ_API(BZ2_bzBuffToBuffDecompress) 
EOF
)