#!/bin/false
# vim:ft=sh

#     Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2008-2012
#
# This file is part of roard a part of RoarAudio,
# a cross-platform sound system for both, home and professional use.
# See README for details.
#
# This file is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 3
# as published by the Free Software Foundation.
#
# RoarAudio is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this software; see the file COPYING.  If not, write to
# the Free Software Foundation, 51 Franklin Street, Fifth Floor,
# Boston, MA 02110-1301, USA.

# some very basic string functions:
to_upper() {
 tr 'a-z' 'A-Z'
}

to_escaped() {
 tr 'A-Z/.+-' 'a-z____'
}

error_missing() {
 _object="$1"
 [ "$_object" = '' ] && _object="$last_tested_object"
 echo "Error: $_object is missing but required."
 exit 1
}

write_help() {
 echo 'COMMON OPTIONS:'
 echo
 echo '--ldpath DIR                - Add DIR to (compile time) search list for libs'
 echo '--incpath DIR               - Add DIR to search list for headers'
 echo '--addpath DIR               - Add DIR/lib to lib, DIR/include to header search list'
 echo '--root DIR                  - The same as "--addpath DIR --prefix DIR"'
 echo
 echo '--cflags FLAGS              - Sets additional compiler flags (default: '"$CFLAGS"')'
 echo '--ldflags FLAGS             - Sets additional linker flags (default: '"$LDFLAGS"')'
 echo '--opti LEVEL                - Sets optimizer level (default: '"$OPTI_O"')'
 echo '--link-deps MODE            - Model for linking dependencies: auto, full or indirect'
 echo
 echo '--cc CC                     - Set name of C compiler (CC) to CC'
 echo '--ranlib RANLIB             - Set name of ranlib (RANLIB) to RANLIB'
 echo
 echo '--root-uid UID              - Sets User ID (UID) of the root user/superuser'
 echo
 echo '--no-LIB                    - disable library LIB'
 echo '--maybe-LIB                 - autodetect library LIB (default)'
 echo
 echo '--prefix DIR                - Set general prefix (default: '"$PREFIX"')'
 echo '--prefix-bin DIR            - Set prefix for binaries (default: $PREFIX/bin)'
 echo '--prefix-lib DIR            - Set prefix for libraries (default: $PREFIX/libs)'
 echo '--prefix-inc DIR            - Set prefix for include files (default: $PREFIX/include)'
 echo '--prefix-man DIR            - Set prefix for manpages (default: $PREFIX/man)'
 echo '--prefix-pc DIR             - Set prefix for pkg-config (default: $PREFIX_LIB/pkgconfig)'
 echo
 echo '--without-beta              - Disable beta code'
 echo '--without-experimental      - Disable experimental code'
 echo
 echo '--distribution-version-string STRING'
 echo '                            - Sets distribution part of version string'
 echo
 echo '--mmcu MMCU                 - Sets -mmcu compiler/linker option'
 echo '--target-win32              - Disable everything useful'
 echo '--exec-helper HELPER        - Exec all test programms using this command (HELPER $cmd $args)'
 echo '                              use '\''--exec-helper wine'\'' when building win32 binaries'
 echo
}

parse_option() {
 # Options are given via $n.
 # we can not shift used ones so we tell the caller
 # how many to shift: shift $SHIFT_COUNT
 SHIFT_COUNT=0
 # we also tell if the option was handelt.
 HANDLED=true # will be reset if not.

 case "$1" in
  '--ldpath')
   LDPATH="$LDPATH -L$2"
   SHIFT_COUNT=1
  ;;
  '--incpath')
   INCPATH="$INCPATH -I$2"
   SHIFT_COUNT=1
  ;;
  '--addpath')
   LDPATH="$LDPATH -L$2/lib/"
   INCPATH="$INCPATH -I$2/include/"
   SHIFT_COUNT=1
  ;;
  '--root')
   LDPATH="$LDPATH -L$2/lib/"
   INCPATH="$INCPATH -I$2/include/"
   PREFIX="$2"
   SHIFT_COUNT=1
  ;;
  '--cflags')
   CFLAGS="$2"
   SHIFT_COUNT=1
  ;;
  '--ldflags')
   LDFLAGS="$2"
   SHIFT_COUNT=1
  ;;
  '--opti')
   OPTI_O="$2"
   SHIFT_COUNT=1
  ;;
  '--link-deps')
   LINK_DEPS="$2"
   SHIFT_COUNT=1
  ;;
  '--cc')
   CC="$2"
   SHIFT_COUNT=1
  ;;
  '--ranlib')
   RANLIB="$2"
   SHIFT_COUNT=1
  ;;
  '--root-uid')
   ROOT_UID="$2"
   SHIFT_COUNT=1
  ;;
  '--no-'*)
   lib=$(echo "$1" | sed 's/^--no-//' | to_escaped)
   eval no_lib_$lib=true
  ;;
  '--maybe-'*)
   lib=$(echo "$1" | sed 's/^--maybe-//' | to_escaped)
   eval unset no_lib_$lib
  ;;
  '--distribution-version-string')
   DISTRIBUTION_VERSION_STRING="$2"
   SHIFT_COUNT=1
  ;;
  '--without-beta')
   BETA=false
   EXPERIMENTAL=false
  ;;
  '--without-experimental')
   EXPERIMENTAL=false
  ;;
  '--prefix')
   PREFIX="$2"
   SHIFT_COUNT=1
  ;;
  '--prefix-bin')
   PREFIX_BIN="$2"
   SHIFT_COUNT=1
  ;;
  '--prefix-lib')
   PREFIX_LIB="$2"
   SHIFT_COUNT=1
  ;;
  '--prefix-inc')
   PREFIX_INC="$2"
   SHIFT_COUNT=1
  ;;
  '--prefix-man')
   PREFIX_MAN="$2"
   SHIFT_COUNT=1
  ;;
  '--prefix-pc')
   PREFIX_PC="$2"
   SHIFT_COUNT=1
  ;;
  '--prefix-ckport')
   PREFIX_CKPORT="$2"
   SHIFT_COUNT=1
  ;;
####################################
# autof* options block:
  '--prefix='*)
   PREFIX=$(echo "$1" | cut -d= -f2)
  ;;
  '--prefix-bin='*)
   PREFIX_BIN=$(echo "$1" | cut -d= -f2)
  ;;
  '--prefix-lib='*)
   PREFIX_LIB=$(echo "$1" | cut -d= -f2)
  ;;
  '--prefix-inc='*)
   PREFIX_INC=$(echo "$1" | cut -d= -f2)
  ;;
  '--prefix-man='*)
   PREFIX_MAN=$(echo "$1" | cut -d= -f2)
  ;;
  '--prefix-pc='*)
   PREFIX_PC=$(echo "$1" | cut -d= -f2)
  ;;
  '--prefix-ckport='*)
   PREFIX_CKPORT=$(echo "$1" | cut -d= -f2)
  ;;
####################################
  '--mmcu')
   MMCU="$2"
   SHIFT_COUNT=1
  ;;
  '--exec-helper')
   EXEC_HELPER="$2"
   SHIFT_COUNT=1
  ;;
  '--target-win32')
   TARGET_WIN32=true
  ;;
  *)
   HANDLED=false
  ;;
 esac;

 if $HANDLED
 then
  SHIFT_COUNT=`expr $SHIFT_COUNT + 1`
 fi
}

open_configure_files() {
 exec 3> config.h 4> Makefile.conf 5> config.log
}

update_target() {
 TARGET_CYGWIN=`echo "$SYSNAME" | if grep CYGWIN  > /dev/null; then echo true; else echo false; fi`
 TARGET_WIN32=`echo  "$SYSNAME" | if grep MINGW32 > /dev/null; then echo true; else echo $TARGET_WIN32; fi`

 if [ "$SYSNAME" = 'Darwin' ]
 then
  echo "Adding common $SYSNAME shared lib arguments..."
  SHARED="$SHARED -fno-common -dynamiclib -compatibility_version 0.1 -current_version 0.1.0"
  SHARED_CF="$SHARED_CF -fno-common"
 elif [ "$SYSNAME" = 'NetBSD' ]
 then
  echo "Adding common $SYSNAME libpath arguments..."
  LDPATH="$LDPATH -L/usr/local/lib/"
 elif [ "$SYSNAME" = 'OpenBSD' ]
 then
  echo "Adding common $SYSNAME search path arguments..."
  LDPATH="$LDPATH -L/usr/local/lib/"
  INCPATH="$INCPATH -I/usr/local/include/"
 # echo "Adding $SYSNAME build arguments..."
 # SNDIO_EMUL=false
 elif [ "$SYSNAME" = 'FreeBSD' ]
 then
  echo "Adding common $SYSNAME search path arguments..."
  LDPATH="$LDPATH -L/usr/local/lib/"
  INCPATH="$INCPATH -I/usr/local/include/"
 elif $TARGET_WIN32
 then
  echo "Adding common win32 build arguments..."
  rdynamic=false
  fPIC=false
  SHARED_SUFFIX='.dll'
  TF_E="$TF_E.exe"
 elif $TARGET_CYGWIN
 then
  echo "Adding common cygwin build arguments..."
  rdynamic=false
  fPIC=false
  SHARED_SUFFIX='.dll'
  TF_E="$TF_E.exe"
 fi
}

update_prefixes() {
 [ "$PREFIX_BIN"    = '' ] && PREFIX_BIN="$PREFIX/bin/"
 [ "$PREFIX_LIB"    = '' ] && PREFIX_LIB="$PREFIX/lib/"
 [ "$PREFIX_INC"    = '' ] && PREFIX_INC="$PREFIX/include/"
 [ "$PREFIX_MAN"    = '' ] && PREFIX_MAN="$PREFIX/share/man/"
 [ "$PREFIX_PC"     = '' ] && PREFIX_PC="$PREFIX_LIB/pkgconfig/"
 [ "$PREFIX_CKPORT" = '' ] && PREFIX_CKPORT="$PREFIX_LIB/ckport/db/"
}

update_ccft() {
 CCTF="$CC $CFLAGS $LDFLAGS $LDPATH $INCPATH -Iinclude/ -o $TF_E $TF_C"
}

cleanup_ccft() {
 rm -f $TF_C $TF_E
 if [ "$TARGET_CYGWIN" = 'true' -o "$TARGET_WIN32" = 'true' ]
 then
  echo "Deleting win32 specific temp files: $TF_E.exe"
  rm -f $TF_E.exe
 fi
}

update_cc() {
 if [ "$MMCU" != '' ]
 then
  CC="$CC -mmcu=$MMCU"
 fi
}

write_header_makefileconf() {
 {
  echo "VERSION=$VERSION"
  echo "DISTRIBUTION_VERSION_STRING=$DISTRIBUTION_VERSION_STRING"
  echo
  echo "SHARED=$SHARED"
  echo "SHARED_CF=$SHARED_CF"
  echo "SHARED_SUFFIX=$SHARED_SUFFIX"
  $rdynamic && echo 'rdynamic=-rdynamic'
  $fPIC     && echo 'fPIC=-fPIC'
  $Wextra   && echo 'Wextra=-Wextra'
  echo
  echo "CC=$CC"
  echo "RANLIB=$RANLIB"
  echo "LDPATH=$LDPATH"
  echo "INCPATH=$INCPATH"
  echo "ROAR_BUILDSYSTEM_DIR=$ROAR_BUILDSYSTEM_DIR"
  echo
  echo "OPTI_O=-O$OPTI_O"
  echo
  [ "$CFLAGS"  != '' ] && echo "CFLAGS  += $CFLAGS"
  [ "$LDFLAGS" != '' ] && echo "LDFLAGS += $LDFLAGS"
  echo
  echo "EXEC_HELPER=$EXEC_HELPER"
  echo "CROSS_COMPILE=$CROSS_COMPILE"
  echo
  echo "PREFIX=$PREFIX"
  echo "PREFIX_BIN=$PREFIX_BIN"
  echo "PREFIX_LIB=$PREFIX_LIB"
  echo "PREFIX_INC=$PREFIX_INC"
  echo "PREFIX_MAN=$PREFIX_MAN"
  echo "PREFIX_PC=$PREFIX_PC"
  echo "PREFIX_CKPORT=$PREFIX_CKPORT"
  echo
 } >&4
}

write_footer_makefileconf() {
 {
  echo
  echo '#ll'
 } >&4
}

write_header_configlog() {
 {
  cat <<'EOF'
//config.log:

/*
 * Logfile for configure script $Revision$ of RoarAudio
 */

EOF
  echo '/* uname: ' $(uname -a) '*/'
  echo '/* Date : ' $(date)  '*/'
  echo

  echo
  echo

  echo "ARGS(): $_CARGS"

  for i in PATH SHELL CC RANLIB PKG_CONFIG SYSNAME \
           TARGET_CYGWIN TARGET_WIN32 TARGET_MICROCONTROLLER CROSS_COMPILE \
           MINIMAL EXEC_HELPER \
           "$@"
  do
   eval echo "BASICCONF\($i\): \$$i";
  done

  echo
  echo
 } >&5
}

write_footer_configlog() {
 {
  echo
  echo '//ll'
 } >&5
}

write_header_configh() {
 {
  echo '//config.h:'
  echo
  echo "#ifndef $1"
  echo "#define $1"
  echo
  echo '/* uname: ' $(uname -a) '*/'
  echo '/* Date : ' $(date)  '*/'
  echo
 } >&3
}

write_footer_configh() {
 {
  echo
  echo '#endif'
  echo
  echo '//ll'
 } >&3
}

write_vars_configh_string() {
 {
  for f in "$@"
  do
   eval val=\"\$$f\"
   echo "#define $f \"$val\""
  done
 } >&3
}

write_vars_configh_literal() {
 {
  for f in "$@"
  do
   eval val=\"\$$f\"
   echo "#define $f $val"
  done
 } >&3
}

write_header() {
 write_header_makefileconf
 write_header_configlog
 write_header_configh "$@"
}

write_footer() {
 write_footer_makefileconf
 write_footer_configlog
 write_footer_configh
}

#ll