a C standard library for fx Casio calculators
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
 

237 lines
6.1 KiB

#! /bin/bash
# Fx C standard library configuration script
# output file
confile='fxlibc.cfg'
# Build options
toolchain=sh-elf
prefix=
cflags=
# wanted Makefile
makefile='Makefile.default'
# configuration
debug=false
# ABI support
support_vhex_kernel=false
support_casio_abi_fx9860=false
support_casio_abi_fxcg50=false
# format
format_static=false
format_dynamic=false
#---
# Help screen
#---
help()
{
cat << EOF
Configuration script for the fx calculator standard C library.
Usage: $0 [OPTION]...
You should build out-of-tree by creating a build directory and configuring from
there.
Debug the fxlibc
--debug Enable valgrind flags (-g3)
--unit-test Check C-functoon validity with Criterion
Build options:
--toolchain=TRIPLET Build with a different toolchain
[sh-elf-gcc] (or [gcc] when the '--unit_test' flag is set)
--cflags=FLAGS Additional compiler flags at end of command
--prefix=PREFIX Install prefix (PREFIX/lib and PREFIX/include are used)
ABI support:
--support=<target>,<target>, ...
Support all <target> ABI if supported by the library.
target-list:
* vhex
Enable the Vhex kernel support
* fx9860g, fxcg50
Enable the support of the Casio' ABI
fx9860 covers all fx-9860G II-like monochromes models that support
addins or can be flashed with an OS that does. This includes SH3 and
SH4 machines.
fxcg50 covers just the fx-CG 50; there is some unofficial compatibility
with fx-CG 10/20. All of these are SH4-only.
The 'ABI support' is used to allow some part of the code, in particular the
'unistd' part, I/O management and additionals feature. (like process, fs, ...).
Format:
--static Generate static libraries (default)
--dynamic Generate dynamic libraries (Vhex kernel dependant)
Little note for the generation of dynamic libraries. The superH toolchain currently
used (GCC) does not support the '--shared' flags when the archive is build. So we
need to create manually an archive that can be used like a shared library.
To do this we need to do several steps:
1) build the sources with the PIE mode as if it were a executable without entry point.
2) manually extract symbols defined as 'global' from the generated ELF.
3) we create "stubs": functions that will have the same name than the wanted shared
libraries and will call internal VHEX loader primitives with the libraries
name, function address and size, etc....Then the loader will load the shared
function and override the "user function (stub)" to force it to jump into
the "real" function (trampoline).
4) all generated stubs will be compiled and linked through a static lib that SHOULD
be used in the user program which uses the "dynamic library"
EOF
exit 0
}
#---
# Check early help options
#---
if [[ $# -eq 1 ]] && [[ "$1" = "-h" ]] || [[ "$1" = "--help" ]]; then
help
fi
#---
# Check mandatory build location
# @note:
# * You should build out-of-tree by creating a build directory and configuring
# from there.
#---
if [ -f 'make/Makefile.default' ]; then
echo 'error: you should configure from a build directory, like this:' >&2
echo ' mkdir build && cd build && ../configure [options..]' >&2
exit 1
fi
#---
# Parsing arguments
#---
for arg; do case "$arg" in
# Help options
--help | -h)
help;;
# debug options
--debug)
debug=true;;
--unit-test)
makefile='Malefile.unitest';;
# build options
--toolchain=*)
toolchain=${arg#*=};;
--prefix=*)
prefix=${arg#*=};;
--cflags=*)
cflags=${arg#*=};;
# ABI support
--support=*)
IFS=',' read -ra target_abi <<< "${arg#*=}"
for abi in "${target_abi[@]}"; do case "$abi" in
all)
support_vhex_kernel=true
support_casio_abi_fx9860=true
support_casio_abi_fxcg50=true;;
vhex)
support_vhex_kernel=true;;
fx9860g)
support_casio_abi_fx9860=true;;
fxcg50)
support_casio_abi_fxcg50=true;;
*)
echo "error: unreconized target '$abi', giving up." >&2
exit 1
esac; done;;
# format options
--static)
format_static=true;;
--dynamic)
format_dynamic=true;;
# error part
*)
echo "error: unreconized argument '$arg', giving up." >&2
exit 1
esac; done
#---
# Check error
#---
# If no prefix is specified, install to the GCC's build folder
if [[ -z "$prefix" ]]
then
# ask the toolchain where is his installation path
echo "No prefix specified, let's ask the compiler:"
echo " Call: \"$toolchain-gcc --print-search-dirs | grep install | sed 's/install: //'\""
if ! inst=$("$toolchain"-gcc --print-search-dirs | grep install | sed 's/install: //'); then
echo " Call: returned $?, giving up." >&2
exit 1
fi
echo " Got '$inst'".
# check if the directory exist
if [[ ! -d $inst ]]; then
echo "Directory does not exist (or is not a directory), giving up." >&2
exit 1
fi
prefix=$inst
fi
# TODO
# TODO: check if the wanted lib exist (check lib verion too)!
# TODO
#---
# Dump appropriate Makefile
# @note:
# * We have 3 makefile: normal, dynlib, unit_test
#---
dst='Makefile'
src="../make/$makefile"
if ! [ -e $src ] ; then
echo "error: target makefile ($src) does not exist !" >&2
exit 1
fi
[ -e "$dst" ] && [ "$(readlink $dst)" = "$src" ] && rm $dst
ln -s $src $dst
#---
# Generate the configuration file
#---
generate_config()
{
# build information
echo "CONFIG.TOOLCHAIN := $toolchain"
[ "$prefix" ] && echo "CONFIG.PREFIX := $prefix"
# extra flags
echo 'CONFIG.CFLAGS := '
[ "$cflags" ] && echo "CONFIG.CFLAGS += $cflags"
[ $debug = true ] && echo 'CONFIG.CFLAGS += -g3'
# ABI support
echo 'CONFIG.TARGET := fxlibc'
[ $support_vhex_kernel = true ] && echo 'CONFIG.TARGET += fxlibc-vhex'
[ $support_casio_abi_fx9860 = true ] && echo 'CONFIG.TARGET += fxlibc-fx9860g'
[ $support_casio_abi_fxcg50 = true ] && echo 'CONFIG.TARGET += fxlibc-fxcg50'
# formats
echo 'CONFIG.FORMAT := '
[ $format_static = true ] && echo 'CONFIG.FORMAT += static'
[ $format_dynamic = true ] && echo 'CONFIG.FORMAT += dynamic'
}
generate_config > $confile
echo "Configuration saved in $confile, ready to make!"
exit 0