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configure.sh
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#! /bin/sh
#
# SPDX-License-Identifier: BSD-2-Clause
#
# Copyright (c) 2018-2025 Gavin D. Howard and contributors.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright notice, this
# list of conditions and the following disclaimer.
#
# * 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.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT HOLDER 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.
#
script="$0"
scriptdir=$(dirname "$script")
script=$(basename "$script")
builddir=$(pwd)
. "$scriptdir/scripts/functions.sh"
# Simply prints the help message and quits based on the argument.
# @param msg The help message to print.
usage() {
if [ $# -gt 0 ]; then
_usage_val=1
printf '%s\n\n' "$1"
else
_usage_val=0
fi
printf 'usage:\n'
printf ' %s -h\n' "$script"
printf ' %s --help\n' "$script"
printf ' %s [-a|-bD|-dB|-c] [-CeEfgGHilmMNPrtTvz] [-O OPT_LEVEL] [-k KARATSUBA_LEN]\\\n' "$script"
printf ' [-s SETTING] [-S SETTING] [-p TYPE]\n'
printf ' %s \\\n' "$script"
printf ' [--library|--bc-only --disable-dc|--dc-only --disable-bc] \\\n'
printf ' [--force --debug --disable-extra-math --disable-generated-tests] \\\n'
printf ' [--disable-history --disable-man-pages --disable-nls --disable-strip] \\\n'
printf ' [--enable-editline] [--enable-readline] [--enable-internal-history] \\\n'
printf ' [--disable-problematic-tests] [--install-all-locales] \\\n'
printf ' [--opt=OPT_LEVEL] [--karatsuba-len=KARATSUBA_LEN] \\\n'
printf ' [--set-default-on=SETTING] [--set-default-off=SETTING] \\\n'
printf ' [--predefined-build-type=TYPE] \\\n'
printf ' [--prefix=PREFIX] [--bindir=BINDIR] [--datarootdir=DATAROOTDIR] \\\n'
printf ' [--datadir=DATADIR] [--mandir=MANDIR] [--man1dir=MAN1DIR] \\\n'
printf ' [--man3dir=MAN3DIR]\n'
if [ "$_usage_val" -ne 0 ]; then
exit "$_usage_val"
fi
printf '\n'
printf ' -a, --library\n'
printf ' Build the libbcl instead of the programs. This is meant to be used with\n'
printf ' other software like programming languages that want to make use of the\n'
printf ' parsing and math capabilities. This option will install headers using\n'
printf ' `make install`.\n'
printf ' -b, --bc-only\n'
printf ' Build bc only. It is an error if "-d", "--dc-only", "-B", or\n'
printf ' "--disable-bc" are specified too.\n'
printf ' -B, --disable-bc\n'
printf ' Disable bc. It is an error if "-b", "--bc-only", "-D", or "--disable-dc"\n'
printf ' are specified too.\n'
printf ' -C, --disable-clean\n'
printf ' Disable the clean that configure.sh does before configure.\n'
printf ' -d, --dc-only\n'
printf ' Build dc only. It is an error if "-b", "--bc-only", "-D", or\n'
printf ' "--disable-dc" are specified too.\n'
printf ' -D, --disable-dc\n'
printf ' Disable dc. It is an error if "-d", "--dc-only", "-B", or "--disable-bc"\n'
printf ' are specified too.\n'
printf ' -e, --enable-editline\n'
printf ' Enable the use of libedit/editline. This is meant for those users that\n'
printf ' want vi-like or Emacs-like behavior in history. This option is ignored\n'
printf ' if history is disabled. If the -r or -i options are given with this\n'
printf ' option, the last occurrence of all of the three is used.\n'
printf ' -E, --disable-extra-math\n'
printf ' Disable extra math. This includes: "$" operator (truncate to integer),\n'
printf ' "@" operator (set number of decimal places), and r(x, p) (rounding\n'
printf ' function). Additionally, this option disables the extra printing\n'
printf ' functions in the math library.\n'
printf ' -f, --force\n'
printf ' Force use of all enabled options, even if they do not work. This\n'
printf ' option is to allow the maintainer a way to test that certain options\n'
printf ' are not failing invisibly. (Development only.)\n'
printf ' -g, --debug\n'
printf ' Build in debug mode. Adds the "-g" flag, and if there are no\n'
printf ' other CFLAGS, and "-O" was not given, this also adds the "-O0"\n'
printf ' flag. If this flag is *not* given, "-DNDEBUG" is added to CPPFLAGS\n'
printf ' and a strip flag is added to the link stage.\n'
printf ' -G, --disable-generated-tests\n'
printf ' Disable generating tests. This is for platforms that do not have a\n'
printf ' GNU bc-compatible bc to generate tests.\n'
printf ' -h, --help\n'
printf ' Print this help message and exit.\n'
printf ' -H, --disable-history\n'
printf ' Disable history.\n'
printf ' -i, --enable-internal-history\n'
printf ' Enable the internal history implementation and do not depend on either\n'
printf ' editline or readline. This option is ignored if history is disabled.\n'
printf ' If this option is given along with -e and -r, the last occurrence of\n'
printf ' all of the three is used.\n'
printf ' -k KARATSUBA_LEN, --karatsuba-len KARATSUBA_LEN\n'
printf ' Set the karatsuba length to KARATSUBA_LEN (default is 32).\n'
printf ' It is an error if KARATSUBA_LEN is not a number or is less than 16.\n'
printf ' -l, --install-all-locales\n'
printf ' Installs all locales, regardless of how many are on the system. This\n'
printf ' option is useful for package maintainers who want to make sure that\n'
printf ' a package contains all of the locales that end users might need.\n'
printf ' -M, --disable-man-pages\n'
printf ' Disable installing manpages.\n'
printf ' -N, --disable-nls\n'
printf ' Disable POSIX locale (NLS) support.\n'
printf ' ***WARNING***: Locales ignore the prefix because they *must* be\n'
printf ' installed at a fixed location to work at all. If you do not want that\n'
printf ' to happen, you must disable locales (NLS) completely.\n'
printf ' -O OPT_LEVEL, --opt OPT_LEVEL\n'
printf ' Set the optimization level. This can also be included in the CFLAGS,\n'
printf ' but it is provided, so maintainers can build optimized debug builds.\n'
printf ' This is passed through to the compiler, so it must be supported.\n'
printf ' -p TYPE, --predefined-build-type=TYPE\n'
printf ' Sets a given predefined build type with specific defaults. This is for\n'
printf ' easy setting of predefined builds. For example, to get a build that\n'
printf ' acts like the GNU bc by default, TYPE should be "GNU" (without the\n'
printf ' quotes) This option *must* come before any others that might change the\n'
printf ' build options. Currently supported values for TYPE include: "BSD" (for\n'
printf ' matching the BSD bc and BSD dc), "GNU" (for matching the GNU bc and\n'
printf ' dc), "GDH" (for the preferred build of the author, Gavin D. Howard),\n'
printf ' and "DBG" (for the preferred debug build of the author). This will\n'
printf ' also automatically enable a release build (except for "DBG").\n'
printf ' -P, --disable-problematic-tests\n'
printf ' Disables problematic tests. These tests usually include tests that\n'
printf ' can cause a SIGKILL because of too much memory usage.\n'
printf ' -r, --enable-readline\n'
printf ' Enable the use of libreadline/readline. This is meant for those users\n'
printf ' that want vi-like or Emacs-like behavior in history. This option is\n'
printf ' ignored if history is disabled. If this option is given along with -e\n'
printf ' and -i, the last occurrence of all of the three is used.\n'
printf ' -s SETTING, --set-default-on SETTING\n'
printf ' Set the default named by SETTING to on. See below for possible values\n'
printf ' for SETTING. For multiple instances of the -s or -S for the the same\n'
printf ' setting, the last one is used.\n'
printf ' -S SETTING, --set-default-off SETTING\n'
printf ' Set the default named by SETTING to off. See below for possible values\n'
printf ' for SETTING. For multiple instances of the -s or -S for the the same\n'
printf ' setting, the last one is used.\n'
printf ' -T, --disable-strip\n'
printf ' Disable stripping symbols from the compiled binary or binaries.\n'
printf ' Stripping symbols only happens when debug mode is off.\n'
printf ' --prefix PREFIX\n'
printf ' The prefix to install to. Overrides "$PREFIX" if it exists.\n'
printf ' If PREFIX is "/usr", install path will be "/usr/bin".\n'
printf ' Default is "/usr/local".\n'
printf ' ***WARNING***: Locales ignore the prefix because they *must* be\n'
printf ' installed at a fixed location to work at all. If you do not want that to\n'
printf ' happen, you must disable locales (NLS) completely.\n'
printf ' --bindir BINDIR\n'
printf ' The directory to install binaries in. Overrides "$BINDIR" if it exists.\n'
printf ' Default is "$PREFIX/bin".\n'
printf ' --includedir INCLUDEDIR\n'
printf ' The directory to install headers in. Overrides "$INCLUDEDIR" if it\n'
printf ' exists. Default is "$PREFIX/include".\n'
printf ' --libdir LIBDIR\n'
printf ' The directory to install libraries in. Overrides "$LIBDIR" if it exists.\n'
printf ' Default is "$PREFIX/lib".\n'
printf ' --datarootdir DATAROOTDIR\n'
printf ' The root location for data files. Overrides "$DATAROOTDIR" if it exists.\n'
printf ' Default is "$PREFIX/share".\n'
printf ' --datadir DATADIR\n'
printf ' The location for data files. Overrides "$DATADIR" if it exists.\n'
printf ' Default is "$DATAROOTDIR".\n'
printf ' --mandir MANDIR\n'
printf ' The location to install manpages to. Overrides "$MANDIR" if it exists.\n'
printf ' Default is "$DATADIR/man".\n'
printf ' --man1dir MAN1DIR\n'
printf ' The location to install Section 1 manpages to. Overrides "$MAN1DIR" if\n'
printf ' it exists. Default is "$MANDIR/man1".\n'
printf ' --man3dir MAN3DIR\n'
printf ' The location to install Section 3 manpages to. Overrides "$MAN3DIR" if\n'
printf ' it exists. Default is "$MANDIR/man3".\n'
printf '\n'
printf 'In addition, the following environment variables are used:\n'
printf '\n'
printf ' CC C compiler. Must be compatible with POSIX c99. If there is a\n'
printf ' space in the basename of the compiler, the items after the\n'
printf ' first space are assumed to be compiler flags, and in that case,\n'
printf ' the flags are automatically moved into CFLAGS. Default is\n'
printf ' "c99".\n'
printf ' HOSTCC Host C compiler. Must be compatible with POSIX c99. If there is\n'
printf ' a space in the basename of the compiler, the items after the\n'
printf ' first space are assumed to be compiler flags, and in the case,\n'
printf ' the flags are automatically moved into HOSTCFLAGS. Default is\n'
printf ' "$CC".\n'
printf ' HOST_CC Same as HOSTCC. If HOSTCC also exists, it is used.\n'
printf ' CFLAGS C compiler flags.\n'
printf ' HOSTCFLAGS CFLAGS for HOSTCC. Default is "$CFLAGS".\n'
printf ' HOST_CFLAGS Same as HOST_CFLAGS. If HOST_CFLAGS also exists, it is used.\n'
printf ' CPPFLAGS C preprocessor flags. Default is "".\n'
printf ' LDFLAGS Linker flags. Default is "".\n'
printf ' PREFIX The prefix to install to. Default is "/usr/local".\n'
printf ' If PREFIX is "/usr", install path will be "/usr/bin".\n'
printf ' ***WARNING***: Locales ignore the prefix because they *must* be\n'
printf ' installed at a fixed location to work at all. If you do not\n'
printf ' want that to happen, you must disable locales (NLS) completely.\n'
printf ' BINDIR The directory to install binaries in. Default is "$PREFIX/bin".\n'
printf ' INCLUDEDIR The directory to install header files in. Default is\n'
printf ' "$PREFIX/include".\n'
printf ' LIBDIR The directory to install libraries in. Default is\n'
printf ' "$PREFIX/lib".\n'
printf ' DATAROOTDIR The root location for data files. Default is "$PREFIX/share".\n'
printf ' DATADIR The location for data files. Default is "$DATAROOTDIR".\n'
printf ' MANDIR The location to install manpages to. Default is "$DATADIR/man".\n'
printf ' MAN1DIR The location to install Section 1 manpages to. Default is\n'
printf ' "$MANDIR/man1".\n'
printf ' MAN3DIR The location to install Section 3 manpages to. Default is\n'
printf ' "$MANDIR/man3".\n'
printf ' NLSPATH The location to install locale catalogs to. Must be an absolute\n'
printf ' path (or contain one). This is treated the same as the POSIX\n'
printf ' definition of $NLSPATH (see POSIX environment variables for\n'
printf ' more information). Default is "/usr/share/locale/%%L/%%N".\n'
printf ' PC_PATH The location to install pkg-config files to. Must be a\n'
printf ' path or contain one. Default is the first path given by the\n'
printf ' output of `pkg-config --variable=pc_path pkg-config`.\n'
printf ' EXECSUFFIX The suffix to append to the executable names, used to not\n'
printf ' interfere with other installed bc executables. Default is "".\n'
printf ' EXECPREFIX The prefix to prepend to the executable names, used to not\n'
printf ' interfere with other installed bc executables. Default is "".\n'
printf ' DESTDIR For package creation. Default is "". If it is empty when\n'
printf ' `%s` is run, it can also be passed to `make install`\n' "$script"
printf ' later as an environment variable. If both are specified,\n'
printf ' the one given to `%s` takes precedence.\n' "$script"
printf ' LONG_BIT The number of bits in a C `long` type. This is mostly for the\n'
printf ' embedded space since this `bc` uses `long`s internally for\n'
printf ' overflow checking. In C99, a `long` is required to be 32 bits.\n'
printf ' For most normal desktop systems, setting this is unnecessary,\n'
printf ' except that 32-bit platforms with 64-bit longs may want to set\n'
printf ' it to `32`. Default is the default of `LONG_BIT` for the target\n'
printf ' platform. Minimum allowed is `32`. It is a build time error if\n'
printf ' the specified value of `LONG_BIT` is greater than the default\n'
printf ' value of `LONG_BIT` for the target platform.\n'
printf ' GEN_HOST Whether to use `gen/strgen.c`, instead of `gen/strgen.sh`, to\n'
printf ' produce the C files that contain the help texts as well as the\n'
printf ' math libraries. By default, `gen/strgen.c` is used, compiled by\n'
printf ' "$HOSTCC" and run on the host machine. Using `gen/strgen.sh`\n'
printf ' removes the need to compile and run an executable on the host\n'
printf ' machine since `gen/strgen.sh` is a POSIX shell script. However,\n'
printf ' `gen/lib2.bc` is over 4095 characters, the max supported length\n'
printf ' of a string literal in C99, and `gen/strgen.sh` generates a\n'
printf ' string literal instead of an array, as `gen/strgen.c` does. For\n'
printf ' most production-ready compilers, this limit probably is not\n'
printf ' enforced, but it could be. Both options are still available for\n'
printf ' this reason. If you are sure your compiler does not have the\n'
printf ' limit and do not want to compile and run a binary on the host\n'
printf ' machine, set this variable to "0". Any other value, or a\n'
printf ' non-existent value, will cause the build system to compile and\n'
printf ' run `gen/strgen.c`. Default is "".\n'
printf ' GEN_EMU Emulator to run string generator code under (leave empty if not\n'
printf ' necessary). This is not necessary when using `gen/strgen.sh`.\n'
printf ' Default is "".\n'
printf '\n'
printf 'WARNING: even though `configure.sh` supports both option types, short and\n'
printf 'long, it does not support handling both at the same time. Use only one type.\n'
printf '\n'
printf 'Settings\n'
printf '========\n'
printf '\n'
printf 'bc and dc have some settings that, while they cannot be removed by build time\n'
printf 'options, can have their defaults changed at build time by packagers. Users are\n'
printf 'also able to change each setting with environment variables.\n'
printf '\n'
printf 'The following is a table of settings, along with their default values and the\n'
printf 'environment variables users can use to change them. (For the defaults, non-zero\n'
printf 'means on, and zero means off.)\n'
printf '\n'
printf '| Setting | Description | Default | Env Variable |\n'
printf '| =============== | ==================== | ============ | ==================== |\n'
printf '| bc.banner | Whether to display | 0 | BC_BANNER |\n'
printf '| | the bc version | | |\n'
printf '| | banner when in | | |\n'
printf '| | interactive mode. | | |\n'
printf '| --------------- | -------------------- | ------------ | -------------------- |\n'
printf '| bc.sigint_reset | Whether SIGINT will | 1 | BC_SIGINT_RESET |\n'
printf '| | reset bc, instead of | | |\n'
printf '| | exiting, when in | | |\n'
printf '| | interactive mode. | | |\n'
printf '| --------------- | -------------------- | ------------ | -------------------- |\n'
printf '| dc.sigint_reset | Whether SIGINT will | 1 | DC_SIGINT_RESET |\n'
printf '| | reset dc, instead of | | |\n'
printf '| | exiting, when in | | |\n'
printf '| | interactive mode. | | |\n'
printf '| --------------- | -------------------- | ------------ | -------------------- |\n'
printf '| bc.tty_mode | Whether TTY mode for | 1 | BC_TTY_MODE |\n'
printf '| | bc should be on when | | |\n'
printf '| | available. | | |\n'
printf '| --------------- | -------------------- | ------------ | -------------------- |\n'
printf '| dc.tty_mode | Whether TTY mode for | 0 | BC_TTY_MODE |\n'
printf '| | dc should be on when | | |\n'
printf '| | available. | | |\n'
printf '| --------------- | -------------------- | ------------ | -------------------- |\n'
printf '| bc.prompt | Whether the prompt | $BC_TTY_MODE | BC_PROMPT |\n'
printf '| | for bc should be on | | |\n'
printf '| | in tty mode. | | |\n'
printf '| --------------- | -------------------- | ------------ | -------------------- |\n'
printf '| dc.prompt | Whether the prompt | $DC_TTY_MODE | DC_PROMPT |\n'
printf '| | for dc should be on | | |\n'
printf '| | in tty mode. | | |\n'
printf '| --------------- | -------------------- | ------------ | -------------------- |\n'
printf '| bc.expr_exit | Whether to exit bc | 1 | BC_EXPR_EXIT |\n'
printf '| | if an expression or | | |\n'
printf '| | expression file is | | |\n'
printf '| | given with the -e or | | |\n'
printf '| | -f options. | | |\n'
printf '| --------------- | -------------------- | ------------ | -------------------- |\n'
printf '| dc.expr_exit | Whether to exit dc | 1 | DC_EXPR_EXIT |\n'
printf '| | if an expression or | | |\n'
printf '| | expression file is | | |\n'
printf '| | given with the -e or | | |\n'
printf '| | -f options. | | |\n'
printf '| --------------- | -------------------- | ------------ | -------------------- |\n'
printf '| bc.digit_clamp | Whether to have bc | 0 | BC_DIGIT_CLAMP |\n'
printf '| | clamp digits that | | |\n'
printf '| | are greater than or | | |\n'
printf '| | equal to the current | | |\n'
printf '| | ibase when parsing | | |\n'
printf '| | numbers. | | |\n'
printf '| --------------- | -------------------- | ------------ | -------------------- |\n'
printf '| dc.digit_clamp | Whether to have dc | 0 | DC_DIGIT_CLAMP |\n'
printf '| | clamp digits that | | |\n'
printf '| | are greater than or | | |\n'
printf '| | equal to the current | | |\n'
printf '| | ibase when parsing | | |\n'
printf '| | numbers. | | |\n'
printf '| --------------- | -------------------- | ------------ | -------------------- |\n'
printf '\n'
printf 'These settings are not meant to be changed on a whim. They are meant to ensure\n'
printf 'that this bc and dc will conform to the expectations of the user on each\n'
printf 'platform.\n'
exit "$_usage_val"
}
# Replaces a file extension in a filename. This is used mostly to turn filenames
# like `src/num.c` into `src/num.o`. In other words, it helps to link targets to
# the files they depend on.
#
# @param file The filename.
# @param ext1 The extension to replace.
# @param ext2 The new extension.
replace_ext() {
if [ "$#" -ne 3 ]; then
err_exit "Invalid number of args to $0"
fi
_replace_ext_file="$1"
_replace_ext_ext1="$2"
_replace_ext_ext2="$3"
_replace_ext_result="${_replace_ext_file%.$_replace_ext_ext1}.$_replace_ext_ext2"
printf '%s\n' "$_replace_ext_result"
}
# Replaces a file extension in every filename given in a list. The list is just
# a space-separated list of words, so filenames are expected to *not* have
# spaces in them. See the documentation for `replace_ext()`.
#
# @param files The list of space-separated filenames to replace extensions for.
# @param ext1 The extension to replace.
# @param ext2 The new extension.
replace_exts() {
if [ "$#" -ne 3 ]; then
err_exit "Invalid number of args to $0"
fi
_replace_exts_files="$1"
_replace_exts_ext1="$2"
_replace_exts_ext2="$3"
for _replace_exts_file in $_replace_exts_files; do
_replace_exts_new_name=$(replace_ext "$_replace_exts_file" "$_replace_exts_ext1" "$_replace_exts_ext2")
_replace_exts_result="$_replace_exts_result $_replace_exts_new_name"
done
printf '%s\n' "$_replace_exts_result"
}
# Finds a placeholder in @a str and replaces it. This is the workhorse of
# configure.sh. It's what replaces placeholders in Makefile.in with the data
# needed for the chosen build. Below, you will see a lot of calls to this
# function.
#
# Note that needle can never contain an exclamation point. For more information,
# see substring_replace() in scripts/functions.sh.
#
# @param str The string to find and replace placeholders in.
# @param needle The placeholder name.
# @param replacement The string to use to replace the placeholder.
replace() {
if [ "$#" -ne 3 ]; then
err_exit "Invalid number of args to $0"
fi
_replace_str="$1"
_replace_needle="$2"
_replace_replacement="$3"
substring_replace "$_replace_str" "%%$_replace_needle%%" "$_replace_replacement"
}
# This function finds all the source files that need to be built. If there is
# only one argument and it is empty, then all source files are built. Otherwise,
# the arguments are all assumed to be source files that should *not* be built.
find_src_files() {
_find_src_files_args=""
if [ "$#" -ge 1 ] && [ "$1" != "" ]; then
while [ "$#" -ge 1 ]; do
_find_src_files_a="${1## }"
shift
_find_src_files_args=$(printf '%s\n%s/src/%s\n' "$_find_src_files_args" "$scriptdir" "${_find_src_files_a}")
done
fi
_find_src_files_files=$(find "$scriptdir/src" -depth -name "*.c" -print | LC_ALL=C sort)
_find_src_files_result=""
for _find_src_files_f in $_find_src_files_files; do
# If this is true, the file is part of args, and therefore, unneeded.
if [ "${_find_src_files_args##*$_find_src_files_f}" != "${_find_src_files_args}" ]; then
continue
fi
_find_src_files_result=$(printf '%s\n%s\n' "$_find_src_files_result" "$_find_src_files_f")
done
printf '%s\n' "$_find_src_files_result"
}
# This function generates a list of files to go into the Makefile. It generates
# the list of object files.
#
# @param contents The contents of the Makefile template to put the list of
# files into.
gen_file_list() {
if [ "$#" -lt 1 ]; then
err_exit "Invalid number of args to $0"
fi
_gen_file_list_contents="$1"
shift
if [ "$#" -ge 1 ]; then
_gen_file_list_unneeded="$@"
else
_gen_file_list_unneeded=""
fi
_gen_file_list_needle_src="SRC"
_gen_file_list_needle_obj="OBJ"
_gen_file_list_replacement=$(find_src_files $_gen_file_list_unneeded | tr '\n' ' ')
_gen_file_list_contents=$(replace "$_gen_file_list_contents" \
"$_gen_file_list_needle_src" "$_gen_file_list_replacement")
_gen_file_list_cbases=""
for _gen_file_list_f in $_gen_file_list_replacement; do
_gen_file_list_b=$(basename "$_gen_file_list_f")
_gen_file_list_cbases="$_gen_file_list_cbases src/$_gen_file_list_b"
done
_gen_file_list_replacement=$(replace_exts "$_gen_file_list_cbases" "c" "o")
_gen_file_list_contents=$(replace "$_gen_file_list_contents" \
"$_gen_file_list_needle_obj" "$_gen_file_list_replacement")
printf '%s\n' "$_gen_file_list_contents"
}
set_default() {
_set_default_on="$1"
shift
_set_default_name="$1"
shift
# The reason that the variables that are being set do not have the same
# non-collision avoidance that the other variables do is that we *do* want
# the settings of these variables to leak out of the function. They adjust
# the settings outside of the function.
case "$_set_default_name" in
bc.banner) bc_default_banner="$_set_default_on" ;;
bc.sigint_reset) bc_default_sigint_reset="$_set_default_on" ;;
dc.sigint_reset) dc_default_sigint_reset="$_set_default_on" ;;
bc.tty_mode) bc_default_tty_mode="$_set_default_on" ;;
dc.tty_mode) dc_default_tty_mode="$_set_default_on" ;;
bc.prompt) bc_default_prompt="$_set_default_on" ;;
dc.prompt) dc_default_prompt="$_set_default_on" ;;
bc.expr_exit) bc_default_expr_exit="$_set_default_on";;
dc.expr_exit) dc_default_expr_exit="$_set_default_on";;
bc.digit_clamp) bc_default_digit_clamp="$_set_default_on";;
dc.digit_clamp) dc_default_digit_clamp="$_set_default_on";;
?) usage "Invalid setting: $_set_default_name" ;;
esac
}
predefined_build() {
_predefined_build_type="$1"
shift
# The reason that the variables that are being set do not have the same
# non-collision avoidance that the other variables do is that we *do* want
# the settings of these variables to leak out of the function. They adjust
# the settings outside of the function.
case "$_predefined_build_type" in
BSD)
bc_only=0
dc_only=0
debug=0
optimization="3"
hist=1
hist_impl="editline"
extra_math=1
generate_tests=$generate_tests
install_manpages=0
nls=1
force=0
strip_bin=1
all_locales=0
library=0
clean=1
bc_default_banner=0
bc_default_sigint_reset=1
dc_default_sigint_reset=1
bc_default_tty_mode=1
dc_default_tty_mode=0
bc_default_prompt=""
dc_default_prompt=""
bc_default_expr_exit=1
dc_default_expr_exit=1
bc_default_digit_clamp=0
dc_default_digit_clamp=0;;
GNU)
bc_only=0
dc_only=0
debug=0
optimization="3"
hist=1
hist_impl="internal"
extra_math=1
generate_tests=$generate_tests
install_manpages=1
nls=1
force=0
strip_bin=1
all_locales=0
library=0
clean=1
bc_default_banner=1
bc_default_sigint_reset=1
dc_default_sigint_reset=0
bc_default_tty_mode=1
dc_default_tty_mode=0
bc_default_prompt=""
dc_default_prompt=""
bc_default_expr_exit=1
dc_default_expr_exit=1
bc_default_digit_clamp=1
dc_default_digit_clamp=0;;
GDH)
CFLAGS="-Weverything -Wno-padded -Wno-unsafe-buffer-usage -Wno-poison-system-directories"
CFLAGS="$CFLAGS -Wno-unknown-warning-option -Wno-switch-default -Wno-pre-c11-compat"
CFLAGS="$CFLAGS -Werror -pedantic -std=c11"
bc_only=0
dc_only=0
debug=0
optimization="3"
hist=1
hist_impl="internal"
extra_math=1
generate_tests=1
install_manpages=1
nls=0
force=0
strip_bin=1
all_locales=0
library=0
clean=1
bc_default_banner=1
bc_default_sigint_reset=1
dc_default_sigint_reset=1
bc_default_tty_mode=1
dc_default_tty_mode=1
bc_default_prompt=""
dc_default_prompt=""
bc_default_expr_exit=0
dc_default_expr_exit=0
bc_default_digit_clamp=1
dc_default_digit_clamp=1;;
DBG)
CFLAGS="-Weverything -Wno-padded -Wno-unsafe-buffer-usage -Wno-poison-system-directories"
CFLAGS="$CFLAGS -Wno-unknown-warning-option -Wno-switch-default -Wno-pre-c11-compat"
CFLAGS="$CFLAGS -Werror -pedantic -std=c11"
bc_only=0
dc_only=0
debug=1
optimization="0"
hist=1
hist_impl="internal"
extra_math=1
generate_tests=1
install_manpages=1
nls=1
force=0
strip_bin=1
all_locales=0
library=0
clean=1
bc_default_banner=1
bc_default_sigint_reset=1
dc_default_sigint_reset=1
bc_default_tty_mode=1
dc_default_tty_mode=1
bc_default_prompt=""
dc_default_prompt=""
bc_default_expr_exit=0
dc_default_expr_exit=0
bc_default_digit_clamp=1
dc_default_digit_clamp=1;;
?|'') usage "Invalid user build: \"$_predefined_build_type\". Accepted types are BSD, GNU, GDH, DBG.";;
esac
}
# This is a list of defaults, but it is also the list of possible options for
# users to change.
#
# The development options are: force (force options even if they fail).
bc_only=0
dc_only=0
karatsuba_len=32
debug=0
hist=1
hist_impl="internal"
extra_math=1
optimization=""
generate_tests=1
install_manpages=1
nls=1
force=0
strip_bin=1
all_locales=0
library=0
clean=1
problematic_tests=1
# The empty strings are because they depend on TTY mode. If they are directly
# set, though, they will be integers. We test for empty strings later.
bc_default_banner=0
bc_default_sigint_reset=1
dc_default_sigint_reset=1
bc_default_tty_mode=1
dc_default_tty_mode=0
bc_default_prompt=""
dc_default_prompt=""
bc_default_expr_exit=1
dc_default_expr_exit=1
bc_default_digit_clamp=0
dc_default_digit_clamp=0
# getopts is a POSIX utility, but it cannot handle long options. Thus, the
# handling of long options is done by hand, and that's the reason that short and
# long options cannot be mixed.
while getopts "abBcdDeEfgGhHik:lMNO:p:PrS:s:T-" opt; do
case "$opt" in
a) library=1 ;;
b) bc_only=1 ;;
B) dc_only=1 ;;
C) clean=0 ;;
d) dc_only=1 ;;
D) bc_only=1 ;;
e) hist_impl="editline" ;;
E) extra_math=0 ;;
f) force=1 ;;
g) debug=1 ;;
G) generate_tests=0 ;;
h) usage ;;
H) hist=0 ;;
i) hist_impl="internal" ;;
k) karatsuba_len="$OPTARG" ;;
l) all_locales=1 ;;
M) install_manpages=0 ;;
N) nls=0 ;;
O) optimization="$OPTARG" ;;
p) predefined_build "$OPTARG" ;;
P) problematic_tests=0 ;;
r) hist_impl="readline" ;;
S) set_default 0 "$OPTARG" ;;
s) set_default 1 "$OPTARG" ;;
T) strip_bin=0 ;;
-)
arg="$1"
arg="${arg#--}"
LONG_OPTARG="${arg#*=}"
case $arg in
help) usage ;;
library) library=1 ;;
bc-only) bc_only=1 ;;
dc-only) dc_only=1 ;;
debug) debug=1 ;;
force) force=1 ;;
prefix=?*) PREFIX="$LONG_OPTARG" ;;
prefix)
if [ "$#" -lt 2 ]; then
usage "No argument given for '--$arg' option"
fi
PREFIX="$2"
shift ;;
bindir=?*) BINDIR="$LONG_OPTARG" ;;
bindir)
if [ "$#" -lt 2 ]; then
usage "No argument given for '--$arg' option"
fi
BINDIR="$2"
shift ;;
includedir=?*) INCLUDEDIR="$LONG_OPTARG" ;;
includedir)
if [ "$#" -lt 2 ]; then
usage "No argument given for '--$arg' option"
fi
INCLUDEDIR="$2"
shift ;;
libdir=?*) LIBDIR="$LONG_OPTARG" ;;
libdir)
if [ "$#" -lt 2 ]; then
usage "No argument given for '--$arg' option"
fi
LIBDIR="$2"
shift ;;
datarootdir=?*) DATAROOTDIR="$LONG_OPTARG" ;;
datarootdir)
if [ "$#" -lt 2 ]; then
usage "No argument given for '--$arg' option"
fi
DATAROOTDIR="$2"
shift ;;
datadir=?*) DATADIR="$LONG_OPTARG" ;;
datadir)
if [ "$#" -lt 2 ]; then
usage "No argument given for '--$arg' option"
fi
DATADIR="$2"
shift ;;
mandir=?*) MANDIR="$LONG_OPTARG" ;;
mandir)
if [ "$#" -lt 2 ]; then
usage "No argument given for '--$arg' option"
fi
MANDIR="$2"
shift ;;
man1dir=?*) MAN1DIR="$LONG_OPTARG" ;;
man1dir)
if [ "$#" -lt 2 ]; then
usage "No argument given for '--$arg' option"
fi
MAN1DIR="$2"
shift ;;
man3dir=?*) MAN3DIR="$LONG_OPTARG" ;;
man3dir)
if [ "$#" -lt 2 ]; then
usage "No argument given for '--$arg' option"
fi
MAN3DIR="$2"
shift ;;
karatsuba-len=?*) karatsuba_len="$LONG_OPTARG" ;;
karatsuba-len)
if [ "$#" -lt 2 ]; then
usage "No argument given for '--$arg' option"
fi
karatsuba_len="$1"
shift ;;
opt=?*) optimization="$LONG_OPTARG" ;;
opt)
if [ "$#" -lt 2 ]; then
usage "No argument given for '--$arg' option"
fi
optimization="$1"
shift ;;
set-default-on=?*) set_default 1 "$LONG_OPTARG" ;;
set-default-on)
if [ "$#" -lt 2 ]; then
usage "No argument given for '--$arg' option"
fi
set_default 1 "$1"
shift ;;
set-default-off=?*) set_default 0 "$LONG_OPTARG" ;;
set-default-off)
if [ "$#" -lt 2 ]; then
usage "No argument given for '--$arg' option"
fi
set_default 0 "$1"
shift ;;
predefined-build-type=?*) predefined_build "$LONG_OPTARG" ;;
predefined-build-type)
if [ "$#" -lt 2 ]; then
usage "No argument given for '--$arg' option"
fi
predefined_build "$1"
shift ;;
disable-bc) dc_only=1 ;;
disable-dc) bc_only=1 ;;
disable-clean) clean=0 ;;
disable-extra-math) extra_math=0 ;;
disable-generated-tests) generate_tests=0 ;;
disable-history) hist=0 ;;
disable-man-pages) install_manpages=0 ;;
disable-nls) nls=0 ;;
disable-strip) strip_bin=0 ;;
disable-problematic-tests) problematic_tests=0 ;;
enable-editline) hist_impl="editline" ;;
enable-readline) hist_impl="readline" ;;
enable-internal-history) hist_impl="internal" ;;
install-all-locales) all_locales=1 ;;
help* | bc-only* | dc-only* | debug*)
usage "No arg allowed for --$arg option" ;;
disable-bc* | disable-dc* | disable-clean*)
usage "No arg allowed for --$arg option" ;;
disable-extra-math*)
usage "No arg allowed for --$arg option" ;;
disable-history*)
usage "No arg allowed for --$arg option" ;;
disable-man-pages* | disable-nls* | disable-strip*)
usage "No arg allowed for --$arg option" ;;
disable-problematic-tests*)
usage "No arg allowed for --$arg option" ;;
install-all-locales*)
usage "No arg allowed for --$arg option" ;;
enable-editline* | enable-readline*)
usage "No arg allowed for --$arg option" ;;
enable-internal-history*)
usage "No arg allowed for --$arg option" ;;
'') break ;; # "--" terminates argument processing
* ) usage "Invalid option $LONG_OPTARG" ;;
esac
shift
OPTIND=1 ;;
?) usage "Invalid option: $opt" ;;
esac
done
# Sometimes, developers don't want configure.sh to do a config clean. But
# sometimes they do.
if [ "$clean" -ne 0 ]; then
if [ -f ./Makefile ]; then
make clean_config > /dev/null
fi
fi
# It is an error to say that bc only should be built and likewise for dc.
if [ "$bc_only" -eq 1 ] && [ "$dc_only" -eq 1 ]; then
usage "Can only specify one of -b(-D) or -d(-B)"
fi
# The library is mutually exclusive to the calculators, so it's an error to
# give an option for either of them.
if [ "$library" -ne 0 ]; then
if [ "$bc_only" -eq 1 ] || [ "$dc_only" -eq 1 ]; then
usage "Must not specify -b(-D) or -d(-B) when building the library"
fi
fi
# KARATSUBA_LEN must be an integer and must be 16 or greater.
case $karatsuba_len in
(*[!0-9]*|'') usage "KARATSUBA_LEN is not a number" ;;
(*) ;;
esac
if [ "$karatsuba_len" -lt 16 ]; then
usage "KARATSUBA_LEN is less than 16"
fi
set -e
if [ -z "${LONG_BIT+set}" ]; then
LONG_BIT_DEFINE=""
elif [ "$LONG_BIT" -lt 32 ]; then
usage "LONG_BIT is less than 32"
else
LONG_BIT_DEFINE="-DBC_LONG_BIT=$LONG_BIT"
fi
if [ -z "$CC" ]; then
CC="c99"
else
# I had users complain that, if they gave CFLAGS as part of CC, which
# autotools allows in its braindead way, the build would fail with an error.
# I don't like adjusting for autotools, but oh well. These lines puts the
# stuff after the first space into CFLAGS.
ccbase=$(basename "$CC")
suffix=" *"
prefix="* "
if [ "${ccbase%%$suffix}" != "$ccbase" ]; then
ccflags="${ccbase#$prefix}"
cc="${ccbase%%$suffix}"
ccdir=$(dirname "$CC")
if [ "$ccdir" = "." ] && [ "${CC#.}" = "$CC" ]; then
ccdir=""
else
ccdir="$ccdir/"
fi
CC="${ccdir}${cc}"
CFLAGS="$CFLAGS $ccflags"
fi
fi
if [ -z "$HOSTCC" ] && [ -z "$HOST_CC" ]; then
HOSTCC="$CC"
elif [ -z "$HOSTCC" ]; then
HOSTCC="$HOST_CC"
fi
if [ "$HOSTCC" != "$CC" ]; then
# Like above, this splits HOSTCC and HOSTCFLAGS.
ccbase=$(basename "$HOSTCC")
suffix=" *"
prefix="* "
if [ "${ccbase%%$suffix}" != "$ccbase" ]; then
ccflags="${ccbase#$prefix}"
cc="${ccbase%%$suffix}"
ccdir=$(dirname "$HOSTCC")
if [ "$ccdir" = "." ] && [ "${HOSTCC#.}" = "$HOSTCC" ]; then
ccdir=""
else
ccdir="$ccdir/"
fi
HOSTCC="${ccdir}${cc}"
HOSTCFLAGS="$HOSTCFLAGS $ccflags"
fi
fi
if [ -z "${HOSTCFLAGS+set}" ] && [ -z "${HOST_CFLAGS+set}" ]; then
HOSTCFLAGS="$CFLAGS"
elif [ -z "${HOSTCFLAGS+set}" ]; then
HOSTCFLAGS="$HOST_CFLAGS"
fi
# Store these for the cross compilation detection later.
OLDCFLAGS="$CFLAGS"
OLDHOSTCFLAGS="$HOSTCFLAGS"
link="@printf 'No link necessary\\\\n'"
main_exec="BC"
executable="BC_EXEC"