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# Process this file with autoconf to produce a configure script.
#
# Copyright (C) 2013, 2017, 2019, 2021 P. J. McDermott
#
# This file is part of @
#
# @ is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# @ 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 @. If not, see <http://www.gnu.org/licenses/>.
AC_INIT([@], [0.1.0], [mailto:pj@pehjota.net], [atsign])
AC_CONFIG_AUX_DIR([build-aux])
AC_CONFIG_MACRO_DIR([m4])
AC_CONFIG_SRCDIR([src/main.c])
AM_INIT_AUTOMAKE([gnu check-news dist-bzip2 dist-xz subdir-objects])
AM_SILENT_RULES([yes])
AM_CONDITIONAL([IN_GIT],
[test -d "${srcdir}/.git" && command -v git >/dev/null 2>&1])
AM_CONDITIONAL([OUT_OF_TREE], [test x"${srcdir}" != x'.' ])
save_CFLAGS="${CFLAGS-}"
AC_PROG_CC()
AM_PROG_CC_C_O()
test -d "${srcdir}/.git" || CFLAGS="${save_CFLAGS}"
funcs_missing=false
AC_CHECK_FUNCS(
[\
calloc fprintf fputs free localtime mktime printf setvbuf \
sleep strerror strlen strptime time
],
[],
[funcs_missing=true])
if ${funcs_missing}; then
AC_MSG_ERROR([required functions are missing])
fi
AX_CFLAGS_WARN_ALL() dnl Adds -Wall or equivalent
AX_CHECK_COMPILE_FLAG([-Wpedantic], [AX_APPEND_FLAG([-Wpedantic])])
AX_CHECK_COMPILE_FLAG([-Wextra], [AX_APPEND_FLAG([-Wextra])])
AC_ARG_ENABLE([gcc-warnings],
[AS_HELP_STRING([--enable-gcc-warnings], [turn on many GCC warnings])],
[case "${enableval}" in yes|no) gcc_warnings=${enableval};;
*) AC_MSG_ERROR(
[bad value ${enableval} for gcc-warnings option]);;
esac],
[
gcc_warnings=no
test -d "${srcdir}/.git" && gcc_warnings=yes
]
)
if test "x${gcc_warnings}" = 'xyes'; then
nowarns=''
nowarns="${nowarns} -Wsystem-headers"
gl_MANYWARN_ALL_GCC([warns])
gl_MANYWARN_COMPLEMENT([warns], [${warns}], [${nowarns}])
for warn in ${warns}; do
gl_WARN_ADD([${warn}])
done
AC_SUBST([WARN_CFLAGS])
fi
AX_CHECK_COMPILE_FLAG([-fdiagnostics-color=auto],
[AX_APPEND_FLAG([-fdiagnostics-color=auto])])
AC_ARG_ENABLE([address-sanitization],
[AS_HELP_STRING([--enable-address-sanitization],
[turn on AddressSanitizer (if available)])],
[case "${enableval}" in yes|no) address_sanitization=${enableval};;
*) AC_MSG_ERROR(
[bad value ${enableval} for address-sanitization option]
);;
esac],
[
address_sanitization=no
gl_GCC_VERSION_IFELSE([4], [8],
[test -d "${srcdir}/.git" && address_sanitization=yes])
]
)
if test "x${address_sanitization}" = 'xyes'; then
AX_CHECK_COMPILE_FLAG([-fsanitize=address],
[AX_APPEND_FLAG([-fsanitize=address], [ASAN_CFLAGS])])
AX_CHECK_COMPILE_FLAG([-fno-omit-frame-pointer],
[AX_APPEND_FLAG([-fno-omit-frame-pointer], [ASAN_CFLAGS])])
AC_SUBST([ASAN_CFLAGS])
fi
if ! test -d "${srcdir}/.git"; then
AX_CHECK_COMPILE_FLAG([-s], [AX_APPEND_FLAG([-s])])
fi
for flag in -Os -fno-unwind-tables -fno-asynchronous-unwind-tables \
-ffunction-sections -fdata-sections -Wl,--gc-sections \
-fstack-protector-strong -flto \
-Wl,-z,now -Wl,--hash-style=sysv -Wl,--build-id=none; do
AX_CHECK_COMPILE_FLAG([${flag}], [AX_APPEND_FLAG([${flag}])])
done
AC_CONFIG_FILES([Makefile])
AC_CONFIG_HEADERS([config.h])
AC_OUTPUT()
|
