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libclayer/configure.ac

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############################
# Specify program versions #
############################
AC_PREREQ([2.70])
LT_PREREQ([2.4.6])
##################################
# Initialize Autoconf & Automake #
##################################
AC_INIT([libclayer],
m4_normalize(m4_include([VERSION])),
[https://github.com/tailix/libclayer/issues],
[libclayer],
[https://github.com/tailix/libclayer])
AC_CANONICAL_BUILD
AC_CANONICAL_HOST
AC_CONFIG_MACRO_DIRS([m4])
AC_CONFIG_HEADERS([config.h])
AC_CONFIG_SRCDIR([src/libclayer.c])
AC_CONFIG_FILES([
Makefile
libclayer.pc
include/Makefile
tests/Makefile
])
AM_INIT_AUTOMAKE([1.16 subdir-objects])
AC_SUBST([PACKAGE_DESCR], ['libc for both hosted and freestanding environments'])
###############
# Define args #
###############
dnl Features (enabled by default)
AC_ARG_ENABLE([float], AS_HELP_STRING([--disable-float], [disable floating-point arithmetic]))
AC_ARG_ENABLE([libclayer], AS_HELP_STRING([--disable-libclayer], [install as libclayer]))
AC_ARG_ENABLE([werror], AS_HELP_STRING([--disable-werror], [disable -Werror]))
dnl Features (disabled by default)
AC_ARG_ENABLE([freestanding], AS_HELP_STRING([--enable-freestanding], [build for freestanding environment]))
AC_ARG_ENABLE([checks], AS_HELP_STRING([--enable-checks], [enable usual tests]))
AC_ARG_ENABLE([checks-all], AS_HELP_STRING([--enable-checks-all], [enable all checks]))
AC_ARG_ENABLE([checks-cppcheck], AS_HELP_STRING([--enable-checks-cppcheck], [enable cppcheck]))
AC_ARG_ENABLE([libc], AS_HELP_STRING([--enable-libc], [install as libc]))
dnl Features (with parameter)
AC_ARG_ENABLE([pkg-config], AS_HELP_STRING([--enable-pkg-config@<:@=PATH@:>@], [install pkg-config files @<:@PATH='${libdir}/pkgconfig'@:>@]))
################
# Default args #
################
AC_DEFUN([do_enable_checks_all],
[
if test -z "$enable_checks"; then enable_checks=yes; fi
if test -z "$enable_checks_cppcheck"; then enable_checks_cppcheck=yes; fi
])
AS_IF([test "$enable_checks_all" = yes], do_enable_checks_all)
##################
# Normalize args #
##################
dnl Features (enabled by default)
AS_IF([test "$enable_float" = no ], [enable_float=no], [enable_float=yes])
AS_IF([test "$enable_libclayer" = no ], [enable_libclayer=no], [enable_libclayer=yes])
AS_IF([test "$enable_werror" = no ], [enable_werror=no], [enable_werror=yes])
dnl Features (disabled by default)
AS_IF([test "$enable_freestanding" = yes], [enable_freestanding=yes], [enable_freestanding=no])
AS_IF([test "$enable_checks" = yes], [enable_checks=yes], [enable_checks=no])
AS_IF([test "$enable_checks_all" = yes], [enable_checks_all=yes], [enable_checks_all=no])
AS_IF([test "$enable_checks_cppcheck" = yes], [enable_checks_cppcheck=yes], [enable_checks_cppcheck=no])
AS_IF([test "$enable_libc" = yes], [enable_libc=yes], [enable_libc=no])
dnl Features (with parameter)
AS_IF([test "$enable_pkg_config" = yes], [enable_pkg_config='${libdir}/pkgconfig'])
AS_IF([test "$enable_pkg_config" = no ], [enable_pkg_config=''])
#############
# Test args #
#############
AS_IF([test "$enable_checks" = yes -a "$enable_freestanding" = yes], AC_MSG_ERROR([can not build freestanding tests]))
#########################
# Automake conditionals #
#########################
dnl Architecture
AM_CONDITIONAL([ASM_I386], [test "$host_cpu" = i386])
AM_CONDITIONAL([ASM_RISCV64], [test "$host_cpu" = riscv64])
AM_CONDITIONAL([ASM_X86_64], [test "$host_cpu" = x86_64])
dnl Architecture (additional)
AM_CONDITIONAL([ASM_X86], [test "$host_cpu" = i386 -o "$host_cpu" = x86_64])
dnl Features (enabled by default)
AM_CONDITIONAL([ENABLE_FLOAT], [test "$enable_float" = yes])
AM_CONDITIONAL([ENABLE_LIBCLAYER], [test "$enable_libclayer" = yes])
AM_CONDITIONAL([ENABLE_WERROR], [test "$enable_werror" = yes])
dnl Features (disabled by default)
AM_CONDITIONAL([ENABLE_FREESTANDING], [test "$enable_freestanding" = yes])
AM_CONDITIONAL([ENABLE_CHECKS], [test "$enable_checks" = yes])
AM_CONDITIONAL([ENABLE_CHECKS_CPPCHECK], [test "$enable_checks_cppcheck" = yes])
AM_CONDITIONAL([ENABLE_LIBC], [test "$enable_libc" = yes])
dnl Features (with parameter)
AM_CONDITIONAL([ENABLE_PKG_CONFIG], [test ! -z "$enable_pkg_config"])
####################
# Autoconf defines #
####################
dnl Architecture
AS_IF([test "$host_cpu" = i386], [AC_DEFINE([ASM_I386], [1], [architecture is i386])])
AS_IF([test "$host_cpu" = riscv64], [AC_DEFINE([ASM_RISCV64], [1], [architecture is RISC-V 64-bit])])
AS_IF([test "$host_cpu" = x86_64], [AC_DEFINE([ASM_X86_64], [1], [architecture is x86_64])])
dnl Architecture (additional)
AS_IF([test "$host_cpu" = i386], [AC_DEFINE([ASM_X86], [1], [architecture is x86])])
AS_IF([test "$host_cpu" = x86_64], [AC_DEFINE([ASM_X86], [1], [architecture is x86])])
dnl Features (enabled by default)
AS_IF([test "$enable_float" = yes], [AC_DEFINE([ENABLE_FLOAT], [1], [enabled floating-point arithmetic])])
AS_IF([test "$enable_libclayer" = yes], [AC_DEFINE([ENABLE_LIBCLAYER], [1], [install as libclayer])])
AS_IF([test "$enable_werror" = yes], [AC_DEFINE([ENABLE_WERROR], [1], [enabled -Werror])])
dnl Features (disabled by default)
AS_IF([test "$enable_freestanding" = yes], [AC_DEFINE([ENABLE_FREESTANDING], [1], [build for freestanding environment])])
AS_IF([test "$enable_checks" = yes], [AC_DEFINE([ENABLE_CHECKS], [1], [enabled usual tests])])
AS_IF([test "$enable_checks_cppcheck" = yes], [AC_DEFINE([ENABLE_CHECKS_CPPCHECK], [1], [enabled cppcheck])])
AS_IF([test "$enable_libc" = yes], [AC_DEFINE([ENABLE_LIBC], [1], [install as libc])])
##########################
# Autoconf substitutions #
##########################
dnl Features (with parameter)
AC_SUBST([pkgconfdir], [$enable_pkg_config])
###################
# Set build flags #
###################
AS_IF([test "$enable_freestanding" = yes],
[CFLAGS="$CFLAGS -nostdlib -ffreestanding -fno-pic -fno-stack-protector "],
[CFLAGS="$CFLAGS -fpic "])
##############
# Run checks #
##############
AC_LANG([C])
AM_PROG_AS
AC_C_INLINE
AC_HEADER_STDBOOL
AS_IF([test "$enable_checks" = yes -a "$ac_cv_header_stdbool_h" != yes],
[AC_MSG_ERROR([the header is required])])
AC_CHECK_HEADERS([limits.h stdarg.h stddef.h stdint.h],,
[AC_MSG_ERROR([the headers are required])])
AS_IF([test "$enable_checks" = yes],
[AC_CHECK_HEADERS([assert.h setjmp.h stdio.h stdlib.h string.h],,
[AC_MSG_ERROR([the headers are required])])])
AC_PATH_PROGS([CPPCHECK], [cppcheck], [:])
AS_IF([test "$enable_checks_cppcheck" = yes -a "$CPPCHECK" = ':'],
[AC_MSG_ERROR([cppcheck is required])])
######################
# Initialize Libtool #
######################
LT_INIT
##########
# Finish #
##########
AC_OUTPUT
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