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configure.ac
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configure.ac
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##
## This file is part of the libsigrokdecode project.
##
## Copyright (C) 2010 Bert Vermeulen <[email protected]>
##
## This program 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.
##
## This program 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 program. If not, see <http://www.gnu.org/licenses/>.
##
# We require at least autoconf 2.63 (AC_INIT format changed there).
AC_PREREQ([2.63])
# libsigrokdecode package version number (NOT the same as shared lib version!).
AC_INIT([libsigrokdecode], [0.6.0],
[[email protected]], [libsigrokdecode],
[http://www.sigrok.org])
AC_CONFIG_MACRO_DIR([m4])
AC_CONFIG_AUX_DIR([autostuff])
AC_CONFIG_HEADERS([config.h version.h])
# We require at least automake 1.11 (needed for 'silent rules').
AM_INIT_AUTOMAKE([1.11 -Wall -Werror no-define subdir-objects check-news color-tests])
AM_SILENT_RULES([yes])
m4_ifdef([AM_PROG_AR], [AM_PROG_AR])
AC_CANONICAL_HOST
# Checks for programs.
AC_PROG_CC
AC_PROG_INSTALL
AC_PROG_LN_S
AC_C_CONST
# Required for per-target flags or subdir-objects with C sources.
AM_PROG_CC_C_O
# Support building Windows DLLs.
AC_LIBTOOL_WIN32_DLL
AM_PROG_CC_STDC
AM_PROG_LIBTOOL
# Set the standard the C library headers should conform to.
AH_VERBATIM([_POSIX_C_SOURCE], [/* The targeted POSIX standard. */
#ifndef _POSIX_C_SOURCE
# define _POSIX_C_SOURCE 200112L
#endif])
# Get compiler versions.
SR_PROG_VERSION([$CC], [srd_cc_version])
# Initialize libtool.
LT_INIT
# Set up the libsigrokdecode version defines.
SR_PKG_VERSION_SET([SRD_PACKAGE_VERSION], [AC_PACKAGE_VERSION])
# Library version for libsigrokdecode (NOT the same as the package version).
# Carefully read the libtool docs before updating these numbers!
# The algorithm for determining which number to change (and how) is nontrivial!
# http://www.gnu.org/software/libtool/manual/libtool.html#Updating-version-info
# Format: current:revision:age.
SR_LIB_VERSION_SET([SRD_LIB_VERSION], [4:0:0])
AM_CONDITIONAL([WIN32], [test -z "${host_os##mingw*}" || test -z "${host_os##cygwin*}"])
# Initialize pkg-config.
# We require at least 0.22, as "Requires.private" behaviour changed there.
PKG_PROG_PKG_CONFIG
############################
## Package dependencies ##
############################
# Initialize pkg-config.
# We require at least 0.22, as "Requires.private" behaviour changed there.
PKG_PROG_PKG_CONFIG([0.22])
# Collect the pkg-config module names of all dependencies in SRD_PKGLIBS.
# These are used to derive the compiler flags and for the "Requires.private"
# field in the generated libsigrokdecode.pc file.
SRD_PKGLIBS=
SRD_PKGLIBS_TESTS=
# Keep track of all checked modules so we can list them at the end.
SR_PKG_CHECK_SUMMARY([srd_pkglibs_summary])
# Python 3 is always needed.
# Starting with Python 3.8 we need to check for "python-3.8-embed"
# first, since usually only that variant will add "-lpython3.8".
# https://docs.python.org/3/whatsnew/3.8.html#debug-build-uses-the-same-abi-as-release-build
SR_PKG_CHECK([python3], [SRD_PKGLIBS],
[python-3.12-embed], [python-3.11-embed],
[python-3.10-embed], [python-3.9-embed], [python-3.8-embed], [python3-embed],
[python-3.8 >= 3.8], [python-3.7 >= 3.7], [python-3.6 >= 3.6], [python-3.5 >= 3.5],
[python-3.4 >= 3.4], [python-3.3 >= 3.3], [python-3.2 >= 3.2], [python3 >= 3.2])
AS_IF([test "x$sr_have_python3" = xno],
[AC_MSG_ERROR([Cannot find Python 3 development headers.])])
# We also need to find the name of the python3 executable (for 'make install').
# Some OSes call this python3, some call it python3.2, etc. etc.
AC_ARG_VAR([PYTHON3], [Python 3 interpreter])
AC_CHECK_PROGS([PYTHON3], [python3.8 python3.7 python3.6 python3.5 python3.4 python3.3 python3.2 python3])
AS_IF([test "x$PYTHON3" = x],
[AC_MSG_ERROR([Cannot find Python 3 interpreter.])])
######################
## Feature checks ##
######################
# Keep track of all checked modules so we can list them at the end.
SR_PKG_CHECK_SUMMARY([srd_pkglibs_opt_summary])
# The Check unit testing framework is optional. Disable if not found.
SR_PKG_CHECK([check], [SRD_PKGLIBS_TESTS], [check >= 0.9.4])
AM_CONDITIONAL([HAVE_CHECK], [test "x$sr_have_check" = xyes])
# Enable the C99 standard if possible, and enforce the use
# of SRD_API to explicitly mark all public API functions.
SRD_EXTRA_CFLAGS=
SR_CHECK_COMPILE_FLAGS([SRD_EXTRA_CFLAGS], [C99], [-std=c99 -c99 -AC99 -qlanglvl=extc99])
SR_CHECK_COMPILE_FLAGS([SRD_EXTRA_CFLAGS], [visibility], [-fvisibility=hidden])
# Select suitable compiler warning flags.
SR_ARG_ENABLE_WARNINGS([SRD_WFLAGS], [-Wall], [-Wall -Wextra -Wmissing-prototypes -Wshadow -Wformat=2 -Wno-format-nonliteral -Wfloat-equal])
# Link against libm, this is required (among other things) by Python.
SRD_EXTRA_LIBS=
SR_SEARCH_LIBS([SRD_EXTRA_LIBS], [pow], [m])
AC_SYS_LARGEFILE
AC_C_BIGENDIAN
#########################
## Optional features. ##
#########################
# Enable IRMP support by default. Accept user overrides.
AC_ARG_ENABLE([irmp],
[AS_HELP_STRING([--enable-irmp], [enable IRMP shared object [default=yes]])],
[], [enable_irmp_so=yes])
AM_CONDITIONAL([WITH_IRMP], [test "x$enable_irmp_so" = "xyes"])
test -n "$enable_irmp_so" || enable_irmp_so=no
##############################
## Finalize configuration ##
##############################
AC_SUBST([SRD_PKGLIBS])
# Retrieve the compile and link flags for all modules combined.
# Also, bail out at this point if any module dependency is not met.
PKG_CHECK_MODULES([LIBSIGROKDECODE], [glib-2.0 >= 2.34 $SRD_PKGLIBS])
PKG_CHECK_MODULES([LIBIRMP], [glib-2.0 >= 2.34 $SRD_PKGLIBS])
PKG_CHECK_MODULES([TESTS], [$SRD_PKGLIBS_TESTS glib-2.0 $SRD_PKGLIBS])
srd_glib_version=`$PKG_CONFIG --modversion glib-2.0 2>&AS_MESSAGE_LOG_FD`
AC_DEFINE_UNQUOTED([CONF_HOST], ["$host"],
[The canonical host libsigrokdecode will run on.])
AC_CONFIG_FILES([Makefile libsigrokdecode.pc])
AC_OUTPUT
cat >&AS_MESSAGE_FD <<_EOF
libsigrokdecode configuration summary:
- Package version................. $SRD_PACKAGE_VERSION
- Library ABI version............. $SRD_LIB_VERSION
- Prefix.......................... $prefix
- Building on..................... $build
- Building for.................... $host
- Building shared / static........ $enable_shared / $enable_static
Compile configuration:
- C compiler...................... $CC
- C compiler version.............. $srd_cc_version
- C compiler flags................ $CFLAGS
- Additional C compiler flags..... $SRD_EXTRA_CFLAGS
- C compiler warnings............. $SRD_WFLAGS
- Linker flags.................... $LDFLAGS
Detected libraries (required):
- glib-2.0 >= 2.34................ $srd_glib_version
$srd_pkglibs_summary
Detected libraries (optional):
$srd_pkglibs_opt_summary
Optional features:
- IRMP support library .......... $enable_irmp_so
_EOF