1## 2## This file is part of the libsigrokdecode project. 3## 4## Copyright (C) 2010 Bert Vermeulen <bert@biot.com> 5## 6## This program is free software: you can redistribute it and/or modify 7## it under the terms of the GNU General Public License as published by 8## the Free Software Foundation, either version 3 of the License, or 9## (at your option) any later version. 10## 11## This program is distributed in the hope that it will be useful, 12## but WITHOUT ANY WARRANTY; without even the implied warranty of 13## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14## GNU General Public License for more details. 15## 16## You should have received a copy of the GNU General Public License 17## along with this program. If not, see <http://www.gnu.org/licenses/>. 18## 19 20# We require at least autoconf 2.63 (AC_INIT format changed there). 21AC_PREREQ([2.63]) 22 23# libsigrokdecode package version number (NOT the same as shared lib version!). 24AC_INIT([libsigrokdecode], [0.5.3], 25 [sigrok-devel@lists.sourceforge.net], [libsigrokdecode], 26 [http://www.sigrok.org]) 27AC_CONFIG_MACRO_DIR([m4]) 28AC_CONFIG_AUX_DIR([autostuff]) 29AC_CONFIG_HEADERS([config.h version.h]) 30 31# We require at least automake 1.11 (needed for 'silent rules'). 32AM_INIT_AUTOMAKE([1.11 -Wall -Werror no-define subdir-objects check-news color-tests]) 33AM_SILENT_RULES([yes]) 34m4_ifdef([AM_PROG_AR], [AM_PROG_AR]) 35 36AC_CANONICAL_HOST 37 38# Checks for programs. 39AC_PROG_CC 40AC_PROG_INSTALL 41AC_PROG_LN_S 42 43# Required for per-target flags or subdir-objects with C sources. 44AM_PROG_CC_C_O 45 46# Set the standard the C library headers should conform to. 47AH_VERBATIM([_POSIX_C_SOURCE], [/* The targeted POSIX standard. */ 48#ifndef _POSIX_C_SOURCE 49# define _POSIX_C_SOURCE 200112L 50#endif]) 51 52# Get compiler versions. 53SR_PROG_VERSION([$CC], [srd_cc_version]) 54 55# Initialize libtool. 56LT_INIT 57 58# Set up the libsigrokdecode version defines. 59SR_PKG_VERSION_SET([SRD_PACKAGE_VERSION], [AC_PACKAGE_VERSION]) 60 61# Library version for libsigrokdecode (NOT the same as the package version). 62# Carefully read the libtool docs before updating these numbers! 63# The algorithm for determining which number to change (and how) is nontrivial! 64# http://www.gnu.org/software/libtool/manual/libtool.html#Updating-version-info 65# Format: current:revision:age. 66SR_LIB_VERSION_SET([SRD_LIB_VERSION], [6:1:2]) 67 68AM_CONDITIONAL([WIN32], [test -z "${host_os##mingw*}" || test -z "${host_os##cygwin*}"]) 69 70# Initialize pkg-config. 71# We require at least 0.22, as "Requires.private" behaviour changed there. 72PKG_PROG_PKG_CONFIG 73 74############################ 75## Package dependencies ## 76############################ 77 78# Initialize pkg-config. 79# We require at least 0.22, as "Requires.private" behaviour changed there. 80PKG_PROG_PKG_CONFIG([0.22]) 81 82# Collect the pkg-config module names of all dependencies in SRD_PKGLIBS. 83# These are used to derive the compiler flags and for the "Requires.private" 84# field in the generated libsigrokdecode.pc file. 85SRD_PKGLIBS= 86SRD_PKGLIBS_TESTS= 87 88# Keep track of all checked modules so we can list them at the end. 89SR_PKG_CHECK_SUMMARY([srd_pkglibs_summary]) 90 91# Python 3 is always needed. 92# Starting with Python 3.8 we need to check for "python-3.8-embed" 93# first, since usually only that variant will add "-lpython3.8". 94# https://docs.python.org/3/whatsnew/3.8.html#debug-build-uses-the-same-abi-as-release-build 95SR_PKG_CHECK([python3], [SRD_PKGLIBS], 96 [python-3.8-embed], [python-3.8 >= 3.8], [python-3.7 >= 3.7], [python-3.6 >= 3.6], [python-3.5 >= 3.5], [python-3.4 >= 3.4], [python-3.3 >= 3.3], [python-3.2 >= 3.2], [python3 >= 3.2]) 97AS_IF([test "x$sr_have_python3" = xno], 98 [AC_MSG_ERROR([Cannot find Python 3 development headers.])]) 99 100# We also need to find the name of the python3 executable (for 'make install'). 101# Some OSes call this python3, some call it python3.2, etc. etc. 102AC_ARG_VAR([PYTHON3], [Python 3 interpreter]) 103AC_CHECK_PROGS([PYTHON3], [python3.8 python3.7 python3.6 python3.5 python3.4 python3.3 python3.2 python3]) 104AS_IF([test "x$PYTHON3" = x], 105 [AC_MSG_ERROR([Cannot find Python 3 interpreter.])]) 106 107###################### 108## Feature checks ## 109###################### 110 111# Keep track of all checked modules so we can list them at the end. 112SR_PKG_CHECK_SUMMARY([srd_pkglibs_opt_summary]) 113 114# The Check unit testing framework is optional. Disable if not found. 115SR_PKG_CHECK([check], [SRD_PKGLIBS_TESTS], [check >= 0.9.4]) 116AM_CONDITIONAL([HAVE_CHECK], [test "x$sr_have_check" = xyes]) 117 118# Enable the C99 standard if possible, and enforce the use 119# of SRD_API to explicitly mark all public API functions. 120SRD_EXTRA_CFLAGS= 121SR_CHECK_COMPILE_FLAGS([SRD_EXTRA_CFLAGS], [C99], [-std=c99 -c99 -AC99 -qlanglvl=extc99]) 122SR_CHECK_COMPILE_FLAGS([SRD_EXTRA_CFLAGS], [visibility], [-fvisibility=hidden]) 123 124# Select suitable compiler warning flags. 125SR_ARG_ENABLE_WARNINGS([SRD_WFLAGS], [-Wall], [-Wall -Wextra -Wmissing-prototypes -Wshadow -Wformat=2 -Wno-format-nonliteral -Wfloat-equal]) 126 127# Link against libm, this is required (among other things) by Python. 128SRD_EXTRA_LIBS= 129SR_SEARCH_LIBS([SRD_EXTRA_LIBS], [pow], [m]) 130 131AC_SYS_LARGEFILE 132 133AC_C_BIGENDIAN 134 135############################## 136## Finalize configuration ## 137############################## 138 139AC_SUBST([SRD_PKGLIBS]) 140 141# Retrieve the compile and link flags for all modules combined. 142# Also, bail out at this point if any module dependency is not met. 143PKG_CHECK_MODULES([LIBSIGROKDECODE], [glib-2.0 >= 2.34 $SRD_PKGLIBS]) 144PKG_CHECK_MODULES([TESTS], [$SRD_PKGLIBS_TESTS glib-2.0 $SRD_PKGLIBS]) 145 146srd_glib_version=`$PKG_CONFIG --modversion glib-2.0 2>&AS_MESSAGE_LOG_FD` 147 148AC_DEFINE_UNQUOTED([CONF_HOST], ["$host"], 149 [The canonical host libsigrokdecode will run on.]) 150 151AC_CONFIG_FILES([Makefile libsigrokdecode.pc]) 152 153AC_OUTPUT 154 155cat >&AS_MESSAGE_FD <<_EOF 156 157libsigrokdecode configuration summary: 158 - Package version................. $SRD_PACKAGE_VERSION 159 - Library ABI version............. $SRD_LIB_VERSION 160 - Prefix.......................... $prefix 161 - Building on..................... $build 162 - Building for.................... $host 163 - Building shared / static........ $enable_shared / $enable_static 164 165Compile configuration: 166 - C compiler...................... $CC 167 - C compiler version.............. $srd_cc_version 168 - C compiler flags................ $CFLAGS 169 - Additional C compiler flags..... $SRD_EXTRA_CFLAGS 170 - C compiler warnings............. $SRD_WFLAGS 171 - Linker flags.................... $LDFLAGS 172 173Detected libraries (required): 174 - glib-2.0 >= 2.34................ $srd_glib_version 175$srd_pkglibs_summary 176Detected libraries (optional): 177$srd_pkglibs_opt_summary 178_EOF 179