configure.ac

   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).
  21 AC_PREREQ([2.63])
  22
  23 # libsigrokdecode package version number (NOT the same as shared lib version!).
  24 m4_define([srd_package_version_major], [0])
  25 m4_define([srd_package_version_minor], [4])
  26 m4_define([srd_package_version_micro], [0])
  27 m4_define([srd_package_version_suffix], [-git])
  28 m4_define([srd_package_version], [srd_package_version_major.srd_package_version_minor.srd_package_version_micro[]srd_package_version_suffix])
  29
  30 AC_INIT([libsigrokdecode], [srd_package_version],
  31         [sigrok-devel@lists.sourceforge.net], [libsigrokdecode],
  32         [http://www.sigrok.org])
  33 AC_CONFIG_HEADER([config.h])
  34 AC_CONFIG_MACRO_DIR([autostuff])
  35 AC_CONFIG_AUX_DIR([autostuff])
  36
  37 # We require at least automake 1.11 (needed for 'silent rules').
  38 AM_INIT_AUTOMAKE([1.11 -Wall -Werror subdir-objects check-news color-tests])
  39 m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
  40 m4_ifdef([AM_PROG_AR], [AM_PROG_AR])
  41
  42 AH_TOP([#ifndef SRD_CONFIG_H
  43 #define SRD_CONFIG_H    /* To stop multiple inclusions. */])
  44 AH_BOTTOM([#endif /* SRD_CONFIG_H */])
  45
  46 # Enable more compiler warnings via -Wall and -Wextra. Add -fvisibility=hidden
  47 # and enforce use of SRD_API to explicitly mark all public API functions.
  48 AM_CFLAGS="$AM_CFLAGS -Wall -Wextra -Wmissing-prototypes -fvisibility=hidden"
  49
  50 # Checks for programs.
  51 AC_PROG_CC
  52 AC_PROG_CPP
  53 AC_PROG_INSTALL
  54 AC_PROG_LN_S
  55
  56 # Required for per-target flags or subdir-objects with C sources.
  57 AM_PROG_CC_C_O
  58
  59 # Initialize libtool.
  60 LT_INIT
  61
  62 # Initialize pkg-config.
  63 # We require at least 0.22, as "Requires.private" behaviour changed there.
  64 PKG_PROG_PKG_CONFIG([0.22])
  65
  66 # Library version for libsigrokdecode (NOT the same as the package version).
  67 # Carefully read the libtool docs before updating these numbers!
  68 # The algorithm for determining which number to change (and how) is nontrivial!
  69 # http://www.gnu.org/software/libtool/manual/libtool.html#Updating-version-info
  70 SRD_LIB_VERSION_CURRENT=2
  71 SRD_LIB_VERSION_REVISION=0
  72 SRD_LIB_VERSION_AGE=0
  73 SRD_LIB_VERSION="$SRD_LIB_VERSION_CURRENT:$SRD_LIB_VERSION_REVISION:$SRD_LIB_VERSION_AGE"
  74 SRD_LIB_LDFLAGS="-version-info $SRD_LIB_VERSION"
  75 AC_SUBST(SRD_LIB_VERSION_CURRENT)
  76 AC_SUBST(SRD_LIB_VERSION_REVISION)
  77 AC_SUBST(SRD_LIB_VERSION_AGE)
  78 AC_SUBST(SRD_LIB_VERSION)
  79 AC_SUBST(SRD_LIB_LDFLAGS)
  80
  81 # Checks for libraries.
  82
  83 # libglib-2.0 is always needed.
  84 # Note: glib-2.0 is part of the libsigrokdecode API
  85 # (hard pkg-config requirement).
  86 AM_PATH_GLIB_2_0([2.24.0],
  87         [AM_CFLAGS="$AM_CFLAGS $GLIB_CFLAGS"; LIBS="$LIBS $GLIB_LIBS"])
  88
  89 # Python 3 is always needed.
  90 # Note: We need to try a few different variants, since some systems have a
  91 # python3.pc file, others have a python-3.3.pc file, and so on.
  92 # We also export the name of the package so that it can be correctly
  93 # added to libsigrokdecode.pc.
  94 # See also: http://sigrok.org/wiki/Libsigrokdecode/Python
  95 CPPFLAGS_PYTHON=""
  96 LDFLAGS_PYTHON=""
  97 pyver="none"
  98 PKG_CHECK_MODULES([python3], [python3 >= 3.2],
  99         [pyver=`$PKG_CONFIG --modversion python3`;
 100         CPPFLAGS_PYTHON="$CPPFLAGS_PYTHON $python3_CFLAGS";
 101         LDFLAGS_PYTHON="$LDFLAGS_PYTHON $python3_LIBS";
 102         MODNAME_PYTHON="python3"],
 103 [PKG_CHECK_MODULES([python34], [python-3.4 >= 3.4],
 104         [pyver=`$PKG_CONFIG --modversion python-3.4`;
 105         CPPFLAGS_PYTHON="$CPPFLAGS_PYTHON $python34_CFLAGS";
 106         LDFLAGS_PYTHON="$LDFLAGS_PYTHON $python34_LIBS";
 107         MODNAME_PYTHON="python-3.4"],
 108 [PKG_CHECK_MODULES([python33], [python-3.3 >= 3.3],
 109         [pyver=`$PKG_CONFIG --modversion python-3.3`;
 110         CPPFLAGS_PYTHON="$CPPFLAGS_PYTHON $python33_CFLAGS";
 111         LDFLAGS_PYTHON="$LDFLAGS_PYTHON $python33_LIBS";
 112         MODNAME_PYTHON="python-3.3"],
 113 [PKG_CHECK_MODULES([python32], [python-3.2 >= 3.2],
 114         [pyver=`$PKG_CONFIG --modversion python-3.2`;
 115         CPPFLAGS_PYTHON="$CPPFLAGS_PYTHON $python32_CFLAGS";
 116         LDFLAGS_PYTHON="$LDFLAGS_PYTHON $python32_LIBS";
 117         MODNAME_PYTHON="python-3.2"],
 118 )])])])
 119 AC_SUBST(CPPFLAGS_PYTHON)
 120 AC_SUBST(LDFLAGS_PYTHON)
 121 AC_SUBST(MODNAME_PYTHON)
 122
 123 # We also need to find the name of the python3 executable (for 'make install').
 124 # Some OSes call this python3, some call it python3.2, etc. etc.
 125 AC_CHECK_PROGS([PYTHON3], [python3.4 python3.3 python3.2 python3])
 126 if test "x$PYTHON3" = "x"; then
 127         AC_MSG_ERROR([cannot find python3 executable.])
 128 fi
 129
 130 # Link against libm, this is required (among other things) by Python.
 131 AC_SEARCH_LIBS([pow], [m])
 132
 133 # The Check unit testing framework is optional. Disable if not found.
 134 PKG_CHECK_MODULES([check], [check >= 0.9.4],
 135         [have_check="yes"], [have_check="no"])
 136 AM_CONDITIONAL(HAVE_CHECK, test x"$have_check" = "xyes")
 137
 138 # Checks for header files.
 139 # These are already checked: inttypes.h stdint.h stdlib.h string.h unistd.h.
 140
 141 AC_SUBST(DECODERS_DIR, "$datadir/libsigrokdecode/decoders")
 142 AC_SUBST(MAKEFLAGS, '--no-print-directory')
 143 AC_SUBST(AM_LIBTOOLFLAGS, '--silent')
 144
 145 SRD_PACKAGE_VERSION_MAJOR=srd_package_version_major
 146 SRD_PACKAGE_VERSION_MINOR=srd_package_version_minor
 147 SRD_PACKAGE_VERSION_MICRO=srd_package_version_micro
 148 SRD_PACKAGE_VERSION=srd_package_version
 149
 150 AC_SUBST(SRD_PACKAGE_VERSION_MAJOR)
 151 AC_SUBST(SRD_PACKAGE_VERSION_MINOR)
 152 AC_SUBST(SRD_PACKAGE_VERSION_MICRO)
 153 AC_SUBST(SRD_PACKAGE_VERSION)
 154
 155 AC_SUBST(AM_CFLAGS)
 156
 157 AC_CONFIG_FILES([Makefile version.h libsigrokdecode.pc])
 158
 159 AC_OUTPUT
 160
 161 echo
 162 echo "libsigrokdecode configuration summary:"
 163 echo
 164 echo "  - Package version (major.minor.micro):    $SRD_PACKAGE_VERSION"
 165 echo "  - Library version (current:revision:age): $SRD_LIB_VERSION"
 166 echo "  - Prefix: $prefix"
 167 echo "  - Building on: $build"
 168 echo "  - Building for: $host"
 169 echo
 170 echo "Detected libraries:"
 171 echo
 172
 173 if test "x$pyver" = "xnone"; then
 174         echo "  - (REQUIRED) python >= 3.2: no"
 175 else
 176         echo "  - (REQUIRED) python >= 3.2: yes ($pyver)"
 177 fi
 178
 179 # Note: This only works for libs with pkg-config integration.
 180 for lib in "glib-2.0 >= 2.24.0" "check >= 0.9.4"; do
 181         optional="OPTIONAL"
 182         if test "x$lib" = "xglib-2.0 >= 2.24.0"; then optional="REQUIRED"; fi
 183         if `$PKG_CONFIG --exists $lib`; then
 184                 ver=`$PKG_CONFIG --modversion $lib`
 185                 answer="yes ($ver)"
 186         else
 187                 answer="no"
 188         fi
 189         echo "  - ($optional) $lib: $answer"
 190 done
 191
 192 echo
 193 echo "Enabled features:"
 194 echo
 195 echo "  - (OPTIONAL) Library unit test framework support: $have_check"
 196 echo
 197