2 ## This file is part of the libsigrokdecode project.
4 ## Copyright (C) 2010 Bert Vermeulen <bert@biot.com>
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.
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.
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/>.
20 # We require at least autoconf 2.63 (AC_INIT format changed there).
23 # libsigrokdecode package version number (NOT the same as shared lib version!).
24 AC_INIT([libsigrokdecode], [0.6.0],
25 [sigrok-devel@lists.sourceforge.net], [libsigrokdecode],
26 [http://www.sigrok.org])
27 AC_CONFIG_MACRO_DIR([m4])
28 AC_CONFIG_AUX_DIR([autostuff])
29 AC_CONFIG_HEADERS([config.h version.h])
31 # We require at least automake 1.11 (needed for 'silent rules').
32 AM_INIT_AUTOMAKE([1.11 -Wall -Werror no-define subdir-objects check-news color-tests])
33 AM_SILENT_RULES([yes])
34 m4_ifdef([AM_PROG_AR], [AM_PROG_AR])
38 # Checks for programs.
45 # Required for per-target flags or subdir-objects with C sources.
48 # Set the standard the C library headers should conform to.
49 AH_VERBATIM([_POSIX_C_SOURCE], [/* The targeted POSIX standard. */
50 #ifndef _POSIX_C_SOURCE
51 # define _POSIX_C_SOURCE 200112L
54 # Get compiler versions.
55 SR_PROG_VERSION([$CC], [srd_cc_version])
60 # Set up the libsigrokdecode version defines.
61 SR_PKG_VERSION_SET([SRD_PACKAGE_VERSION], [AC_PACKAGE_VERSION])
63 # Library version for libsigrokdecode (NOT the same as the package version).
64 # Carefully read the libtool docs before updating these numbers!
65 # The algorithm for determining which number to change (and how) is nontrivial!
66 # http://www.gnu.org/software/libtool/manual/libtool.html#Updating-version-info
67 # Format: current:revision:age.
68 SR_LIB_VERSION_SET([SRD_LIB_VERSION], [4:0:0])
70 AM_CONDITIONAL([WIN32], [test -z "${host_os##mingw*}" || test -z "${host_os##cygwin*}"])
72 # Initialize pkg-config.
73 # We require at least 0.22, as "Requires.private" behaviour changed there.
76 ############################
77 ## Package dependencies ##
78 ############################
80 # Initialize pkg-config.
81 # We require at least 0.22, as "Requires.private" behaviour changed there.
82 PKG_PROG_PKG_CONFIG([0.22])
84 # Collect the pkg-config module names of all dependencies in SRD_PKGLIBS.
85 # These are used to derive the compiler flags and for the "Requires.private"
86 # field in the generated libsigrokdecode.pc file.
90 # Keep track of all checked modules so we can list them at the end.
91 SR_PKG_CHECK_SUMMARY([srd_pkglibs_summary])
93 # Python 3 is always needed.
94 # Starting with Python 3.8 we need to check for "python-3.8-embed"
95 # first, since usually only that variant will add "-lpython3.8".
96 # https://docs.python.org/3/whatsnew/3.8.html#debug-build-uses-the-same-abi-as-release-build
97 SR_PKG_CHECK([python3], [SRD_PKGLIBS],
98 [python-3.8-embed], [python-3.8 >= 3.8], [python-3.7 >= 3.7], [python-3.6 >= 3.6], [python-3.5 >= 3.5], [python-3.4 >= 3.4], [python-3.3 >= 3.3], [python-3.2 >= 3.2], [python3 >= 3.2])
99 AS_IF([test "x$sr_have_python3" = xno],
100 [AC_MSG_ERROR([Cannot find Python 3 development headers.])])
102 # We also need to find the name of the python3 executable (for 'make install').
103 # Some OSes call this python3, some call it python3.2, etc. etc.
104 AC_ARG_VAR([PYTHON3], [Python 3 interpreter])
105 AC_CHECK_PROGS([PYTHON3], [python3.8 python3.7 python3.6 python3.5 python3.4 python3.3 python3.2 python3])
106 AS_IF([test "x$PYTHON3" = x],
107 [AC_MSG_ERROR([Cannot find Python 3 interpreter.])])
109 ######################
111 ######################
113 # Keep track of all checked modules so we can list them at the end.
114 SR_PKG_CHECK_SUMMARY([srd_pkglibs_opt_summary])
116 # The Check unit testing framework is optional. Disable if not found.
117 SR_PKG_CHECK([check], [SRD_PKGLIBS_TESTS], [check >= 0.9.4])
118 AM_CONDITIONAL([HAVE_CHECK], [test "x$sr_have_check" = xyes])
120 # Enable the C99 standard if possible, and enforce the use
121 # of SRD_API to explicitly mark all public API functions.
123 SR_CHECK_COMPILE_FLAGS([SRD_EXTRA_CFLAGS], [C99], [-std=c99 -c99 -AC99 -qlanglvl=extc99])
124 SR_CHECK_COMPILE_FLAGS([SRD_EXTRA_CFLAGS], [visibility], [-fvisibility=hidden])
126 # Select suitable compiler warning flags.
127 SR_ARG_ENABLE_WARNINGS([SRD_WFLAGS], [-Wall], [-Wall -Wextra -Wmissing-prototypes -Wshadow -Wformat=2 -Wno-format-nonliteral -Wfloat-equal])
129 # Link against libm, this is required (among other things) by Python.
131 SR_SEARCH_LIBS([SRD_EXTRA_LIBS], [pow], [m])
137 ##############################
138 ## Finalize configuration ##
139 ##############################
141 AC_SUBST([SRD_PKGLIBS])
143 # Retrieve the compile and link flags for all modules combined.
144 # Also, bail out at this point if any module dependency is not met.
145 PKG_CHECK_MODULES([LIBSIGROKDECODE], [glib-2.0 >= 2.34 $SRD_PKGLIBS])
146 PKG_CHECK_MODULES([TESTS], [$SRD_PKGLIBS_TESTS glib-2.0 $SRD_PKGLIBS])
148 srd_glib_version=`$PKG_CONFIG --modversion glib-2.0 2>&AS_MESSAGE_LOG_FD`
150 AC_DEFINE_UNQUOTED([CONF_HOST], ["$host"],
151 [The canonical host libsigrokdecode will run on.])
153 AC_CONFIG_FILES([Makefile libsigrokdecode.pc])
157 cat >&AS_MESSAGE_FD <<_EOF
159 libsigrokdecode configuration summary:
160 - Package version................. $SRD_PACKAGE_VERSION
161 - Library ABI version............. $SRD_LIB_VERSION
162 - Prefix.......................... $prefix
163 - Building on..................... $build
164 - Building for.................... $host
165 - Building shared / static........ $enable_shared / $enable_static
167 Compile configuration:
168 - C compiler...................... $CC
169 - C compiler version.............. $srd_cc_version
170 - C compiler flags................ $CFLAGS
171 - Additional C compiler flags..... $SRD_EXTRA_CFLAGS
172 - C compiler warnings............. $SRD_WFLAGS
173 - Linker flags.................... $LDFLAGS
175 Detected libraries (required):
176 - glib-2.0 >= 2.34................ $srd_glib_version
178 Detected libraries (optional):
179 $srd_pkglibs_opt_summary