[libserialport.git] / configure.ac

##
## This file is part of the libserialport project.
##
## Copyright (C) 2010-2012 Bert Vermeulen <bert@biot.com>
## Copyright (C) 2013 Martin Ling <martin-libserialport@earth.li>
##
## This program is free software: you can redistribute it and/or modify
## it under the terms of the GNU Lesser 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 Lesser 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])

# libserialport package version number (NOT the same as shared lib version!).
m4_define([sp_package_version_major], [0])
m4_define([sp_package_version_minor], [1])
m4_define([sp_package_version_micro], [1])
m4_define([sp_package_version], [sp_package_version_major.sp_package_version_minor.sp_package_version_micro])

AC_INIT([libserialport], [sp_package_version], [martin-libserialport@earth.li],
	[libserialport], [http://sigrok.org/wiki/Libserialport])
AC_CONFIG_HEADERS([config.h])
AC_CONFIG_MACRO_DIR([autostuff])
AC_CONFIG_AUX_DIR([autostuff])

AH_BOTTOM([#if HAVE_STRUCT_TERMIOS_C_ISPEED && HAVE_STRUCT_TERMIOS_C_OSPEED
# define HAVE_TERMIOS_SPEED 1
#endif
#if HAVE_STRUCT_TERMIOS2_C_ISPEED && HAVE_STRUCT_TERMIOS2_C_OSPEED
# define HAVE_TERMIOS2_SPEED 1
#endif])

# We require at least automake 1.11 (needed for 'silent rules').
AM_INIT_AUTOMAKE([1.11 -Wall -Werror no-define check-news])
AM_SILENT_RULES([yes])
m4_ifdef([AM_PROG_AR], [AM_PROG_AR])

# Checks for programs.
AC_PROG_CC
AC_PROG_INSTALL
AC_PROG_LN_S

## SP_PROG_VERSION(program, sh-var)
## Obtain the version of <program> and store it in <sh-var>.
AC_DEFUN([SP_PROG_VERSION],
[dnl
m4_assert([$# >= 2])[]dnl
sp_prog_ver=`$1 --version 2>&AS_MESSAGE_LOG_FD | sed 1q 2>&AS_MESSAGE_LOG_FD`
AS_CASE([[$]?:$sp_prog_ver],
        [[0:*[0-9].[0-9]*]], [$2=$sp_prog_ver],
        [$2=unknown])[]dnl
])

SP_PROG_VERSION([$CC], [sp_cc_version])

# Initialize libtool.
LT_INIT

AC_DEFINE([SP_PACKAGE_VERSION_MAJOR], [sp_package_version_major], [.])
AC_DEFINE([SP_PACKAGE_VERSION_MINOR], [sp_package_version_minor], [.])
AC_DEFINE([SP_PACKAGE_VERSION_MICRO], [sp_package_version_micro], [.])
AC_DEFINE([SP_PACKAGE_VERSION_STRING], ["sp_package_version"], [.])
AC_SUBST([SP_PACKAGE_VERSION], [sp_package_version])

# Library version for libserialport (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
SP_LIB_VERSION_CURRENT=1
SP_LIB_VERSION_REVISION=0
SP_LIB_VERSION_AGE=1
AC_SUBST([SP_LIB_VERSION],
	["$SP_LIB_VERSION_CURRENT:$SP_LIB_VERSION_REVISION:$SP_LIB_VERSION_AGE"])

AC_DEFINE_UNQUOTED([SP_LIB_VERSION_CURRENT], [$SP_LIB_VERSION_CURRENT], [.])
AC_DEFINE_UNQUOTED([SP_LIB_VERSION_REVISION], [$SP_LIB_VERSION_REVISION], [.])
AC_DEFINE_UNQUOTED([SP_LIB_VERSION_AGE], [$SP_LIB_VERSION_AGE], [.])
AC_DEFINE_UNQUOTED([SP_LIB_VERSION_STRING], ["$SP_LIB_VERSION"], [.])

AM_CONDITIONAL([LINUX], [test -z "${host_os##linux*}" || test -z "${host_os##uclinux*}"])
AM_CONDITIONAL([WIN32], [test -z "${host_os##mingw*}"])
AM_CONDITIONAL([MACOSX], [test -z "${host_os##darwin*}"])
AM_CONDITIONAL([FREEBSD], [test -z "${host_os##freebsd*}"])

AM_COND_IF([WIN32], [SP_LIBS='-lsetupapi'], [SP_LIBS=])
AC_SUBST([SP_LIBS])

AM_COND_IF([FREEBSD], [SP_PKGLIBS='libusb-2.0'], [SP_PKGLIBS=])
AC_SUBST([SP_PKGLIBS])

AM_COND_IF([MACOSX], [AC_CHECK_HEADER([IOKit/IOKitLib.h], [],
	[AC_MSG_ERROR([IOKit/IOKitLib.h not found])])])

AS_CASE([$host_os], [linux*|darwin*|mingw*|freebsd*],, [
	AC_DEFINE([NO_ENUMERATION], [1], [Enumeration is unsupported.])
	AC_DEFINE([NO_PORT_METADATA], [1], [Port metadata is unavailable.])
])

AC_SYS_LARGEFILE

# Define size_t if not defined as standard.
AC_TYPE_SIZE_T

# Check for specific termios structures.
AC_CHECK_TYPES([struct termios2],,,
	[[#include <linux/termios.h>]])
AC_CHECK_MEMBERS([struct termios.c_ispeed, struct termios.c_ospeed,
		struct termios2.c_ispeed, struct termios2.c_ospeed],,,
	[[#include <linux/termios.h>]])

# Check for the BOTHER definition, needed for setting arbitrary baud rates.
# We can't just #ifdef BOTHER in the code, because of the separation between
# code using libc headers and code using kernel termios.h headers.
AC_CHECK_DECLS([BOTHER],,, [[#include <linux/termios.h>]])

# Check for serial_struct.
AC_CHECK_TYPES([struct serial_struct],,, [[#include <linux/serial.h>]])

# Check for realpath().
AC_CHECK_FUNC([realpath], [AC_DEFINE(HAVE_REALPATH, 1, [realpath is available.])], [])

# Check for flock().
AC_CHECK_HEADER([sys/file.h], [AC_DEFINE(HAVE_SYS_FILE_H, 1, [sys/file.h is available.])], [])
AC_CHECK_FUNC([flock], [AC_DEFINE(HAVE_FLOCK, 1, [flock is available.])], [])

# Check for clock_gettime().
AC_CHECK_FUNC([clock_gettime],
	[AC_DEFINE(HAVE_CLOCK_GETTIME, 1, [clock_gettime is available.])], [])

AC_CACHE_CHECK([for visibility control], [sp_cv_visibility_control], [
	sp_saved_CFLAGS=$CFLAGS
	CFLAGS="$CFLAGS -Werror"
	AC_COMPILE_IFELSE([AC_LANG_SOURCE(
		[[__attribute__((visibility("hidden"))) void foo(void) {}]])],
		[sp_cv_visibility_control=attribute],
		[AC_COMPILE_IFELSE([AC_LANG_SOURCE(
			[[__declspec(dllexport) void foo(void) {}]])],
			[sp_cv_visibility_control=declspec],
			[sp_cv_visibility_control=none])])
	CFLAGS=$sp_saved_CFLAGS
])
AS_CASE([$sp_cv_visibility_control],
	[attribute],	[SP_API='__attribute__((visibility("default")))'
			SP_PRIV='__attribute__((visibility("hidden")))'],
	[declspec],	[SP_API='__declspec(dllexport)' SP_PRIV=],
			[SP_API= SP_PRIV=])
AC_DEFINE_UNQUOTED([SP_API], [$SP_API], [Macro preceding public API functions])
AC_DEFINE_UNQUOTED([SP_PRIV], [$SP_PRIV], [Macro preceding private functions])

AC_CONFIG_FILES([Makefile libserialport.pc])

AC_OUTPUT

cat >&AS_MESSAGE_FD <<_EOF

libserialport configuration summary:

 - Package version................. $SP_PACKAGE_VERSION
 - Library ABI version............. $SP_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.............. $sp_cc_version
 - C compiler flags................ $CFLAGS
 - Linker flags.................... $LDFLAGS

_EOF
Commit	Line	Data
0662f2bb ML	1	##
	2	## This file is part of the libserialport project.
	3	##
	4	## Copyright (C) 2010-2012 Bert Vermeulen <bert@biot.com>
	5	## Copyright (C) 2013 Martin Ling <martin-libserialport@earth.li>
	6	##
	7	## This program is free software: you can redistribute it and/or modify
	8	## it under the terms of the GNU Lesser General Public License as
	9	## published by the Free Software Foundation, either version 3 of the
	10	## License, or (at your option) any later version.
	11	##
	12	## This program is distributed in the hope that it will be useful,
	13	## but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	## GNU General Public License for more details.
	16	##
	17	## You should have received a copy of the GNU Lesser General Public License
	18	## along with this program. If not, see <http://www.gnu.org/licenses/>.
	19	##
	20
	21	# We require at least autoconf 2.63 (AC_INIT format changed there).
	22	AC_PREREQ([2.63])
	23
	24	# libserialport package version number (NOT the same as shared lib version!).
	25	m4_define([sp_package_version_major], [0])
3f2f48fc UH	26	m4_define([sp_package_version_minor], [1])
3f2f48fc UH	27	m4_define([sp_package_version_micro], [1])
7de20e39	28	m4_define([sp_package_version], [sp_package_version_major.sp_package_version_minor.sp_package_version_micro])
0662f2bb ML	29
0662f2bb ML	30	AC_INIT([libserialport], [sp_package_version], [martin-libserialport@earth.li],
728f6de5	31	[libserialport], [http://sigrok.org/wiki/Libserialport])
f6e32b2d	32	AC_CONFIG_HEADERS([config.h])
0662f2bb ML	33	AC_CONFIG_MACRO_DIR([autostuff])
	34	AC_CONFIG_AUX_DIR([autostuff])
	35
f1c916ed DE	36	AH_BOTTOM([#if HAVE_STRUCT_TERMIOS_C_ISPEED && HAVE_STRUCT_TERMIOS_C_OSPEED
	37	# define HAVE_TERMIOS_SPEED 1
	38	#endif
	39	#if HAVE_STRUCT_TERMIOS2_C_ISPEED && HAVE_STRUCT_TERMIOS2_C_OSPEED
	40	# define HAVE_TERMIOS2_SPEED 1
f1c916ed	41	#endif])
5ca38cdf	42
0662f2bb	43	# We require at least automake 1.11 (needed for 'silent rules').
f1c916ed DE	44	AM_INIT_AUTOMAKE([1.11 -Wall -Werror no-define check-news])
f1c916ed DE	45	AM_SILENT_RULES([yes])
0662f2bb ML	46	m4_ifdef([AM_PROG_AR], [AM_PROG_AR])
0662f2bb ML	47
0662f2bb ML	48	# Checks for programs.
0662f2bb ML	49	AC_PROG_CC
0662f2bb ML	50	AC_PROG_INSTALL
	51	AC_PROG_LN_S
	52
d8de88de UH	53	## SP_PROG_VERSION(program, sh-var)
	54	## Obtain the version of <program> and store it in <sh-var>.
	55	AC_DEFUN([SP_PROG_VERSION],
	56	[dnl
	57	m4_assert([$# >= 2])[]dnl
	58	sp_prog_ver=`$1 --version 2>&AS_MESSAGE_LOG_FD \| sed 1q 2>&AS_MESSAGE_LOG_FD`
	59	AS_CASE([[$]?:$sp_prog_ver],
	60	[[0:[0-9].[0-9]]], [$2=$sp_prog_ver],
	61	[$2=unknown])[]dnl
	62	])
	63
	64	SP_PROG_VERSION([$CC], [sp_cc_version])
	65
0662f2bb ML	66	# Initialize libtool.
	67	LT_INIT
	68
f1c916ed DE	69	AC_DEFINE([SP_PACKAGE_VERSION_MAJOR], [sp_package_version_major], [.])
	70	AC_DEFINE([SP_PACKAGE_VERSION_MINOR], [sp_package_version_minor], [.])
	71	AC_DEFINE([SP_PACKAGE_VERSION_MICRO], [sp_package_version_micro], [.])
	72	AC_DEFINE([SP_PACKAGE_VERSION_STRING], ["sp_package_version"], [.])
	73	AC_SUBST([SP_PACKAGE_VERSION], [sp_package_version])
0662f2bb ML	74
	75	# Library version for libserialport (NOT the same as the package version).
	76	# Carefully read the libtool docs before updating these numbers!
	77	# The algorithm for determining which number to change (and how) is nontrivial!
	78	# http://www.gnu.org/software/libtool/manual/libtool.html#Updating-version-info
3fcdc9f7	79	SP_LIB_VERSION_CURRENT=1
0662f2bb	80	SP_LIB_VERSION_REVISION=0
3fcdc9f7	81	SP_LIB_VERSION_AGE=1
f1c916ed DE	82	AC_SUBST([SP_LIB_VERSION],
	83	["$SP_LIB_VERSION_CURRENT:$SP_LIB_VERSION_REVISION:$SP_LIB_VERSION_AGE"])
	84
	85	AC_DEFINE_UNQUOTED([SP_LIB_VERSION_CURRENT], [$SP_LIB_VERSION_CURRENT], [.])
	86	AC_DEFINE_UNQUOTED([SP_LIB_VERSION_REVISION], [$SP_LIB_VERSION_REVISION], [.])
	87	AC_DEFINE_UNQUOTED([SP_LIB_VERSION_AGE], [$SP_LIB_VERSION_AGE], [.])
	88	AC_DEFINE_UNQUOTED([SP_LIB_VERSION_STRING], ["$SP_LIB_VERSION"], [.])
	89
b2359c5c	90	AM_CONDITIONAL([LINUX], [test -z "${host_os##linux}" \|\| test -z "${host_os##uclinux}"])
75a280a5	91	AM_CONDITIONAL([WIN32], [test -z "${host_os##mingw*}"])
f1c916ed DE	92	AM_CONDITIONAL([MACOSX], [test -z "${host_os##darwin*}"])
	93	AM_CONDITIONAL([FREEBSD], [test -z "${host_os##freebsd*}"])
	94
	95	AM_COND_IF([WIN32], [SP_LIBS='-lsetupapi'], [SP_LIBS=])
	96	AC_SUBST([SP_LIBS])
	97
2a6c24be UH	98	AM_COND_IF([FREEBSD], [SP_PKGLIBS='libusb-2.0'], [SP_PKGLIBS=])
	99	AC_SUBST([SP_PKGLIBS])
	100
f1c916ed DE	101	AM_COND_IF([MACOSX], [AC_CHECK_HEADER([IOKit/IOKitLib.h], [],
	102	[AC_MSG_ERROR([IOKit/IOKitLib.h not found])])])
	103
75a280a5	104	AS_CASE([$host_os], [linux\|darwin\|mingw\|freebsd],, [
f1c916ed DE	105	AC_DEFINE([NO_ENUMERATION], [1], [Enumeration is unsupported.])
	106	AC_DEFINE([NO_PORT_METADATA], [1], [Port metadata is unavailable.])
	107	])
e4bffe06	108
07f61c71 DE	109	AC_SYS_LARGEFILE
07f61c71 DE	110
7c3a1ee3	111	# Define size_t if not defined as standard.
0662f2bb	112	AC_TYPE_SIZE_T
2dcf8308 ML	113
2dcf8308 ML	114	# Check for specific termios structures.
6f9b03e5	115	AC_CHECK_TYPES([struct termios2],,,
f1c916ed DE	116	[[#include <linux/termios.h>]])
	117	AC_CHECK_MEMBERS([struct termios.c_ispeed, struct termios.c_ospeed,
	118	struct termios2.c_ispeed, struct termios2.c_ospeed],,,
	119	[[#include <linux/termios.h>]])
0662f2bb	120
59182fbb ML	121	# Check for the BOTHER definition, needed for setting arbitrary baud rates.
	122	# We can't just #ifdef BOTHER in the code, because of the separation between
	123	# code using libc headers and code using kernel termios.h headers.
f1c916ed	124	AC_CHECK_DECLS([BOTHER],,, [[#include <linux/termios.h>]])
59182fbb	125
12056e2f	126	# Check for serial_struct.
f1c916ed DE	127	AC_CHECK_TYPES([struct serial_struct],,, [[#include <linux/serial.h>]])
f1c916ed DE	128
95bad38c ST	129	# Check for realpath().
	130	AC_CHECK_FUNC([realpath], [AC_DEFINE(HAVE_REALPATH, 1, [realpath is available.])], [])
	131
ffbfc5c7 LV	132	# Check for flock().
	133	AC_CHECK_HEADER([sys/file.h], [AC_DEFINE(HAVE_SYS_FILE_H, 1, [sys/file.h is available.])], [])
	134	AC_CHECK_FUNC([flock], [AC_DEFINE(HAVE_FLOCK, 1, [flock is available.])], [])
	135
46bdc20c ML	136	# Check for clock_gettime().
	137	AC_CHECK_FUNC([clock_gettime],
	138	[AC_DEFINE(HAVE_CLOCK_GETTIME, 1, [clock_gettime is available.])], [])
	139
f1c916ed DE	140	AC_CACHE_CHECK([for visibility control], [sp_cv_visibility_control], [
	141	sp_saved_CFLAGS=$CFLAGS
	142	CFLAGS="$CFLAGS -Werror"
	143	AC_COMPILE_IFELSE([AC_LANG_SOURCE(
	144	[[__attribute__((visibility("hidden"))) void foo(void) {}]])],
	145	[sp_cv_visibility_control=attribute],
	146	[AC_COMPILE_IFELSE([AC_LANG_SOURCE(
	147	[[__declspec(dllexport) void foo(void) {}]])],
	148	[sp_cv_visibility_control=declspec],
	149	[sp_cv_visibility_control=none])])
	150	CFLAGS=$sp_saved_CFLAGS
	151	])
	152	AS_CASE([$sp_cv_visibility_control],
	153	[attribute], [SP_API='__attribute__((visibility("default")))'
	154	SP_PRIV='__attribute__((visibility("hidden")))'],
	155	[declspec], [SP_API='__declspec(dllexport)' SP_PRIV=],
	156	[SP_API= SP_PRIV=])
	157	AC_DEFINE_UNQUOTED([SP_API], [$SP_API], [Macro preceding public API functions])
	158	AC_DEFINE_UNQUOTED([SP_PRIV], [$SP_PRIV], [Macro preceding private functions])
	159
	160	AC_CONFIG_FILES([Makefile libserialport.pc])
0662f2bb ML	161
	162	AC_OUTPUT
	163
f1c916ed DE	164	cat >&AS_MESSAGE_FD <<_EOF
	165
	166	libserialport configuration summary:
	167
5ec2f93b UH	168	- Package version................. $SP_PACKAGE_VERSION
	169	- Library ABI version............. $SP_LIB_VERSION
	170	- Prefix.......................... $prefix
	171	- Building on..................... $build
	172	- Building for.................... $host
0b539331	173	- Building shared / static........ $enable_shared / $enable_static
f1c916ed	174
d8de88de UH	175	Compile configuration:
	176	- C compiler...................... $CC
	177	- C compiler version.............. $sp_cc_version
	178	- C compiler flags................ $CFLAGS
	179	- Linker flags.................... $LDFLAGS
	180
f1c916ed	181	_EOF