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configure.ac
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configure.ac
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#
# ddcutil autotools configure script
#
# Copyright (C) 2014-2024 Sanford Rockowitz <rockowitz@minsoft.com>
# SPDX-License-Identifier: GPL-2.0-or-later
dnl General notes:
dnl - Macro names in comments are written in lower case to avoid processing as actual macros
###
### Initial Setup
###
AC_PREREQ([2.69])
m4_define([ddcutil_major_version], [2])
m4_define([ddcutil_minor_version], [1])
m4_define([ddcutil_micro_version], [5])
dnl ddcutil_version_suffix does not begin with hyphen, e.g. "dev", not "-dev"
m4_define([ddcutil_version_suffix], ["dev"])
# m4_ifelse(ddcutil_version_suffix,[], m4_define([ddcutil_version], [a]),define([ddcutil_version],[b]))
dnl mf_define( [ddcutil_version], m4_format([%s.%s.%s%s],[ddcutil_major_version],[ddcutil_minor_version],[ddcutil_micro_version],[ddcutil_version_suffix])
m4_define([ddcutil_version], [ddcutil_major_version.ddcutil_minor_version.ddcutil_micro_version])
dnl m4_ifdef('ddcutil_version_suffix' ,m4_define([ddcutil_version], [ddcutil_major_version.ddcutil_minor_version.ddcutil_micro_version]))
dnl It should be possible to define here the "fully qualified" version name, conditionally
dnl containing the version suffix, but after hours of trying to get that to work (5/2021)
dnl I gave up. It will be handled in the C code.
dnl process command line args, perform initializations
dnl sets among several output vars including PACKAGE_NAME, PACKAGE_VERSION,
dnl PACKAGE_TARNAME (name of output package)
dnl causes VERSION to be set in config.h
AC_INIT([ddcutil],[ddcutil_version],[rockowitz@minsoft.com])
dnl define preprocessor symbols
dnl was AC_DEFINE_UNQUOTED, but don't need extra handling?
dnl symbol value set by comment
AC_DEFINE( [VERSION_VMAJOR], [ ddcutil_major_version ], [ddcutil major version] )
AC_DEFINE( [VERSION_VMINOR], [ ddcutil_minor_version ], [ddcutil minor version] )
AC_DEFINE( [VERSION_VMICRO], [ ddcutil_micro_version ], [ddcutil micro version] )
AC_DEFINE( [VERSION_VSUFFIX],[ ddcutil_version_suffix ], [ddcutil version suffix] )
dnl substitute @PACKAGE_MAJOR@ etc. in Makefile.am with the value of the environment variable
AC_SUBST( VERSION_VMAJOR, [ddcutil_major_version] )
AC_SUBST( VERSION_VMINOR, [ddcutil_minor_version] )
AC_SUBST( VERSION_VMICRO, [ddcutil_micro_version] )
AC_SUBST( VERSION_VSUFFIX, [ddcutil_version_suffix] )
AC_ARG_VAR(DBG, [Turn on script debugging messages(0/1)])
dnl AC_MSG_NOTICE([DBG = |$DBG|])
AM_CONDITIONAL(WARNINGS_ARE_ERRORS_COND, [test "x$ddcutil_version_suffix" != "x"] )
AS_IF( [test 0$DBG -ne 0],
AC_MSG_NOTICE([debug messages enabled]),
AC_MSG_NOTICE([debug messages disabled])
)
dnl reduce clutter, save files litmain.sh, config.guess, missing etc. here instead of top directory
AC_CONFIG_AUX_DIR(config)
dnl sanity check: verify a unique file in source directory:
AC_CONFIG_SRCDIR([src/util/coredefs.h])
AC_CONFIG_HEADERS([config.h])
AC_CONFIG_MACRO_DIR([m4])
AC_CONFIG_FILES([
Makefile
src/Makefile
src/util/Makefile
src/usb_util/Makefile
src/base/Makefile
src/vcp/Makefile
src/dynvcp/Makefile
src/i2c/Makefile
src/usb/Makefile
src/ddc/Makefile
src/test/Makefile
src/cmdline/Makefile
src/app_sysenv/Makefile
src/app_ddcutil/Makefile
src/libmain/Makefile
src/sample_clients/Makefile
man/Makefile
data/Makefile
docs/Makefile
docs/doxygen/Makefile
src/public/ddcutil_macros.h
data/ddcutil.pc
],
)
dnl AC_CONFIG_FILES(package/upload_obsrpm, [chmod +x package/upload_obsrpm] )
dnl dnl AC_CONFIG_FILES(package/build_dpkg, [chmod +x package/build_dpkg] )
dnl dnl cannot chmod on build_dpkg, upload_obsrpm, since they will not exist within dpkg build environment
dnl not working, why?
# AC_DEFINE_UNQUOTED([DDCUTIL_MAJOR_VERSION], [$ddcutil_major_version], [ddcutil major version])
dnl Automake options to be applied to every Makefile.am in the tree:
dnl The effect is as if each option were listed in AUTOMAKE_OPTIONS
dnl removed -Werror from AM_INIT_AUTOMAKE to allow compilation to proceed
dnl n. first option in our list is the required automake version
AM_INIT_AUTOMAKE([1.14 -Wall -Wno-extra-portability foreign subdir-objects ])
dnl alternatively, add "silent-rules" to AM_INIT_AUTOMAKE
dnl Eclipse warns that as of 2.68, AM_SILENT_RULES takes 0 arguments
dnl but in 2.69 it only defaults to silent with argument "yes"
dnl with "yes" arg, silent rules is the default
AM_SILENT_RULES([yes])
AM_PROG_AR
dnl explicitly initialize pkg-config in case first call to pkg_check_modules is within an if test:
PKG_PROG_PKG_CONFIG
required_packages=
dnl Determines C compiler to use, sets output variable cc, ac_cv_prog_cc_c89
dnl Called by other macros, but must be called explicitly at top level for proper initialization
# AC_PROG_C99 for CENTOS 7 in OBS, EOL 6/30/2024
m4_version_prereq(2.70, [AC_PROG_CC], [AC_PROG_CC_C99])
dnl AC_PROG_LIBTOOL, AM_PROG_LIBTOOL are deprecated names for older versions of LT_INIT
dnl adds support for --enable/disable -static/shared, -with/without-pic configure flags
LT_INIT([disable-static])
dnl Automatically update libtool script if it becomes out of date:
AC_SUBST([LIBTOOL_DEPS])
###
### Version specification
###
# libtool versioning - applies to libddcutil
#
# See http://sources.redhat.com/autobook/autobook/autobook_91.html#SEC91 for details
#
# increment;
# CURRENT If the API or ABI interface has changed (reset REVISION to 0)
# REVISION If the API and ABI remains the same, but bugs are fixed.
# AGE backward compatibility (i.e. number of releases prior to current
# for which this release is backward compatible)
#
# Alternative comments:
#
# Here are a set of rules to help you update your library version
# information:
#
# 1. Start with version information of `0:0:0' for each libtool library.
# 2. Update the version information only immediately before a public
# release of your software. More frequent updates are unnecessary, and
# only guarantee that the current interface number gets larger faster.
# 3. If the library source code has changed at all since the last update,
# then increment revision (`c:r:a' becomes `c:r+1:a').
# 4. If any interfaces have been added, removed, or changed since the last
# update, increment current, and set revision to 0.
# 5. If any interfaces have been added since the last public release, then
# increment age.
# 6. If any interfaces have been removed since the last public release,
# then set age to 0.
#
# The LT_... values are used to create the argument for the --version-info parm.
# Note that this parm is processed differently depending on operating system.
# For Linux, the second and third fields in the shared object name's suffix are
# taken directly from the command line, while the first is calculated as current-age.
# For example, if LT_CURRENT=13, LT_REVISION=4, LT_AGE=4, the geneated parm
# is --version-info "13:1:4", and the generated SO name looks like xxx.so.9.4.1
dnl 7/29/19 first use, LT_CURRENT set to 1
LT_CURRENT=6
LT_REVISION=2
LT_AGE=1
AC_SUBST(LT_CURRENT)
AC_SUBST(LT_REVISION)
AC_SUBST(LT_AGE)
###
### Recognize command options for configure script
###
###
### Documented options
###
AC_MSG_NOTICE( [Checking configure command options...] )
dnl # residual setting so that Makefile.am files don't break
adl_header_dir=""
AM_CONDITIONAL([HAVE_ADL_COND], [test -n "$adl_header_dir"] )
dnl *** configure option: --enable-lib
AC_ARG_ENABLE([lib],
[ AS_HELP_STRING([--enable-lib=@<:@yes/no@:>@], [Build shared library and clients@<:@default=yes@:>@] )],
[enable_lib=${enableval}],
[enable_lib=yes] )
dnl Set flag for automake.am:
AM_CONDITIONAL([ENABLE_SHARED_LIB_COND], [test "x$enable_lib" = "xyes"] )
dnl ENABLE_SHARED_LIB_FLAG used in package/ddcutil_spec.in
AS_IF([test "x$enable_lib" = "xyes"],
AC_MSG_NOTICE( [lib... enabled] )
AC_SUBST(ENABLE_SHARED_LIB_FLAG, 1)
AC_DEFINE( [BUILD_SHARED_LIB], [1], [If defined, buid shared library.])
,
AC_MSG_NOTICE( [lib... disabled] )
AC_SUBST(ENABLE_SHARED_LIB_FLAG, 0)
)
dnl *** configure option: --install-lib-only
AC_ARG_ENABLE([install-lib-only],
[ AS_HELP_STRING([--enable-install-lib-only=@<:@yes/no@:>@], [Install only shared shared librarys@<:@default=no@:>@] )],
[enable_install_lib_only=${enableval}],
[enable_install_lib_only=no] )
AM_CONDITIONAL([INSTALL_LIB_ONLY_COND], [test "x$enable_install_lib_only" = "xyes"] )
AS_IF([test "x$enable_install_lib_only" = "xyes"],
AC_MSG_NOTICE( [install_lib_only... enabled] )
,
AC_MSG_NOTICE( [install_lib_only... disabled] )
)
AS_IF([test "x$enable_lib" = "xno" -a "x$enable_install_lib_only" = "xyes" ],
AC_MSG_ERROR( [--disable-lib contradicts --enable-install-lib-only] )
)
dnl *** configure option: --install-lib-only
AC_ARG_ENABLE([install-lib-only],
[ AS_HELP_STRING([--enable-install-lib-only=@<:@yes/no@:>@], [Install only shared shared librarys@<:@default=no@:>@] )],
[enable_install_lib_only=${enableval}],
[enable_install_lib_only=no] )
AM_CONDITIONAL([INSTALL_LIB_ONLY_COND], [test "x$enable_install_lib_only" = "xyes"] )
AS_IF([test "x$enable_install_lib_only" = "xyes"],
AC_MSG_NOTICE( [install_lib_only... enabled] )
,
AC_MSG_NOTICE( [install_lib_only... disabled] )
)
AS_IF([test "x$enable_lib" = "xno" -a "x$enable_install_lib_only" = "xyes" ],
AC_MSG_ERROR( [--disable-lib contradicts --enable-install-lib-only] )
)
dnl *** configure option: --enable-envcmds
AC_ARG_ENABLE([envcmds],
[ AS_HELP_STRING([--enable-envcmds=@<:@yes/no@:>@], [Include environment and usbenvironment@<:@default=yes@:>@] )],
[enable_envcmds=${enableval}],
[enable_envcmds=yes] )
AS_IF([test "x$enable_envcmds" = "xyes"],
AC_MSG_NOTICE( [envcmds... enabled (provisional) ] )
,
AC_MSG_NOTICE( [envcmds... disabled] )
)
dnl *** configure option: --enable-udev
AC_ARG_ENABLE([udev],
[ AS_HELP_STRING([--enable-udev=@<:@yes/no@:>@], [Use UDEV@<:@default=yes@:>@] )],
[enable_udev=${enableval}],
[enable_udev=yes] )
dnl AS_IF([test "x$enable_udev" = "xyes"],
dnl AC_MSG_NOTICE( [udev... enabled (provisional) ] )
dnl ,
dnl AC_MSG_NOTICE( [udev... disabled] )
dnl )
dnl *** configure option: --enable-usb
AC_ARG_ENABLE([usb],
[ AS_HELP_STRING( [--enable-usb=@<:@yes/no@:>@], [Support USB connected displays@<:@default=yes@:>@] )],
[enable_usb=${enableval}],
[enable_usb=yes] )
AS_IF([test "x$enable_usb" = "xyes"],
AC_MSG_NOTICE( [usb... enabled (provisional) ] )
,
AC_MSG_NOTICE( [usb... disabled] )
)
dnl *** configure option: --enable-drm
AC_ARG_ENABLE([drm],
[ AS_HELP_STRING( [--enable-drm=@<:@yes/no@:>@], [Use DRM in diagnostics@<:@default=yes@:>@] )],
[enable_drm=${enableval}],
[enable_drm=yes] )
AS_IF([test "x$enable_drm" = "xyes"],
AC_MSG_NOTICE( [drm... enabled (provisional) ] )
,
AC_MSG_NOTICE( [drm... disabled] )
)
dnl *** configure option: --enable-x11
AC_ARG_ENABLE([x11],
[ AS_HELP_STRING( [--enable-x11=@<:@no/yes@:>@], [Deprecated option X11 ignored.] )],
[enable_x11=${enableval}],
[enable_x11=yes] )
enable_x11=no
AS_IF([test "x$enable_x11" = "xyes"],
AC_MSG_NOTICE( [x11... Deprecated option ignored] ),
AC_MSG_NOTICE( [x11... disabled] )
)
dnl *** configure option: --enable-static-functions-visible
AC_ARG_ENABLE([static-functions-visible],
[ AS_HELP_STRING( [--enable-static-functions-visible=@<:@no/yes@:>@], [Remove static qualifier from function names)@<:@default=no@:>@] )],
[enable_static_functions_visible=${enableval}],
[enable_static_functions_visible=no] )
AM_CONDITIONAL([STATIC_FUNCTIONS_VISIBLE_COND], [test "x$enable_static_functions_visible" = "xyes"] )
AS_IF( [test "x$enable_static_functions_visible" = "xyes"],
AC_DEFINE( [STATIC_FUNCTIONS_VISIBLE], [1], [If defined, remove static qualifier from function declarations.])
AC_MSG_NOTICE( [static_functions_visible...enabled] )
,
AC_MSG_NOTICE( [static_functions_visible...disabled] )
)
dnl *** configure option: --enable-asan
AC_ARG_ENABLE([asan],
[ AS_HELP_STRING( [--enable-asan=@<:@no/yes@:>@], [Build for asan (address sanitizer)@<:@default=no@:>@] )],
[enable_asan=${enableval}],
[enable_asan=no] )
AM_CONDITIONAL([ASAN_COND], [test "x$enable_asan" = "xyes"] )
AS_IF( [test "x$enable_asan" = "xyes"],
AC_DEFINE( [WITH_ASAN], [1], [If defined, building for Asan instrumentation.])
AC_MSG_NOTICE( [asan..........enabled] )
,
AC_MSG_NOTICE( [asan..........disabled] )
)
dnl dnl *** configure option: --enable-trace
dnl AC_ARG_ENABLE([trace],
dnl [ AS_HELP_STRING( [--enable-trace=@<:@yes/no@:>@], [Output trace messages@<:@default=yes@:>@] )],
dnl [enable_trace=${enableval}],
dnl [enable_trace=yes] )
dnl AS_IF([test "x$enable_trace" = "xyes"],
dnl AC_MSG_NOTICE( [trace... enabled] )
dnl AC_DEFINE([ENABLE_TRACE], [1], [If defined, enable trace messages.])
dnl ,
dnl AC_MSG_NOTICE( [TRACE... disabled] )
dnl )
dnl *** configure option: --enable-targetbsd
AC_ARG_ENABLE([targetbsd],
[ AS_HELP_STRING([--enable-targetbsd=@<:@no/yes@:>@], [Build for BSD@<:@default=no@:>@ (Developer-only)] )],
[enable_targetbsd=${enableval}],
[enable_targetbsd=no] )
dnl *** configure option: --enable-doxygen
AC_ARG_ENABLE([doxygen],
[ AS_HELP_STRING( [--enable-doxygen=@<:@no/yes@:>@], [Build API documentation using Doxygen (if it is installed)@<:@default=no@:>@ (Developer-only)] )],
[enable_doxygen=${enableval}],
[enable_doxygen=no] )
AM_CONDITIONAL([ENABLE_DOXYGEN_COND], [test "x$enable_doxygen" = "xyes"] )
AS_IF([test "x$enable_doxygen" = "xyes"],
AC_MSG_NOTICE( [doxygen... enabled] )
,
AC_MSG_NOTICE( [doxygen... disabled] )
)
###
### Resolve choices for public options
###
AC_MSG_NOTICE( [Resolving options...] )
dnl --enable-targetbsd => --disable-envcmds, --disable-usb, --disable-udev
AS_IF([test "x$enable_targetbsd" = "xyes" -a "x$enable_envcmds" = "xyes" ],
[ AC_MSG_NOTICE( [--enable-targetbsd forces --disable-envcmds] )
enable_envcmds=no
]
)
AS_IF([test "x$enable_targetbsd" = "xyes" -a "x$enable_udev" = "xyes" ],
[ AC_MSG_NOTICE( [--enable-targetbsd forces --disable-udev] )
enable_udev=no
]
)
AS_IF([test "x$enable_targetbsd" = "xyes" -a "x$enable_usb" = "xyes" ],
[ AC_MSG_NOTICE( [--enable-targetbsd forces --disable-usb] )
enable_usb=no
]
)
AS_IF([test "x$enable_udev" != "xyes" -a "x$enable_usb" = "xyes" ],
[ AC_MSG_NOTICE( [--disable-udev forces --disable-usb] )
enable_usb=no
]
)
# --enable-install-lib-only => --disable-envcmds
AS_IF([test "x$enable_install_lib_only" = "xyes" -a "x$enable_envcmds" = "xyes" ],
[ AC_MSG_NOTICE( [--enable-install-lib-only forces --disable-envcmds] )
enable_envcmds=no
]
)
# --disable-envcmds => --disable-drm, --disable-x11
AS_IF([test "x$enable_envcmds" != "xyes" -a "x$enable_drm" = "xyes" ],
[ AC_MSG_NOTICE( [--disable-envcmds forces --disable-drm] )
enable_drm=no
]
)
AS_IF([test "x$enable_envcmds" != "xyes" -a "x$enable_x11" = "xyes" ],
[ AC_MSG_NOTICE( [--disable-envcmds forces --disable-x11] )
enable_x11=no
]
)
###
### Report resolved options and set conditionals, substitutions, and defines
###
AM_CONDITIONAL([ENABLE_TARGETBSD_COND], [test "x$enable_targetbsd" = "xyes"] )
AS_IF([test "x$enable_targetbsd" = "xyes"],
AC_MSG_NOTICE( [targetbsd... enabled] )
AC_DEFINE( [TARGET_BSD], [1], [If defined, building for BSD.])
AC_SUBST(ENABLE_TARGETBSD_FLAG, 1)
,
AC_MSG_NOTICE( [targetbsd... disabled] )
AC_SUBST(ENABLE_TARGETBSD_FLAG, 0)
AC_DEFINE( [TARGET_LINUX], [1], [If defined, building for Linux.])
)
AM_CONDITIONAL([ENABLE_ENVCMDS_COND], [test "x$enable_envcmds" = "xyes"] )
AS_IF([test "x$enable_envcmds" = "xyes"],
AC_MSG_NOTICE( [envcmds... enabled] )
AC_DEFINE( [ENABLE_ENVCMDS], [1], [If defined, enable environment commands.])
AC_SUBST(ENABLE_ENVCMDS_FLAG, 1)
,
AC_MSG_NOTICE( [envcmds... disabled] )
AC_SUBST(ENABLE_ENVCMDS_FLAG, 0)
)
AM_CONDITIONAL([ENABLE_UDEV_COND], [test "x$enable_udev" = "xyes"] )
AS_IF([test "x$enable_udev" = "xyes"],
AC_MSG_NOTICE( [udev... enabled] )
AC_DEFINE( [ENABLE_UDEV], [1], [If defined, use UDEV.])
AC_SUBST(ENABLE_UDEV_FLAG, 1)
,
AC_MSG_NOTICE( [udev... disabled] )
AC_SUBST(ENABLE_UDEV_FLAG, 0)
)
AM_CONDITIONAL([ENABLE_USB_COND], [test "x$enable_usb" = "xyes"] )
AS_IF([test "x$enable_usb" = "xyes"],
AC_DEFINE( [ENABLE_USB], [1], [If defined, enable USB communication.])
AC_SUBST( ENABLE_USB_FLAG, [1] )
AC_MSG_NOTICE( [usb... enabled] )
,
AC_SUBST( ENABLE_USB_FLAG, [0] )
AC_MSG_NOTICE( [usb... disabled] )
)
AS_IF([test "x$enable_x11" = "xyes"],
AC_MSG_NOTICE( [x11... enabled] )
,
AC_MSG_NOTICE( [x11... disabled] )
)
### Private options
dnl dnl *** configure option: --enable-yaml
dnl AC_ARG_ENABLE([yaml],
dnl [ AS_HELP_STRING( [--enable-yaml=@<:@no/yes@:>@], [Enable YAML for external file parsing @<:@default=no@:>@] )],
dnl [enable_yaml=${enableval}],
dnl [enable_yaml=no] )
dnl AM_CONDITIONAL([ENABLE_YAML_COND], [test "x$enable_yaml" = "xyes"] )
dnl AS_IF([test "x$enable_yaml" = "xyes"],
dnl AC_DEFINE( [ENABLE_YAML], [1], [Enable YAML for parsing.])
dnl AC_MSG_NOTICE( [yaml... enabled] )
dnl ,
dnl AC_MSG_NOTICE( [yaml... disabled] )
dnl )
dnl *** configure option: --enable-testcases
AC_ARG_ENABLE([testcases],
[ AS_HELP_STRING( [--enable-testcases=@<:@no/yes@:>@], [Include test cases @<:@default=no@:>@] (Developer-only) )],
[include_testcases=${enableval}],
[include_testcases=no] )
AM_CONDITIONAL([INCLUDE_TESTCASES_COND], [test "x$include_testcases" = "xyes"] )
AS_IF([test "x$include_testcases" = "xyes"],
AC_DEFINE( [INCLUDE_TESTCASES], [1], [If defined, build with test cases.])
AC_MSG_NOTICE( [testcases... enabled] )
,
AC_MSG_NOTICE( [testcases... disabled] )
)
dnl *** configure option: --enable-callgraph
AC_ARG_ENABLE([callgraph],
[ AS_HELP_STRING( [--enable-callgraph=@<:@no/yes@:>@], [Create .expand files for static call graph@<:@default=no@:>@] (Developer-only) )],
[enable_callgraph=${enableval}],
[enable_callgraph=no] )
AM_CONDITIONAL([ENABLE_CALLGRAPH_COND], [test "x$enable_callgraph" = "xyes"] )
AS_IF([test "x$enable_callgraph" = "xyes"],
AC_MSG_NOTICE( [callgraph... enabled] ),
AC_MSG_NOTICE( [callgraph... disabled] )
)
dnl *** configure option: --enable-failsim
AC_ARG_ENABLE([failsim],
[ AS_HELP_STRING( [--enable-failsim=@<:@no/yes@:>@], [Build with failure simulation@<:@default=no@:>@ (Developer-only)] )],
[enable_failsim=${enableval}],
[enable_failsim=no] )
AM_CONDITIONAL([ENABLE_FAILSIM_COND], [test "x$enable_failsim" = "xyes"] )
AS_IF( [test "x$enable_failsim" = "xyes"],
AC_DEFINE( [ENABLE_FAILSIM], [1], [If defined, enable failsim.])
AC_MSG_NOTICE( [failsim..... enabled] )
,
AC_MSG_NOTICE( [failsim..... disabled] )
)
dnl *** configure option: --enable-force-suse
AC_ARG_ENABLE([force-suse],
[ AS_HELP_STRING( [--enable-force-suse=@<:@no/yes@:>@], [Force SUSE target directories@<:@default=no@:>@ (Developer-only)] )],
[enable_force_suse=${enableval}],
[enable_force_suse=no] )
AM_CONDITIONAL([ENABLE_FORCE_SUSE_COND], [test "x$enable_force_suse" = "xyes"] )
AS_IF( [test "x$enable_force_suse" = "xyes"],
AC_DEFINE( [ENABLE_FORCE_SUSE], [1], [If defined, force SUSE target directories.])
AC_MSG_NOTICE( [force-suse....enabled] )
,
AC_MSG_NOTICE( [force-suse....disabled] )
)
dnl Note to self: use autoheader to regenerate config.h.in whenever new defines added
###
### Checks for typedefs, structures, and compiler characteristics.
###
AC_CHECK_HEADER_STDBOOL
AC_C_INLINE
AC_C_BIGENDIAN
AC_TYPE_SIZE_T
AC_TYPE_SSIZE_T
AC_TYPE_UINT16_T
AC_TYPE_UINT32_T
AC_TYPE_UINT8_T
###
### Checks for standard library functions.
###
AC_FUNC_MALLOC
AC_FUNC_REALLOC
AC_FUNC_STRERROR_R
AC_CHECK_FUNCS([clock_gettime memset nl_langinfo stpcpy strchr strdup strerror strrchr strtol])
dnl The dlopen() function is in the C library for *BSD and in
dnl libdl on GLIBC-based systems
AC_SEARCH_LIBS([dlopen], [dl dld], [], [
AC_MSG_ERROR([unable to find the dlopen() function])
])
###
### Checks for header files.
###
AC_CHECK_HEADERS([fcntl.h langinfo.h libintl.h limits.h stdint.h stdlib.h string.h sys/ioctl.h termios.h unistd.h wchar.h dlfcn.h execinfo.h])
dnl i2c-dev.h is in linux-headers
dnl i2c-dev.h not found:
dnl AC_CHECK_HEADERS([i2c-dev.h])
dnl dnl libi2c and libi2c-dev have no .pc files. Check for header file instead.
dnl AC_CHECK_HEADER( [i2c/smbus.h],
dnl AC_MSG_NOTICE( [header file i2c/smbus.h found.] ),
dnl AC_MSG_ERROR( [libi2c development package (e.g. libi2c-dev, name varies by distribution) >= 4.0 required.] )
dnl )
###
### Required library tests
###
dnl Notes on pkg_check_modules:
dnl 1) appends to xxx_CFLAGS and xxx_LIBS the output of pkg-config --cflags|--libs
dnl 2) if no action-if-false branch defined, pkg_check_modules terminates execution if not found
dnl 9/2017: need >= 2.32 for g_thread_...() functions
PKG_CHECK_MODULES(GLIB, glib-2.0 >= 2.40)
required_packages="$required_packages glib-2.0 >= 2.40"
PKG_CHECK_MODULES(JANSSON, jansson >= 2.0)
required_packages="$required_packages jansson >= 2.0"
AS_IF( [test "x$enable_udev" = "xyes" ],
[ PKG_CHECK_MODULES(UDEV, libudev,
[ libudev_found=1],
[ libudev_found=0
AC_MSG_NOTICE( [The package providing libudev.h varies by Linux distribution and release.] )
AC_MSG_NOTICE( [It may be a udev specific package, e.g. libudev-dev, libudev-devel] )
AC_MSG_NOTICE( [or it may be part of systemd, e.g systemd-devel] )
AC_MSG_ERROR( [libudev not found] )
] )
]
,
)
dnl required_packages="$required_packages xrandr x11"
dnl how to handle libudev? punt for now
###
### Optional library tests
###
dnl TODO: use consistent pattern
### libusb
dnl know that 1.0.8 fails, 1.0.20 works
AS_IF([test "x$enable_usb" = "xyes"],
[ PKG_CHECK_MODULES(LIBUSB, libusb-1.0 >= 1.0.15, [libusb_found=yes] ) ],
[ AC_MSG_NOTICE( [usb disabled, not checking for libusb] ) ]
)
dnl Logically, these debug messages belong within the $enable_usb test, but the
dnl nested brackests make the code hard to read. It's LISP all over again.
AS_IF( [test 0$DBG -ne 0],
[
AC_MSG_NOTICE( [LIBUSB_CFLAGS: $LIBUSB_CFLAGS] )
AC_MSG_NOTICE( [LIBUSB_LIBS: $LIBUSB_LIBS] )
])
### libdrm
AS_IF([test "x$enable_drm" = "xyes"],
[ PKG_CHECK_MODULES(LIBDRM, libdrm >= 2.4.67,
[libdrm_found=yes],
[libdrm_found=no
AC_MSG_WARN( [libdrm >= 2.4.67 not found. Forcing --disable-drm])
enable_drm=no
]
)
],
[ AC_MSG_NOTICE( [drm disabled, not checking for libdrm] ) ]
)
AM_CONDITIONAL([USE_LIBDRM_COND], [test "x$enable_drm" = "xyes"] )
AS_IF([test "x$enable_drm" = "xyes"],
AC_DEFINE([USE_LIBDRM], [1], [Use libdrm])
AC_MSG_NOTICE( [drm... enabled] )
,
AC_MSG_NOTICE( [drm... disabled] )
)
AS_IF( [test 0$DBG -ne 0],
[
AC_MSG_NOTICE( [LIBDRM_CFLAGS: $LIBDRM_CFLAGS] )
AC_MSG_NOTICE( [LIBDRM_LIBS: $LIBDRM_LIBS] )
])
dnl ### libyaml
dnl dnl PKG_CHECK_MODULES(YAML, yaml-0.1)
dnl
dnl AS_IF([test "x$enable_yaml" = "xyes"],
dnl [ PKG_CHECK_MODULES(YAML, yaml-0.1,
dnl [libyaml_found=yes],
dnl [libyaml_found=no
dnl AC_MSG_WARN( [yaml-0.1 not found. Forcing --disable-yaml])
dnl enable_yaml=no
dnl ]
dnl )
dnl ],
dnl [ AC_MSG_NOTICE( [yaml disabled, not checking for libyaml] ) ]
dnl )
dnl
dnl AM_CONDITIONAL([ENABLE_YAML_COND], [test "x$enable_yaml" = "xyes"] )
dnl AS_IF([test "x$enable_yaml" = "xyes"],
dnl AC_DEFINE([ENABLE_YAML], [1], [Use yaml])
dnl AC_MSG_NOTICE( [yaml... enabled] )
dnl ,
dnl AC_MSG_NOTICE( [yaml... disabled] )
dnl )
dnl
dnl AS_IF( [test 0$DBG -ne 0],
dnl [
dnl AC_MSG_NOTICE( [YAML_CFLAGS: $YAML_CFLAGS] )
dnl AC_MSG_NOTICE( [YAML_LIBS: $YAML_LIBS] )
dnl ])
### X11
dnl PKG_CHECK_MODULES(XRANDR, xrandr)
dnl PKG_CHECK_MODULES(X11, x11)
dnl Duplicate of next section?
dnl TODO: disable if enable-envcmds is false?
dnl Force disable of options if environment commands disabled
AS_IF([test "x$enable_x11" = "xyes"],
[ PKG_CHECK_MODULES(LIBX11, x11)
PKG_CHECK_MODULES(XRANDR, xrandr)
PKG_CHECK_MODULES(XEXT, xext)
])
AM_CONDITIONAL([USE_X11_COND], [test "x$enable_x11" = "xyes"] )
AS_IF([test "x$enable_x11" = "xyes"],
AC_DEFINE([USE_X11], [1], [Use X11])
AC_MSG_NOTICE( [x11... enabled] )
,
AC_MSG_NOTICE( [x11... disabled] )
)
dnl AS_IF([test "x$enable_x11" = "xyes"],
dnl [ PKG_CHECK_MODULES(XRANDR, xrandr)
dnl ])
dnl Note cflags and libs, but don't need to use in makefiles
AS_IF( [test 0$DBG -ne 0],
[
AC_MSG_NOTICE( [LIBX11_CFLAGS: $LIBX11_CFLAGS] )
AC_MSG_NOTICE( [LIBX11_LIBS: $LIBX11_LIBS] )
])
### DOXYGEN
dnl AC_MSG_NOTICE([Start of DOXYGEN])
dnl AS_IF( [test "x$enable_doxygen" = "xyes"],
dnl AC_MSG_NOTICE( [doxygen... enabled] )
dnl ,
dnl AC_MSG_NOTICE( [doxygen... disabled] )
dnl )
AS_IF([test "x$enable_doxygen" = "xyes"],
[
dnl checks for doxygen program, sets or uses environment variable DOXYGEN
AC_MSG_NOTICE([Checking for Doxygen...])
FLM_PROG_TRY_DOXYGEN
AS_IF( [test -n $DOXYGEN],
[
AC_MSG_NOTICE([Calling dx_init_doxygen...])
DX_PDF_FEATURE(ON)
DX_HTML_FEATURE(ON)
DX_INIT_DOXYGEN(ddcutil)
AS_IF( [test 0$DBG -ne 0],
[
AC_MSG_NOTICE([Set by dx_init_doxygen:])
AC_MSG_NOTICE([ DOXYGEN: $DOXYGEN ])
AC_MSG_NOTICE([ dx_DOT_FEATURE: $DX_DOT_FEATURE ])
AC_MSG_NOTICE([ dx_FEATURE_doc $DX_FEATURE_doc ])
AC_MSG_NOTICE([ dx_DOXYGEN_FEATURE: $DX_DOXYGEN_FEATURE ])
AC_MSG_NOTICE([ dx_HTML_FEATURE: $DX_HTML_FEATURE ])
AC_MSG_NOTICE([ dx_FLAG_html: $DX_FLAG_HTML ])
AC_MSG_NOTICE([ dx_PDF_FEATURE: $DX_PDF_FEATURE ])
AC_MSG_NOTICE([ DX_PROJECT: $DX_PROJECT ])
AC_MSG_NOTICE([ DX_CONFIG: $DX_CONFIG ])
AC_MSG_NOTICE([ DX_DOCDIR: $DX_DOCDIR ])
])
AC_CONFIG_FILES( [docs/doxygen/doxyfile] )
]
,
[
AC_MSG_NOTICE([doxygen not found])
enable_doxygen=no
]
)
]
,
[
AC_MSG_NOTICE([doxygen disabled, not checking for Doxygen])
]
)
dnl AC_MSG_NOTICE([enable_doxygen = ${enable_doxygen}])
dnl AM_CONDITIONAL( [HAVE_DOXYGEN], [test -n "$DOXYGEN"] )
dnl AM_CONDITIONAL( [USE_DOXYGEN], [test -n "$DOXYGEN" -a "x$enable_doxygen" = "xyes"])
AM_CONDITIONAL( [USE_DOXYGEN], [test "x$enable_doxygen" = "xyes"])
AM_COND_IF([USE_DOXYGEN],
AC_MSG_NOTICE([USE_DOXYGEN is set])
,
AC_MSG_NOTICE([USE_DOXYGEN not set])
)
### DOC-BASE
dnl n. doc-base is Debian specific
dnl doc-base does not have pc file.
AC_CHECK_PROGS( [DOCBASE_INSTALL_DOCS], [install-docs])
AS_IF( [test -n "$DOCBASE_INSTALL_DOCS"],
AC_MSG_NOTICE([doc-base execuable found])
AC_CONFIG_FILES([docs/ddcutil-c-api]),
AC_MSG_WARN([doc-base not installed - continuing without doc-base support])
)
AM_CONDITIONAL( [HAVE_DOCBASE], [test -n "$DOCBASE_INSTALL_DOCS"])
### Library
AS_IF([test "x$enable_lib" = "xyes"],
[ PKG_CHECK_MODULES(ZLIB, zlib) ],
)
AS_IF( [test "x$enable_asan" = "xyes"], [
required_packages="asan $required_packages"
# has no effect on $CFLAGS
CFLAGS="$CFLAGS -fsanitize=address"
CFLAGS="$CFLAGS -fsanitize-address-use-after-scope -fno-omit-frame-pointer"
])
dnl AC_MSG_NOTICE([======================== required_packages: $required_packages])
AC_SUBST(REQUIRED_PACKAGES,$required_packages)
### Opsys variability
dnl Fails: if building in OBS, SUSE is in /proc/version, even when building for Fedora
dnl TODO: do not modify if explicitly set
dnl AC_MSG_NOTICE([Original docdir: ${docdir}])
dnl AS_IF( [ grep SUSE /proc/version ], [
dnl AC_MSG_NOTICE( [IS SUSE])
dnl docdir=\${datarootdir}/doc/packages/\${PACKAGE_TARNAME}
dnl ], [
dnl AC_MSG_NOTICE( [NOT SUSE] )
dnl ] )
dnl AC_MSG_NOTICE([======> Tests for SUSE target:])
dnl test using [ grep SUSE /proc/version ]
dnl always tests true on OBS, i.e reports the OS on which the build system is running, not the target os
dnl test using [ ls -d /usr/share/doc/packages ]
dnl always tests true on OBS
dnl test using [test "x$enable_force_suse" = "xyes"], i.e. enable-force_suse parm passed to configure
dnl works
dnl test using [ grep suse /etc/os-release ]
dnl successfully detects target OS when run on OBS
dnl test using [lsb-release -i | grep SUSE ]
dnl on OBS, command not found
AC_MSG_CHECKING( [target OS using /etc/os-release] )
AS_IF( [ grep suse /etc/os-release > /dev/null], [
AC_MSG_RESULT( [target is SUSE])
docdir=\${datarootdir}/doc/packages/\${PACKAGE_TARNAME}
AC_MSG_NOTICE( [..Forcing docdir to ${docdir}] )
], [
AC_MSG_RESULT( [target is not SUSE ] )
] )
###
### Generate output
###
dnl called once at end of configure.ac, generates and runs config.status
AC_OUTPUT
dnl a brief summary
AC_MSG_RESULT([
ddcutil $VERSION
version suffix: ddcutil_version_suffix
=============
libtool version ${LT_CURRENT}:${LT_REVISION}:${LT_AGE}
prefix: ${prefix}
exec_prefix: ${exec_prefix}
libexecdir: ${libexecdir}
bindir: ${bindir}
libdir: ${libdir}
datarootdir: ${datarootdir}
datadir: ${datadir}
docdir: ${docdir}
mandir: ${mandir}
includedir: ${includedir}
pkgconfigdir: ${pkgconfigdir}
required_packages: ${required_packages}
enable_lib: ${enable_lib}
enable_install_lib_only ${enable_install_lib_only}
enable_envcmds ${enable_envcmds}
enable_udev ${enable_udev}
enable_usb: ${enable_usb}
enable_drm: ${enable_drm}
enable_x11: ${enable_x11}
dnl enable_trace: ${enable_trace}
enable_asan: ${enable_asan}
enable_static_functions_visible: ${enable_static_functions_visible}
Developer-only options:
enable_targetbsd: ${enable_targetbsd}
enable_doxygen: ${enable_doxygen}
enable_failsim: ${enable_failsim}
include_testcases: ${include_testcases}
compiler: ${CC}
CFLAGS: ${CFLAGS}
CPPFLAGS: ${CPPFLAGS}
LDFLAGS: ${LDFLAGS}
])
dnl cat config.h