configure.ac - external/liblouis-github - Git at Google

 # Process this file with autoconf to produce a configure script.

 AC_PREREQ(2.68)
 AC_INIT([Liblouis], [3.24.0], [liblouis-liblouisxml@freelists.org], [liblouis], [http://www.liblouis.org])
 AC_CONFIG_SRCDIR([liblouis/lou_backTranslateString.c])
 AM_CONFIG_HEADER(liblouis/config.h)

 AC_CONFIG_AUX_DIR([build-aux])
 AC_CONFIG_MACRO_DIR([m4])
 AM_INIT_AUTOMAKE([-Wall dist-zip])

 # Checks for programs.
 AC_PROG_CC

 # gnulib for the library
 gl_EARLY
 # gnulib for the tools
 gl_tools_EARLY

 gl_INIT
 gl_tools_INIT

 # Checks for more programs.
 AC_PROG_INSTALL
 AC_PROG_LN_S
 AC_PROG_MAKE_SET
 AM_PROG_AR

 # Check if the user wants to enable yaml tests
 AC_ARG_WITH([yaml],
   [AS_HELP_STRING([--with-yaml], [enable YAML-based tests @<:@default=yes@:>@])],
   [with_yaml=$withval],
   [])

 # Check if the user wants to enable coverage
 AC_ARG_WITH([coverage],
     [AS_HELP_STRING([--with-coverage], [enable clang coverage in the fuzzer tests (also add coverage to lib sources) @<:@default=no@:>@])],
     [])

 # Check if the user wants to compile fuzzer
 AC_ARG_WITH([fuzzer],
     [AS_HELP_STRING([--with-fuzzer], [enable fuzzer for function lou_translateString @<:@default=no@:>@])],
     [])

 # Checks for libraries.
 if test "x$with_yaml" == xno; then
   AC_DEFINE([WITHOUT_YAML],[1],[Disable YAML tests])
 else
   AC_CHECK_LIB([yaml], [yaml_parser_initialize])
 fi

 AM_CONDITIONAL([WITH_YAML], [test "x$ac_cv_lib_yaml_yaml_parser_initialize" == xyes -a "x$with_yaml" != xno])

 # If libyaml is missing warn or die depending on --with-yaml
 if test x$ac_cv_lib_yaml_yaml_parser_initialize != xyes; then
   case "$with_yaml" in
   yes) AC_MSG_ERROR([--with-yaml was given, but libyaml was not found]);;
   no) ;;
   *) AC_MSG_WARN([libyaml was not found. YAML tests will be skipped]);;
   esac
 fi

 # Check for coverage
 AM_CONDITIONAL(USE_COVERAGE, [test x"$with_coverage" = xyes])

 # Check for fuzzer
 AC_MSG_CHECKING([whether to enable fuzzer])
 AS_IF([test "x$with_fuzzer" = "xyes" && test "$CC" = "clang" && test "$CXX" = "clang++"], AC_MSG_RESULT([yes]), AC_MSG_RESULT([no]))
 AM_CONDITIONAL(USE_FUZZER, [test "x$with_fuzzer" = "xyes" && test "$CC" = "clang" && test "$CXX" = "clang++"])

 # Checks for header files.
 AC_HEADER_STDC
 AC_CHECK_HEADERS([stddef.h stdlib.h string.h])

 # Checks for typedefs, structures, and compiler characteristics.
 AC_C_CONST

 # Checks for library functions.
 AC_FUNC_MEMCMP
 AC_FUNC_VPRINTF
 AC_CHECK_FUNCS([memset])

 # This is for stuff that absolutely must end up in pyconfig.h.
 # Please use pyport.h instead, if possible.
 AH_TOP([
 #ifndef LOUISCFG_H
 #define LOUISCFG_H
 ])
 AH_BOTTOM([
 #endif /*LOUISCFG_H*/
 ])

 # increment if the interface has additions, changes, removals.
 LIBLOUIS_CURRENT=20

 # increment any time the source changes; set to 0 if you increment
 # CURRENT
 LIBLOUIS_REVISION=12

 # increment if any interfaces have been added; set to 0 if any
 # interfaces have been changed or removed. removal has precedence over
 # adding, so set to 0 if both happened.
 LIBLOUIS_AGE=0

 AC_SUBST(LIBLOUIS_CURRENT)
 AC_SUBST(LIBLOUIS_REVISION)
 AC_SUBST(LIBLOUIS_AGE)

 # needed to build the liblouis.def
 DLL_VERSION=`expr ${LIBLOUIS_CURRENT} - ${LIBLOUIS_AGE}`
 AC_SUBST(DLL_VERSION)

 AC_ISC_POSIX
 AC_HEADER_STDC
 AC_LIBTOOL_WIN32_DLL
 AC_PROG_LIBTOOL

 # catch as many warnings as possible with the help of the gnulib manywarnings module
 gl_MANYWARN_ALL_GCC([warnings])
 # Set up the list of the pointless, undesired warnings.
 nw=
 nw="$nw -Wsystem-headers"       # Don't let system headers trigger warnings
 nw="$nw -Wsuggest-attribute=pure"   # ignore recommendations to use
 nw="$nw -Wsuggest-attribute=format" # attributes, most of these only
 nw="$nw -Wsuggest-attribute=const"  # work in gcc
 nw="$nw -Wsuggest-attribute=noreturn"
 # Enable all GCC warnings not in this list.
 gl_MANYWARN_COMPLEMENT([warnings], [$warnings], [$nw])
 for w in $warnings; do
   gl_WARN_ADD([$w])
 done

 # define an additional recursive make target to format the sources.
 # Also check if clang-format is installed
 AM_EXTRA_RECURSIVE_TARGETS([format-sources])
 # prefer version 14 of clang-format as it is part of Ubuntu 22.04 LTS
 AC_CHECK_PROGS([SOURCE_FORMATTER], [clang-format-14 clang-format])
 AM_CONDITIONAL([HAVE_SOURCE_FORMATTER], [test x$SOURCE_FORMATTER = xclang-format -o x$SOURCE_FORMATTER = xclang-format-14])

 # GNU help2man creates man pages from --help output; in many cases,
 # this is sufficient, and obviates the need to maintain man pages
 # separately. However, some developers do not have it so we do not
 # make its use mandatory.
 if test "x$cross_compiling" = xyes; then
   AC_MSG_WARN([cannot generate manual pages while cross compiling])
 else
   AC_CHECK_PROG([HELP2MAN], [help2man], [help2man])
 fi
 AM_CONDITIONAL([HAVE_HELP2MAN], [test x$HELP2MAN = xhelp2man])

 # Only run parts of the tests if we are cross compiling
 AM_CONDITIONAL([CROSS_COMPILING], [test "x$cross_compiling" = xyes])

 # Check for makeinfo version >= 5, required for building documentation.
 have_makeinfo_5=false
 AC_PROG_SED
 AC_CHECK_PROG([MAKEINFO_FOUND], [makeinfo], [yes])
 if test x"${MAKEINFO_FOUND}" = xyes
 then
   MAKEINFO_VERSION_REQ=5
   AC_MSG_CHECKING([for makeinfo version >= $MAKEINFO_VERSION_REQ])
   MAKEINFO_VERSION=`makeinfo --version | sed -ne 's/^\(makeinfo\|texi2any\) .* \([[0-9]][[0-9]]*\)\.[[0-9]][[0-9]]*.*$/\2/p'`
   if test x$MAKEINFO_VERSION = x -o 0$MAKEINFO_VERSION -lt $MAKEINFO_VERSION_REQ
   then
     AC_MSG_RESULT([no])
     AC_MSG_WARN([Program 'makeinfo' version >= $MAKEINFO_VERSION_REQ is required. Documentation will not be built.])
   else
     AC_MSG_RESULT([yes])
     have_makeinfo_5=true
   fi
 else
   AC_MSG_WARN([Missing program 'makeinfo', Documentation will not be built. Please install you you want documentation or refer to online resources.])
 fi
 AM_CONDITIONAL([HAVE_MAKEINFO_5], [test x$have_makeinfo_5 = xtrue])

 # Check if the user wants to enable macros.
 # Macros are an experimental feature and need to be enabled
 # explicitely. They are a helpful tool for refactoring, but for now we
 # don't want to expose it to users yet.
 AC_ARG_ENABLE([macros],
   [AS_HELP_STRING([--enable-macros], [enable macros @<:@default=no@:>@])],
   [enable_macros=$enableval],
   [])

 if test "x$enable_macros" == xyes; then
    AC_DEFINE([ENABLE_MACROS],[1],[Enable macros])
 fi
 AM_CONDITIONAL([ENABLE_MACROS], [test "x$enable_macros" = xyes])

 AC_ARG_ENABLE(ucs4,
               AC_HELP_STRING(--enable-ucs4, enable 4 byte-wide characters),
               [AC_DEFINE([WIDECHARS_ARE_UCS4], [1], [Define if widechars are ucs4])],
               [enable_ucs4=no])

 AC_MSG_CHECKING([whether 4 byte-wide characters should be supported])
 AC_MSG_RESULT($enable_ucs4)

 case "$enable_ucs4" in
 yes) WIDECHAR_TYPE='unsigned int';;
 *) WIDECHAR_TYPE='unsigned short int';;
 esac
 AC_SUBST(WIDECHAR_TYPE)
 AM_CONDITIONAL([HAVE_UCS4], [test x$enable_ucs4 = xyes])

 case $host in
   *mingw* | *cygwin*)
     CFLAGS="$CFLAGS -Wl,--add-stdcall-alias"
     LDFLAGS="$LDFLAGS -avoid-version"
   ;;
 esac

 AC_CANONICAL_HOST
 build_macosx=no
 case $host_os in
   darwin*)
     build_macosx=yes
   ;;
 esac
 AM_CONDITIONAL([OSX], [test "$build_macosx" = "yes"])

 AC_CONFIG_FILES([
 	Makefile
 	doc/Makefile
 	man/Makefile
 	liblouis/Makefile
 	liblouis/liblouis.h
 	windows/Makefile
 	windows/include/Makefile
 	windows/utils/Makefile
 	tables/Makefile
 	liblouis.pc
 	tests/Makefile
 	tests/braille-specs/Makefile
 	tests/resolve_table.h
 	tests/tables/Makefile
 	tests/tables/emphclass/Makefile
 	tests/tables/attribute/Makefile
 	tests/tables/moreTables/Makefile
 	tests/tables/resolve_table/Makefile
 	tests/tables/resolve_table/dir_1/Makefile
 	tests/tables/resolve_table/dir_1/dir_1.1/Makefile
 	tests/tables/resolve_table/dir_2/Makefile
 	tests/tablesWithMetadata/Makefile
 	tests/ueb_test_data/Makefile
 	tests/yaml/Makefile
 	python/Makefile
 	python/setup.py
 	python/louis/Makefile
 	tools/Makefile
 	tools/gnulib/Makefile
 	tools/lou_maketable.d/Makefile
 	tools/lou_maketable.d/lou_maketable
 	gnulib/Makefile])
 AC_OUTPUT
	# Process this file with autoconf to produce a configure script.

	AC_PREREQ(2.68)
	AC_INIT([Liblouis], [3.24.0], [liblouis-liblouisxml@freelists.org], [liblouis], [http://www.liblouis.org])
	AC_CONFIG_SRCDIR([liblouis/lou_backTranslateString.c])
	AM_CONFIG_HEADER(liblouis/config.h)

	AC_CONFIG_AUX_DIR([build-aux])
	AC_CONFIG_MACRO_DIR([m4])
	AM_INIT_AUTOMAKE([-Wall dist-zip])

	# Checks for programs.
	AC_PROG_CC

	# gnulib for the library
	gl_EARLY
	# gnulib for the tools
	gl_tools_EARLY

	gl_INIT
	gl_tools_INIT

	# Checks for more programs.
	AC_PROG_INSTALL
	AC_PROG_LN_S
	AC_PROG_MAKE_SET
	AM_PROG_AR

	# Check if the user wants to enable yaml tests
	AC_ARG_WITH([yaml],
	[AS_HELP_STRING([--with-yaml], [enable YAML-based tests @<:@default=yes@:>@])],
	[with_yaml=$withval],
	[])

	# Check if the user wants to enable coverage
	AC_ARG_WITH([coverage],
	[AS_HELP_STRING([--with-coverage], [enable clang coverage in the fuzzer tests (also add coverage to lib sources) @<:@default=no@:>@])],
	[])

	# Check if the user wants to compile fuzzer
	AC_ARG_WITH([fuzzer],
	[AS_HELP_STRING([--with-fuzzer], [enable fuzzer for function lou_translateString @<:@default=no@:>@])],
	[])

	# Checks for libraries.
	if test "x$with_yaml" == xno; then
	AC_DEFINE([WITHOUT_YAML],[1],[Disable YAML tests])
	else
	AC_CHECK_LIB([yaml], [yaml_parser_initialize])
	fi

	AM_CONDITIONAL([WITH_YAML], [test "x$ac_cv_lib_yaml_yaml_parser_initialize" == xyes -a "x$with_yaml" != xno])

	# If libyaml is missing warn or die depending on --with-yaml
	if test x$ac_cv_lib_yaml_yaml_parser_initialize != xyes; then
	case "$with_yaml" in
	yes) AC_MSG_ERROR([--with-yaml was given, but libyaml was not found]);;
	no) ;;
	*) AC_MSG_WARN([libyaml was not found. YAML tests will be skipped]);;
	esac
	fi

	# Check for coverage
	AM_CONDITIONAL(USE_COVERAGE, [test x"$with_coverage" = xyes])

	# Check for fuzzer
	AC_MSG_CHECKING([whether to enable fuzzer])
	AS_IF([test "x$with_fuzzer" = "xyes" && test "$CC" = "clang" && test "$CXX" = "clang++"], AC_MSG_RESULT([yes]), AC_MSG_RESULT([no]))
	AM_CONDITIONAL(USE_FUZZER, [test "x$with_fuzzer" = "xyes" && test "$CC" = "clang" && test "$CXX" = "clang++"])

	# Checks for header files.
	AC_HEADER_STDC
	AC_CHECK_HEADERS([stddef.h stdlib.h string.h])

	# Checks for typedefs, structures, and compiler characteristics.
	AC_C_CONST

	# Checks for library functions.
	AC_FUNC_MEMCMP
	AC_FUNC_VPRINTF
	AC_CHECK_FUNCS([memset])

	# This is for stuff that absolutely must end up in pyconfig.h.
	# Please use pyport.h instead, if possible.
	AH_TOP([
	#ifndef LOUISCFG_H
	#define LOUISCFG_H
	])
	AH_BOTTOM([
	#endif /LOUISCFG_H/
	])

	# increment if the interface has additions, changes, removals.
	LIBLOUIS_CURRENT=20

	# increment any time the source changes; set to 0 if you increment
	# CURRENT
	LIBLOUIS_REVISION=12

	# increment if any interfaces have been added; set to 0 if any
	# interfaces have been changed or removed. removal has precedence over
	# adding, so set to 0 if both happened.
	LIBLOUIS_AGE=0

	AC_SUBST(LIBLOUIS_CURRENT)
	AC_SUBST(LIBLOUIS_REVISION)
	AC_SUBST(LIBLOUIS_AGE)

	# needed to build the liblouis.def
	DLL_VERSION=`expr ${LIBLOUIS_CURRENT} - ${LIBLOUIS_AGE}`
	AC_SUBST(DLL_VERSION)

	AC_ISC_POSIX
	AC_HEADER_STDC
	AC_LIBTOOL_WIN32_DLL
	AC_PROG_LIBTOOL

	# catch as many warnings as possible with the help of the gnulib manywarnings module
	gl_MANYWARN_ALL_GCC([warnings])
	# Set up the list of the pointless, undesired warnings.
	nw=
	nw="$nw -Wsystem-headers" # Don't let system headers trigger warnings
	nw="$nw -Wsuggest-attribute=pure" # ignore recommendations to use
	nw="$nw -Wsuggest-attribute=format" # attributes, most of these only
	nw="$nw -Wsuggest-attribute=const" # work in gcc
	nw="$nw -Wsuggest-attribute=noreturn"
	# Enable all GCC warnings not in this list.
	gl_MANYWARN_COMPLEMENT([warnings], [$warnings], [$nw])
	for w in $warnings; do
	gl_WARN_ADD([$w])
	done

	# define an additional recursive make target to format the sources.
	# Also check if clang-format is installed
	AM_EXTRA_RECURSIVE_TARGETS([format-sources])
	# prefer version 14 of clang-format as it is part of Ubuntu 22.04 LTS
	AC_CHECK_PROGS([SOURCE_FORMATTER], [clang-format-14 clang-format])
	AM_CONDITIONAL([HAVE_SOURCE_FORMATTER], [test x$SOURCE_FORMATTER = xclang-format -o x$SOURCE_FORMATTER = xclang-format-14])

	# GNU help2man creates man pages from --help output; in many cases,
	# this is sufficient, and obviates the need to maintain man pages
	# separately. However, some developers do not have it so we do not
	# make its use mandatory.
	if test "x$cross_compiling" = xyes; then
	AC_MSG_WARN([cannot generate manual pages while cross compiling])
	else
	AC_CHECK_PROG([HELP2MAN], [help2man], [help2man])
	fi
	AM_CONDITIONAL([HAVE_HELP2MAN], [test x$HELP2MAN = xhelp2man])

	# Only run parts of the tests if we are cross compiling
	AM_CONDITIONAL([CROSS_COMPILING], [test "x$cross_compiling" = xyes])

	# Check for makeinfo version >= 5, required for building documentation.
	have_makeinfo_5=false
	AC_PROG_SED
	AC_CHECK_PROG([MAKEINFO_FOUND], [makeinfo], [yes])
	if test x"${MAKEINFO_FOUND}" = xyes
	then
	MAKEINFO_VERSION_REQ=5
	AC_MSG_CHECKING([for makeinfo version >= $MAKEINFO_VERSION_REQ])
	MAKEINFO_VERSION=`makeinfo --version \| sed -ne 's/^\(makeinfo\\|texi2any\) .* \([[0-9]][[0-9]]\)\.[[0-9]][[0-9]].*$/\2/p'`
	if test x$MAKEINFO_VERSION = x -o 0$MAKEINFO_VERSION -lt $MAKEINFO_VERSION_REQ
	then
	AC_MSG_RESULT([no])
	AC_MSG_WARN([Program 'makeinfo' version >= $MAKEINFO_VERSION_REQ is required. Documentation will not be built.])
	else
	AC_MSG_RESULT([yes])
	have_makeinfo_5=true
	fi
	else
	AC_MSG_WARN([Missing program 'makeinfo', Documentation will not be built. Please install you you want documentation or refer to online resources.])
	fi
	AM_CONDITIONAL([HAVE_MAKEINFO_5], [test x$have_makeinfo_5 = xtrue])

	# Check if the user wants to enable macros.
	# Macros are an experimental feature and need to be enabled
	# explicitely. They are a helpful tool for refactoring, but for now we
	# don't want to expose it to users yet.
	AC_ARG_ENABLE([macros],
	[AS_HELP_STRING([--enable-macros], [enable macros @<:@default=no@:>@])],
	[enable_macros=$enableval],
	[])

	if test "x$enable_macros" == xyes; then
	AC_DEFINE([ENABLE_MACROS],[1],[Enable macros])
	fi
	AM_CONDITIONAL([ENABLE_MACROS], [test "x$enable_macros" = xyes])

	AC_ARG_ENABLE(ucs4,
	AC_HELP_STRING(--enable-ucs4, enable 4 byte-wide characters),
	[AC_DEFINE([WIDECHARS_ARE_UCS4], [1], [Define if widechars are ucs4])],
	[enable_ucs4=no])

	AC_MSG_CHECKING([whether 4 byte-wide characters should be supported])
	AC_MSG_RESULT($enable_ucs4)

	case "$enable_ucs4" in
	yes) WIDECHAR_TYPE='unsigned int';;
	*) WIDECHAR_TYPE='unsigned short int';;
	esac
	AC_SUBST(WIDECHAR_TYPE)
	AM_CONDITIONAL([HAVE_UCS4], [test x$enable_ucs4 = xyes])

	case $host in
	mingw \| cygwin)
	CFLAGS="$CFLAGS -Wl,--add-stdcall-alias"
	LDFLAGS="$LDFLAGS -avoid-version"
	;;
	esac

	AC_CANONICAL_HOST
	build_macosx=no
	case $host_os in
	darwin*)
	build_macosx=yes
	;;
	esac
	AM_CONDITIONAL([OSX], [test "$build_macosx" = "yes"])

	AC_CONFIG_FILES([
	Makefile
	doc/Makefile
	man/Makefile
	liblouis/Makefile
	liblouis/liblouis.h
	windows/Makefile
	windows/include/Makefile
	windows/utils/Makefile
	tables/Makefile
	liblouis.pc
	tests/Makefile
	tests/braille-specs/Makefile
	tests/resolve_table.h
	tests/tables/Makefile
	tests/tables/emphclass/Makefile
	tests/tables/attribute/Makefile
	tests/tables/moreTables/Makefile
	tests/tables/resolve_table/Makefile
	tests/tables/resolve_table/dir_1/Makefile
	tests/tables/resolve_table/dir_1/dir_1.1/Makefile
	tests/tables/resolve_table/dir_2/Makefile
	tests/tablesWithMetadata/Makefile
	tests/ueb_test_data/Makefile
	tests/yaml/Makefile
	python/Makefile
	python/setup.py
	python/louis/Makefile
	tools/Makefile
	tools/gnulib/Makefile
	tools/lou_maketable.d/Makefile
	tools/lou_maketable.d/lou_maketable
	gnulib/Makefile])
	AC_OUTPUT