Ada95/configure.in

dnl***************************************************************************
dnl Copyright 2018-2022,2023 Thomas E. Dickey                                *
dnl Copyright 2010-2016,2018 Free Software Foundation, Inc.                  *
dnl                                                                          *
dnl Permission is hereby granted, free of charge, to any person obtaining a  *
dnl copy of this software and associated documentation files (the            *
dnl "Software"), to deal in the Software without restriction, including      *
dnl without limitation the rights to use, copy, modify, merge, publish,      *
dnl distribute, distribute with modifications, sublicense, and/or sell       *
dnl copies of the Software, and to permit persons to whom the Software is    *
dnl furnished to do so, subject to the following conditions:                 *
dnl                                                                          *
dnl The above copyright notice and this permission notice shall be included  *
dnl in all copies or substantial portions of the Software.                   *
dnl                                                                          *
dnl THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
dnl OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
dnl MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
dnl IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
dnl DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
dnl OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
dnl THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
dnl                                                                          *
dnl Except as contained in this notice, the name(s) of the above copyright   *
dnl holders shall not be used in advertising or otherwise to promote the     *
dnl sale, use or other dealings in this Software without prior written       *
dnl authorization.                                                           *
dnl***************************************************************************
dnl
dnl Author: Thomas E. Dickey
dnl
dnl $Id: configure.in,v 1.91 2023/02/18 23:21:29 tom Exp $
dnl Process this file with autoconf to produce a configure script.
dnl
dnl For additional information, see
dnl     https://invisible-island.net/autoconf/
dnl     https://invisible-island.net/autoconf/my-autoconf.html
dnl
dnl ---------------------------------------------------------------------------
AC_PREREQ(2.52.20210509)
AC_REVISION($Revision: 1.91 $)
AC_INIT(gen/gen.c)
AC_CONFIG_HEADER(include/ncurses_cfg.h:include/ncurses_cfg.hin)

AC_DEFUN([AC_PATH_XTRA],[])dnl ignore dependencies on this

PACKAGE="AdaCurses"		AC_SUBST(PACKAGE)

CF_TOP_BUILDDIR

CF_HELP_MESSAGE(General Options:)

CF_WITH_SYSTYPE

###	Save the given $CFLAGS to allow user-override.
cf_user_CFLAGS="$CFLAGS"

###	Default install-location
CF_CFG_DEFAULTS

###	Checks for programs.
CF_PROG_CC(gnatgcc gcc cc)
AC_PROG_CPP
AC_PROG_GCC_TRADITIONAL
CF_PROG_CC_C_O(CC,[$CFLAGS $CPPFLAGS])

AC_ARG_PROGRAM

CF_PROG_AWK
CF_PROG_EGREP
AC_PROG_INSTALL
CF_PROG_LN_S

CF_PROG_INSTALL
CF_INSTALL_OPTS

AC_SYS_LONG_FILE_NAMES

# if we find pkg-config, check if we should install the ".pc" files.
CF_PKG_CONFIG
CF_WITH_PKG_CONFIG_LIBDIR

AC_MSG_CHECKING(if you want to build test-programs)
AC_ARG_WITH(tests,
	[  --without-tests         suppress build with test-programs],
	[cf_with_tests=$withval],
	[cf_with_tests=yes])
AC_MSG_RESULT($cf_with_tests)

AC_MSG_CHECKING(if we should assume mixed-case filenames)
AC_ARG_ENABLE(mixed-case,
	[  --enable-mixed-case     tic should assume mixed-case filenames],
	[enable_mixedcase=$enableval],
	[enable_mixedcase=auto])
AC_MSG_RESULT($enable_mixedcase)
if test "$enable_mixedcase" = "auto" ; then
	CF_MIXEDCASE_FILENAMES
else
	cf_cv_mixedcase=$enable_mixedcase
	if test "$enable_mixedcase" = "yes" ; then
		AC_DEFINE(MIXEDCASE_FILENAMES)
	fi
fi

# do this after mixed-case option (tags/TAGS is not as important as tic).
AC_PROG_MAKE_SET
CF_MAKE_PHONY
CF_MAKE_TAGS
CF_MAKEFLAGS

dnl These are standard among *NIX systems, but not when cross-compiling
AC_CHECK_TOOL(RANLIB, ranlib, ':')
AC_CHECK_TOOL(LD, ld, ld)
AC_CHECK_TOOL(AR, ar, ar)
CF_AR_FLAGS
CF_PATHSEP

dnl Special option for use by system-builders: the install-prefix is used to
dnl adjust the location into which the actual install is done, so that an
dnl archive can be built without modifying the host system's configuration.
AC_MSG_CHECKING(if you have specified an install-prefix)
AC_ARG_WITH(install-prefix,
	[  --with-install-prefix   prefixes actual install-location ($DESTDIR)],
	[case "$withval" in
	(yes|no)
		;;
	(*)	DESTDIR="$withval"
		;;
	esac])
AC_MSG_RESULT($DESTDIR)
AC_SUBST(DESTDIR)

###############################################################################
CF_HELP_MESSAGE(Build-Tools Needed to Compile Temporary Applications for Cross-compiling:)
# If we're cross-compiling, allow the user to override the tools and their
# options.  The configure script is oriented toward identifying the host
# compiler, etc., but we need a build compiler to generate parts of the source.
CF_BUILD_CC

###############################################################################
CF_HELP_MESSAGE(Options to Specify the Libraries Built/Used:)

### Options to allow the user to specify the set of libraries which are used.
### Use "--without-normal --with-shared" to allow the default model to be
### shared, for example.
cf_list_models=""

AC_MSG_CHECKING(if you want to build shared C-objects)
AC_ARG_WITH(shared,
	[  --with-shared           generate shared C-objects (needed for --with-ada-sharedlib)],
	[with_shared=$withval],
	[with_shared=no])
AC_MSG_RESULT($with_shared)
test "$with_shared" = "yes" && cf_list_models="$cf_list_models shared"

AC_MSG_CHECKING(for specified models)
test -z "$cf_list_models" && cf_list_models=normal
AC_MSG_RESULT($cf_list_models)

### Use the first model as the default, and save its suffix for use in building
### up test-applications.
AC_MSG_CHECKING(for default model)
DFT_LWR_MODEL=`echo "$cf_list_models" | $AWK '{print $1}'`
AC_MSG_RESULT($DFT_LWR_MODEL)

CF_UPPER(DFT_UPR_MODEL,$DFT_LWR_MODEL)dnl

AC_SUBST(DFT_LWR_MODEL)dnl	the default model ("normal")
AC_SUBST(DFT_UPR_MODEL)dnl	the default model ("NORMAL")

CF_NCURSES_ADDON

CF_WITH_LIB_PREFIX(cf_prefix)

LIB_SUFFIX=
AC_SUBST(LIB_SUFFIX)

###############################################################################

dnl Not all ports of gcc support the -g option

if test X"$CC_G_OPT" = X"" ; then
	CC_G_OPT='-g'
	test -n "$GCC" && test "${ac_cv_prog_cc_g}" != yes && CC_G_OPT=''
fi
AC_SUBST(CC_G_OPT)

AC_MSG_CHECKING(for default loader flags)
case $DFT_LWR_MODEL in
(normal)  LD_MODEL=''   ;;
(debug)   LD_MODEL=$CC_G_OPT ;;
(profile) LD_MODEL='-pg';;
(shared)  LD_MODEL=''   ;;
esac
AC_SUBST(LD_MODEL)dnl		the type of link (e.g., -g or -pg)
AC_MSG_RESULT($LD_MODEL)

CF_SHARED_OPTS

# The test/sample programs in the original tree link using rpath option.
# Make it optional for packagers.
if test -n "$LOCAL_LDFLAGS"
then
	AC_MSG_CHECKING(if you want to link sample programs with rpath option)
	AC_ARG_ENABLE(rpath-link,
		[  --enable-rpath-link     link sample programs with rpath option],
		[with_rpath_link=$enableval],
		[with_rpath_link=yes])
	AC_MSG_RESULT($with_rpath_link)
	if test "$with_rpath_link" = no
	then
		LOCAL_LDFLAGS=
		LOCAL_LDFLAGS2=
	fi
fi

###############################################################################
CF_HELP_MESSAGE(Fine-Tuning Your Configuration:)

###   use option --enable-broken-linker to force on use of broken-linker support
CF_ENABLE_BROKEN_LINKER

# Check to define _XOPEN_SOURCE "automatically"
CF_XOPEN_SOURCE(600)
AC_CHECK_DECL(exit)

CF_LARGEFILE

### Enable compiling-in rcs id's
AC_MSG_CHECKING(if RCS identifiers should be compiled-in)
AC_ARG_WITH(rcs-ids,
	[  --with-rcs-ids          compile-in RCS identifiers],
	[with_rcs_ids=$withval],
	[with_rcs_ids=no])
AC_MSG_RESULT($with_rcs_ids)
test "$with_rcs_ids" = yes && AC_DEFINE(USE_RCS_IDS,1,[Define to 1 if RCS identifiers should be compiled-in)])

###############################################################################
CF_HELP_MESSAGE(Extensions:)

### Note that some functions (such as const) are normally disabled anyway.
AC_MSG_CHECKING(if you want to build with function extensions)
AC_ARG_ENABLE(ext-funcs,
	[  --disable-ext-funcs     disable function-extensions],
	[with_ext_funcs=$enableval],
	[with_ext_funcs=yes])
AC_MSG_RESULT($with_ext_funcs)
if test "$with_ext_funcs" = yes ; then
	NCURSES_EXT_FUNCS=1
	AC_DEFINE(HAVE_USE_DEFAULT_COLORS,1,[Define to 1 if we have use_default_colors function])
	AC_DEFINE(NCURSES_EXT_FUNCS,1,[Define to 1 if we have ncurses extended functions])
else
	NCURSES_EXT_FUNCS=0
fi
AC_SUBST(NCURSES_EXT_FUNCS)

###   use option --enable-const to turn on use of const beyond that in XSI.
AC_MSG_CHECKING(for extended use of const keyword)
AC_ARG_ENABLE(const,
	[  --enable-const          compile with extra/non-standard const],
	[with_ext_const=$enableval],
	[with_ext_const=no])
AC_MSG_RESULT($with_ext_const)
NCURSES_CONST='/*nothing*/'
if test "$with_ext_const" = yes ; then
	NCURSES_CONST=const
fi
AC_SUBST(NCURSES_CONST)

###############################################################################
# These options are relatively safe to experiment with.
CF_HELP_MESSAGE(Development Code:)
AC_MSG_CHECKING(if you want all development code)
AC_ARG_WITH(develop,
	[  --without-develop       disable development options],
	[with_develop=$withval],
	[with_develop=no])
AC_MSG_RESULT($with_develop)

###############################################################################
# These are just experimental, probably should not be in a package:
CF_HELP_MESSAGE(Experimental Code:)

# This is still experimental (20080329), but should ultimately be moved to
# the script-block --with-normal, etc.
CF_WITH_PTHREAD

AC_MSG_CHECKING(if you want to use weak-symbols for pthreads)
AC_ARG_ENABLE(weak-symbols,
	[  --enable-weak-symbols   enable weak-symbols for pthreads],
	[use_weak_symbols=$withval],
	[use_weak_symbols=no])
AC_MSG_RESULT($use_weak_symbols)
if test "$use_weak_symbols" = yes ; then
	CF_WEAK_SYMBOLS
else
	cf_cv_weak_symbols=no
fi

if test $cf_cv_weak_symbols = yes ; then
	AC_DEFINE(USE_WEAK_SYMBOLS,1,[Define to 1 to enable weak-symbols for pthreads])
fi

PTHREAD=
if test "$with_pthread" = "yes" ; then
	AC_DEFINE(USE_PTHREADS,1,[Define to 1 to use the pthreads library])
	enable_reentrant=yes
	if test $cf_cv_weak_symbols = yes ; then
		PTHREAD=-lpthread
	fi
fi
AC_SUBST(PTHREAD)

# OpenSUSE is installing ncurses6, using reentrant option.
AC_CHECK_FUNC(_nc_TABSIZE,[assume_reentrant=yes], [assume_reentrant=no])

# Reentrant code has to be opaque; there's little advantage to making ncurses
# opaque outside of that, so there is no --enable-opaque option.  We can use
# this option without --with-pthreads, but this will be always set for
# pthreads.
AC_MSG_CHECKING(if you want experimental reentrant code)
AC_ARG_ENABLE(reentrant,
	[  --enable-reentrant      compile with experimental reentrant code],
	[with_reentrant=$enableval],
	[with_reentrant=$assume_reentrant])
AC_MSG_RESULT($with_reentrant)
if test "$with_reentrant" = yes ; then
	cf_cv_enable_reentrant=1
	if test $cf_cv_weak_symbols = yes ; then
		CF_REMOVE_LIB(LIBS,$LIBS,pthread)
	elif test "$assume_reentrant" = no ; then
		LIB_SUFFIX="t${LIB_SUFFIX}"
	fi
	AC_DEFINE(USE_REENTRANT,1,[Define to 1 to compile with experimental reentrant code])
else
	cf_cv_enable_reentrant=0
fi
AC_SUBST(cf_cv_enable_reentrant)

### Allow using a different wrap-prefix
if test "$cf_cv_enable_reentrant" != 0 || test "$BROKEN_LINKER" = 1 ; then
	AC_MSG_CHECKING(for prefix used to wrap public variables)
	AC_ARG_WITH(wrap-prefix,
		[  --with-wrap-prefix=XXX  override prefix used for public variables],
		[NCURSES_WRAP_PREFIX=$withval],
		[NCURSES_WRAP_PREFIX=_nc_])
	AC_MSG_RESULT($NCURSES_WRAP_PREFIX)
else
	NCURSES_WRAP_PREFIX=_nc_
fi
AC_SUBST(NCURSES_WRAP_PREFIX)
AC_DEFINE_UNQUOTED(NCURSES_WRAP_PREFIX,"$NCURSES_WRAP_PREFIX",[Define to override _nc_ ncurses internal prefix])

###############################################################################
CF_HELP_MESSAGE(Testing/development Options:)

###	use option --disable-echo to suppress full display compiling commands
CF_DISABLE_ECHO

CF_ENABLE_WARNINGS(Wno-unknown-pragmas Wswitch-enum,yes)
if test "x$enable_warnings" = "xyes"; then
 	CF_ADD_ADAFLAGS(-gnatwa -gnatyg)
fi

###	use option --enable-assertions to turn on generation of assertion code
AC_MSG_CHECKING(if you want to enable runtime assertions)
AC_ARG_ENABLE(assertions,
	[  --enable-assertions     test: turn on generation of assertion code],
	[with_assertions=$enableval],
	[with_assertions=no])
AC_MSG_RESULT($with_assertions)
if test -n "$GCC"
then
	if test "$with_assertions" = no
	then
		CPPFLAGS="$CPPFLAGS -DNDEBUG"
	else
		CF_ADD_ADAFLAGS(-gnata)
	fi
fi

###	use option --disable-leaks to suppress "permanent" leaks, for testing
AC_DEFINE(HAVE_NC_ALLOC_H,1,[Define to 1 if we have nc_alloc.h header])

###	use option --enable-expanded to generate certain macros as functions
AC_ARG_ENABLE(expanded,
	[  --enable-expanded       test: generate functions for certain macros],
	[test "$enableval" = yes && AC_DEFINE(NCURSES_EXPANDED,1,[Define to 1 if ncurses macros should be expanded as functions])])

###	use option --disable-macros to suppress macros in favor of functions
AC_ARG_ENABLE(macros,
	[  --disable-macros        test: use functions rather than macros],
	[test "$enableval" = no && AC_DEFINE(NCURSES_NOMACROS,1,[Define to 1 if ncurses macros should be expanded as functions])])

# Normally we only add trace() to the debug-library.  Allow this to be
# extended to all models of the ncurses library:
cf_all_traces=no
case "$CFLAGS $CPPFLAGS" in
(*-DTRACE*)
	cf_all_traces=yes
	;;
esac

AC_MSG_CHECKING(whether to add trace feature to all models)
AC_ARG_WITH(trace,
[  --with-trace            test: add trace() function to all models of ncurses],
[cf_with_trace=$withval],
[cf_with_trace=$cf_all_traces])
AC_MSG_RESULT($cf_with_trace)

if test "$cf_with_trace" = yes ; then
	ADA_TRACE=TRUE
	CF_ADD_CFLAGS(-DTRACE)
else
	ADA_TRACE=FALSE
fi

AC_SUBST(ADA_TRACE)

CF_DISABLE_GNAT_PROJECTS

###	Checks for libraries.
case $cf_cv_system_name in
(*mingw32*)
	CF_CHECK_LIBSSP
	;;
(*)
	CF_FUNC_GETTIME
	;;
esac

###	Checks for header files.
AC_CHECK_SIZEOF([signed char])
AC_HEADER_DIRENT
AC_HEADER_TIME

###	checks for compiler characteristics
AC_LANG_C
AC_C_CONST

###	Checks for external-data
CF_LINK_DATAONLY

###	Checks for library functions.
CF_MKSTEMP

dnl We'll do our own -g libraries, unless the user's overridden via $CFLAGS
if test -z "$cf_user_CFLAGS" && test "$with_no_leaks" = no ; then
	CF_STRIP_G_OPT(CFLAGS)
	CF_STRIP_G_OPT(CXXFLAGS)
fi

CF_HELP_MESSAGE(Ada95 Binding Options:)
cf_with_ada=yes
dnl Check for availability of GNU Ada Translator (GNAT).
dnl At the moment we support no other Ada95 compiler.
if test "$cf_with_ada" != "no" ; then
	CF_PROG_GNAT
	if test	"$cf_cv_prog_gnat_correct" = yes; then
		CF_FIXUP_ADAFLAGS

		CF_GNATPREP_OPT_T

		CF_GNAT_GENERICS
		CF_GNAT_SIGINT
		CF_GNAT_PROJECTS

		CF_WITH_ADA_COMPILER

		cf_ada_package=terminal_interface
		AC_SUBST(cf_ada_package)

		CF_WITH_ADA_INCLUDE
		CF_WITH_ADA_OBJECTS
		CF_WITH_ADA_SHAREDLIB

		# allow the Ada binding to be renamed
		CF_WITH_ADA_LIBNAME(AdaCurses)
	else
		AC_MSG_ERROR(No usable Ada compiler found)
	fi
else
	AC_MSG_ERROR(The Ada compiler is needed for this package)
fi

################################################################################

# not needed
TINFO_LDFLAGS2=
AC_SUBST(TINFO_LDFLAGS2)
TINFO_LIBS=
AC_SUBST(TINFO_LIBS)

### Construct the list of include-directories to be generated
CF_INCLUDE_DIRS
CF_ADA_INCLUDE_DIRS

### Build up pieces for makefile rules
AC_MSG_CHECKING(default library suffix)
CF_LIB_TYPE($DFT_LWR_MODEL,DFT_ARG_SUFFIX)dnl
AC_SUBST(DFT_ARG_SUFFIX)dnl the string to append to "-lncurses" ("")
AC_MSG_RESULT($DFT_ARG_SUFFIX)

AC_MSG_CHECKING(default library-dependency suffix)
CF_LIB_SUFFIX($DFT_LWR_MODEL,DFT_LIB_SUFFIX,DFT_DEP_SUFFIX)dnl
AC_SUBST(DFT_DEP_SUFFIX)dnl the corresponding library-suffix (".a")
AC_MSG_RESULT($DFT_DEP_SUFFIX)

AC_MSG_CHECKING(default object directory)
CF_OBJ_SUBDIR($DFT_LWR_MODEL,DFT_OBJ_SUBDIR)dnl
AC_SUBST(DFT_OBJ_SUBDIR)dnl the default object-directory ("obj")
AC_MSG_RESULT($DFT_OBJ_SUBDIR)

### Set up low-level terminfo dependencies for makefiles.

if test "$DFT_LWR_MODEL" = shared ; then
	case $cf_cv_system_name in
	(cygwin*)
		# "lib" files have ".dll.a" suffix, "cyg" files have ".dll"
		;;
	(msys*)
		# "lib" files have ".dll.a" suffix, "msys-" files have ".dll"
		;;
	esac
fi

USE_ARG_SUFFIX=${DFT_ARG_SUFFIX}
AC_SUBST(USE_ARG_SUFFIX)

USE_LIB_SUFFIX=${DFT_ARG_SUFFIX}
AC_SUBST(USE_LIB_SUFFIX)

USE_CFG_SUFFIX=${DFT_ARG_SUFFIX}
AC_SUBST(USE_CFG_SUFFIX)

### Construct the list of subdirectories for which we'll customize makefiles
### with the appropriate compile-rules.

SUB_MAKEFILES="gen/adacurses${USE_ARG_SUFFIX}-config:gen/adacurses-config.in"

AC_DEFINE_UNQUOTED(NCURSES_PATHSEP,'$PATH_SEPARATOR',[Define to override ':' as the library path-separator])

################################################################################

TEST_ARG2=
AC_SUBST(TEST_ARG2)

TEST_LIBS2=
AC_SUBST(TEST_LIBS2)

dnl for separate build, this is good enough for "sh $(top_srcdir)/misc/shlib"
NCURSES_SHLIB2="sh -c"
AC_SUBST(NCURSES_SHLIB2)

ADA_SUBDIRS="include gen src doc"
if test "x$cf_with_tests" != "xno" ; then
	ADA_SUBDIRS="$ADA_SUBDIRS samples"
fi
for cf_dir in $ADA_SUBDIRS
do
	SUB_MAKEFILES="$SUB_MAKEFILES $cf_dir/Makefile"
done
AC_SUBST(ADA_SUBDIRS)

NCURSES_TREE="#"
AC_SUBST(NCURSES_TREE)

EXTERNAL_TREE=
AC_SUBST(EXTERNAL_TREE)

# match layout used by make-tar.sh
ADAHTML_DIR=../doc/ada
AC_SUBST(ADAHTML_DIR)

if test "x$cross_compiling" = xyes ; then
	ADAGEN_LDFLAGS='$(CROSS_LDFLAGS)'
else
	ADAGEN_LDFLAGS='$(NATIVE_LDFLAGS)'
fi

AC_SUBST(ADAGEN_LDFLAGS)

AC_OUTPUT( \
	$SUB_MAKEFILES \
	src/library.gpr:src/library.gpr.in \
	doc/adacurses${DFT_ARG_SUFFIX}-config.1:doc/MKada_config.in \
	Makefile,[
$AWK -v PACKAGE=$PACKAGE -f $srcdir/mk-pkg.awk </dev/null >> Makefile
if test -z "$USE_OLD_MAKERULES" ; then
	$AWK -f $srcdir/mk-1st.awk <$srcdir/src/modules >>src/Makefile
fi
],[
### Special initialization commands, used to pass information from the
### configuration-run into config.status

AWK="$AWK"
DFT_ARG_SUFFIX="$DFT_ARG_SUFFIX"
DFT_LWR_MODEL="$DFT_LWR_MODEL"
LIB_NAME="$LIB_NAME"
LIB_PREFIX="$LIB_PREFIX"
LIB_SUFFIX="$LIB_SUFFIX"
LN_S="$LN_S"
NCURSES_MAJOR="$NCURSES_MAJOR"
NCURSES_MINOR="$NCURSES_MINOR"
NCURSES_PATCH="$NCURSES_PATCH"
PACKAGE="$PACKAGE"
USE_OLD_MAKERULES="$USE_OLD_MAKERULES"
cf_cv_VERSION_GNATMAKE=$cf_cv_VERSION_GNATMAKE
cf_cv_VERSION_GPRBUILD=$cf_cv_VERSION_GPRBUILD
cf_cv_abi_version="$cf_cv_abi_version"
cf_cv_rel_version="$cf_cv_rel_version"
cf_cv_rm_so_locs="$cf_cv_rm_so_locs"
cf_cv_shared_soname='$cf_cv_shared_soname'
cf_cv_shlib_version="$cf_cv_shlib_version"
cf_cv_shlib_version_infix="$cf_cv_shlib_version_infix"
cf_cv_system_name="$cf_cv_system_name"
host="$host"
target="$target"

],cat)dnl
${MAKE:-make} preinstall