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Each of Lua's major versions are incompatible with each other. Ubuntu, at least, does not provide a single liblua.so or /usr/include/lua; all SOs and headers are versioned, e.g. liblua5.3.so and /usr/include/lua5.3. There's already an m4 macro in the GNU collection to handle this situation, so let's use that. This allows building with Lua enabled to work on platforms other than Fedora. * Move lib/lua.[ch] -> lib/frrlua.[ch] to prevent path conflicts * Fix configure.ac search for proper CPP and linker flags * Add Lua include path to AM_CPPFLAGS * Update vtysh/extract.pl.in Signed-off-by: Quentin Young <qlyoung@cumulusnetworks.com>
665 lines
26 KiB
Plaintext
665 lines
26 KiB
Plaintext
# ===========================================================================
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# http://www.gnu.org/software/autoconf-archive/ax_lua.html
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# ===========================================================================
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#
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# SYNOPSIS
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#
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# AX_PROG_LUA[([MINIMUM-VERSION], [TOO-BIG-VERSION], [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])]
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# AX_LUA_HEADERS[([ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])]
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# AX_LUA_LIBS[([ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])]
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# AX_LUA_READLINE[([ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])]
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#
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# DESCRIPTION
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#
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# Detect a Lua interpreter, optionally specifying a minimum and maximum
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# version number. Set up important Lua paths, such as the directories in
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# which to install scripts and modules (shared libraries).
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#
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# Also detect Lua headers and libraries. The Lua version contained in the
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# header is checked to match the Lua interpreter version exactly. When
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# searching for Lua libraries, the version number is used as a suffix.
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# This is done with the goal of supporting multiple Lua installs (5.1,
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# 5.2, and 5.3 side-by-side).
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#
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# A note on compatibility with previous versions: This file has been
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# mostly rewritten for serial 18. Most developers should be able to use
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# these macros without needing to modify configure.ac. Care has been taken
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# to preserve each macro's behavior, but there are some differences:
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#
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# 1) AX_WITH_LUA is deprecated; it now expands to the exact same thing as
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# AX_PROG_LUA with no arguments.
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#
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# 2) AX_LUA_HEADERS now checks that the version number defined in lua.h
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# matches the interpreter version. AX_LUA_HEADERS_VERSION is therefore
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# unnecessary, so it is deprecated and does not expand to anything.
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#
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# 3) The configure flag --with-lua-suffix no longer exists; the user
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# should instead specify the LUA precious variable on the command line.
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# See the AX_PROG_LUA description for details.
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#
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# Please read the macro descriptions below for more information.
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#
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# This file was inspired by Andrew Dalke's and James Henstridge's
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# python.m4 and Tom Payne's, Matthieu Moy's, and Reuben Thomas's ax_lua.m4
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# (serial 17). Basically, this file is a mash-up of those two files. I
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# like to think it combines the best of the two!
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#
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# AX_PROG_LUA: Search for the Lua interpreter, and set up important Lua
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# paths. Adds precious variable LUA, which may contain the path of the Lua
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# interpreter. If LUA is blank, the user's path is searched for an
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# suitable interpreter.
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#
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# If MINIMUM-VERSION is supplied, then only Lua interpreters with a
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# version number greater or equal to MINIMUM-VERSION will be accepted. If
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# TOO-BIG-VERSION is also supplied, then only Lua interpreters with a
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# version number greater or equal to MINIMUM-VERSION and less than
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# TOO-BIG-VERSION will be accepted.
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#
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# The Lua version number, LUA_VERSION, is found from the interpreter, and
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# substituted. LUA_PLATFORM is also found, but not currently supported (no
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# standard representation).
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#
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# Finally, the macro finds four paths:
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#
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# luadir Directory to install Lua scripts.
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# pkgluadir $luadir/$PACKAGE
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# luaexecdir Directory to install Lua modules.
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# pkgluaexecdir $luaexecdir/$PACKAGE
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#
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# These paths are found based on $prefix, $exec_prefix, Lua's
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# package.path, and package.cpath. The first path of package.path
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# beginning with $prefix is selected as luadir. The first path of
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# package.cpath beginning with $exec_prefix is used as luaexecdir. This
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# should work on all reasonable Lua installations. If a path cannot be
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# determined, a default path is used. Of course, the user can override
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# these later when invoking make.
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#
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# luadir Default: $prefix/share/lua/$LUA_VERSION
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# luaexecdir Default: $exec_prefix/lib/lua/$LUA_VERSION
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#
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# These directories can be used by Automake as install destinations. The
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# variable name minus 'dir' needs to be used as a prefix to the
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# appropriate Automake primary, e.g. lua_SCRIPS or luaexec_LIBRARIES.
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#
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# If an acceptable Lua interpreter is found, then ACTION-IF-FOUND is
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# performed, otherwise ACTION-IF-NOT-FOUND is preformed. If ACTION-IF-NOT-
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# FOUND is blank, then it will default to printing an error. To prevent
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# the default behavior, give ':' as an action.
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#
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# AX_LUA_HEADERS: Search for Lua headers. Requires that AX_PROG_LUA be
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# expanded before this macro. Adds precious variable LUA_INCLUDE, which
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# may contain Lua specific include flags, e.g. -I/usr/include/lua5.1. If
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# LUA_INCLUDE is blank, then this macro will attempt to find suitable
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# flags.
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#
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# LUA_INCLUDE can be used by Automake to compile Lua modules or
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# executables with embedded interpreters. The *_CPPFLAGS variables should
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# be used for this purpose, e.g. myprog_CPPFLAGS = $(LUA_INCLUDE).
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#
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# This macro searches for the header lua.h (and others). The search is
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# performed with a combination of CPPFLAGS, CPATH, etc, and LUA_INCLUDE.
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# If the search is unsuccessful, then some common directories are tried.
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# If the headers are then found, then LUA_INCLUDE is set accordingly.
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#
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# The paths automatically searched are:
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#
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# * /usr/include/luaX.Y
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# * /usr/include/lua/X.Y
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# * /usr/include/luaXY
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# * /usr/local/include/luaX.Y
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# * /usr/local/include/lua-X.Y
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# * /usr/local/include/lua/X.Y
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# * /usr/local/include/luaXY
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#
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# (Where X.Y is the Lua version number, e.g. 5.1.)
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#
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# The Lua version number found in the headers is always checked to match
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# the Lua interpreter's version number. Lua headers with mismatched
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# version numbers are not accepted.
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#
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# If headers are found, then ACTION-IF-FOUND is performed, otherwise
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# ACTION-IF-NOT-FOUND is performed. If ACTION-IF-NOT-FOUND is blank, then
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# it will default to printing an error. To prevent the default behavior,
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# set the action to ':'.
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#
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# AX_LUA_LIBS: Search for Lua libraries. Requires that AX_PROG_LUA be
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# expanded before this macro. Adds precious variable LUA_LIB, which may
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# contain Lua specific linker flags, e.g. -llua5.1. If LUA_LIB is blank,
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# then this macro will attempt to find suitable flags.
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#
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# LUA_LIB can be used by Automake to link Lua modules or executables with
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# embedded interpreters. The *_LIBADD and *_LDADD variables should be used
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# for this purpose, e.g. mymod_LIBADD = $(LUA_LIB).
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#
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# This macro searches for the Lua library. More technically, it searches
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# for a library containing the function lua_load. The search is performed
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# with a combination of LIBS, LIBRARY_PATH, and LUA_LIB.
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#
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# If the search determines that some linker flags are missing, then those
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# flags will be added to LUA_LIB.
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#
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# If libraries are found, then ACTION-IF-FOUND is performed, otherwise
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# ACTION-IF-NOT-FOUND is performed. If ACTION-IF-NOT-FOUND is blank, then
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# it will default to printing an error. To prevent the default behavior,
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# set the action to ':'.
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#
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# AX_LUA_READLINE: Search for readline headers and libraries. Requires the
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# AX_LIB_READLINE macro, which is provided by ax_lib_readline.m4 from the
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# Autoconf Archive.
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#
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# If a readline compatible library is found, then ACTION-IF-FOUND is
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# performed, otherwise ACTION-IF-NOT-FOUND is performed.
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#
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# LICENSE
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#
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# Copyright (c) 2015 Reuben Thomas <rrt@sc3d.org>
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# Copyright (c) 2014 Tim Perkins <tprk77@gmail.com>
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#
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# This program is free software: you can redistribute it and/or modify it
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# under the terms of the GNU General Public License as published by the
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# Free Software Foundation, either version 3 of the License, or (at your
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# option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
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# Public License for more details.
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#
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# You should have received a copy of the GNU General Public License along
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# with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# As a special exception, the respective Autoconf Macro's copyright owner
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# gives unlimited permission to copy, distribute and modify the configure
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# scripts that are the output of Autoconf when processing the Macro. You
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# need not follow the terms of the GNU General Public License when using
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# or distributing such scripts, even though portions of the text of the
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# Macro appear in them. The GNU General Public License (GPL) does govern
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# all other use of the material that constitutes the Autoconf Macro.
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#
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# This special exception to the GPL applies to versions of the Autoconf
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# Macro released by the Autoconf Archive. When you make and distribute a
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# modified version of the Autoconf Macro, you may extend this special
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# exception to the GPL to apply to your modified version as well.
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#serial 39
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dnl =========================================================================
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dnl AX_PROG_LUA([MINIMUM-VERSION], [TOO-BIG-VERSION],
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dnl [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
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dnl =========================================================================
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AC_DEFUN([AX_PROG_LUA],
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[
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dnl Check for required tools.
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AC_REQUIRE([AC_PROG_GREP])
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AC_REQUIRE([AC_PROG_SED])
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dnl Make LUA a precious variable.
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AC_ARG_VAR([LUA], [The Lua interpreter, e.g. /usr/bin/lua5.1])
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dnl Find a Lua interpreter.
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m4_define_default([_AX_LUA_INTERPRETER_LIST],
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[lua lua5.3 lua53 lua5.2 lua52 lua5.1 lua51 lua50])
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m4_if([$1], [],
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[ dnl No version check is needed. Find any Lua interpreter.
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AS_IF([test "x$LUA" = 'x'],
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[AC_PATH_PROGS([LUA], [_AX_LUA_INTERPRETER_LIST], [:])])
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ax_display_LUA='lua'
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AS_IF([test "x$LUA" != 'x:'],
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[ dnl At least check if this is a Lua interpreter.
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AC_MSG_CHECKING([if $LUA is a Lua interpreter])
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_AX_LUA_CHK_IS_INTRP([$LUA],
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[AC_MSG_RESULT([yes])],
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[ AC_MSG_RESULT([no])
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AC_MSG_ERROR([not a Lua interpreter])
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])
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])
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],
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[ dnl A version check is needed.
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AS_IF([test "x$LUA" != 'x'],
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[ dnl Check if this is a Lua interpreter.
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AC_MSG_CHECKING([if $LUA is a Lua interpreter])
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_AX_LUA_CHK_IS_INTRP([$LUA],
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[AC_MSG_RESULT([yes])],
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[ AC_MSG_RESULT([no])
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AC_MSG_ERROR([not a Lua interpreter])
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])
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dnl Check the version.
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m4_if([$2], [],
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[_ax_check_text="whether $LUA version >= $1"],
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[_ax_check_text="whether $LUA version >= $1, < $2"])
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AC_MSG_CHECKING([$_ax_check_text])
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_AX_LUA_CHK_VER([$LUA], [$1], [$2],
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[AC_MSG_RESULT([yes])],
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[ AC_MSG_RESULT([no])
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AC_MSG_ERROR([version is out of range for specified LUA])])
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ax_display_LUA=$LUA
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],
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[ dnl Try each interpreter until we find one that satisfies VERSION.
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m4_if([$2], [],
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[_ax_check_text="for a Lua interpreter with version >= $1"],
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[_ax_check_text="for a Lua interpreter with version >= $1, < $2"])
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AC_CACHE_CHECK([$_ax_check_text],
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[ax_cv_pathless_LUA],
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[ for ax_cv_pathless_LUA in _AX_LUA_INTERPRETER_LIST none; do
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test "x$ax_cv_pathless_LUA" = 'xnone' && break
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_AX_LUA_CHK_IS_INTRP([$ax_cv_pathless_LUA], [], [continue])
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_AX_LUA_CHK_VER([$ax_cv_pathless_LUA], [$1], [$2], [break])
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done
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])
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dnl Set $LUA to the absolute path of $ax_cv_pathless_LUA.
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AS_IF([test "x$ax_cv_pathless_LUA" = 'xnone'],
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[LUA=':'],
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[AC_PATH_PROG([LUA], [$ax_cv_pathless_LUA])])
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ax_display_LUA=$ax_cv_pathless_LUA
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])
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])
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AS_IF([test "x$LUA" = 'x:'],
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[ dnl Run any user-specified action, or abort.
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m4_default([$4], [AC_MSG_ERROR([cannot find suitable Lua interpreter])])
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],
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[ dnl Query Lua for its version number.
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AC_CACHE_CHECK([for $ax_display_LUA version],
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[ax_cv_lua_version],
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[ dnl Get the interpreter version in X.Y format. This should work for
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dnl interpreters version 5.0 and beyond.
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ax_cv_lua_version=[`$LUA -e '
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-- return a version number in X.Y format
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local _, _, ver = string.find(_VERSION, "^Lua (%d+%.%d+)")
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print(ver)'`]
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])
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AS_IF([test "x$ax_cv_lua_version" = 'x'],
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[AC_MSG_ERROR([invalid Lua version number])])
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AC_SUBST([LUA_VERSION], [$ax_cv_lua_version])
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AC_SUBST([LUA_SHORT_VERSION], [`echo "$LUA_VERSION" | $SED 's|\.||'`])
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dnl The following check is not supported:
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dnl At times (like when building shared libraries) you may want to know
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dnl which OS platform Lua thinks this is.
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AC_CACHE_CHECK([for $ax_display_LUA platform],
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[ax_cv_lua_platform],
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[ax_cv_lua_platform=[`$LUA -e 'print("unknown")'`]])
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AC_SUBST([LUA_PLATFORM], [$ax_cv_lua_platform])
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dnl Use the values of $prefix and $exec_prefix for the corresponding
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dnl values of LUA_PREFIX and LUA_EXEC_PREFIX. These are made distinct
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dnl variables so they can be overridden if need be. However, the general
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dnl consensus is that you shouldn't need this ability.
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AC_SUBST([LUA_PREFIX], ['${prefix}'])
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AC_SUBST([LUA_EXEC_PREFIX], ['${exec_prefix}'])
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dnl Lua provides no way to query the script directory, and instead
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dnl provides LUA_PATH. However, we should be able to make a safe educated
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dnl guess. If the built-in search path contains a directory which is
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dnl prefixed by $prefix, then we can store scripts there. The first
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dnl matching path will be used.
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AC_CACHE_CHECK([for $ax_display_LUA script directory],
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[ax_cv_lua_luadir],
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[ AS_IF([test "x$prefix" = 'xNONE'],
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[ax_lua_prefix=$ac_default_prefix],
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[ax_lua_prefix=$prefix])
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dnl Initialize to the default path.
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ax_cv_lua_luadir="$LUA_PREFIX/share/lua/$LUA_VERSION"
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dnl Try to find a path with the prefix.
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_AX_LUA_FND_PRFX_PTH([$LUA], [$ax_lua_prefix], [script])
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AS_IF([test "x$ax_lua_prefixed_path" != 'x'],
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[ dnl Fix the prefix.
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_ax_strip_prefix=`echo "$ax_lua_prefix" | $SED 's|.|.|g'`
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ax_cv_lua_luadir=`echo "$ax_lua_prefixed_path" | \
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$SED "s|^$_ax_strip_prefix|$LUA_PREFIX|"`
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])
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])
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AC_SUBST([luadir], [$ax_cv_lua_luadir])
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AC_SUBST([pkgluadir], [\${luadir}/$PACKAGE])
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dnl Lua provides no way to query the module directory, and instead
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dnl provides LUA_PATH. However, we should be able to make a safe educated
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dnl guess. If the built-in search path contains a directory which is
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dnl prefixed by $exec_prefix, then we can store modules there. The first
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dnl matching path will be used.
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AC_CACHE_CHECK([for $ax_display_LUA module directory],
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[ax_cv_lua_luaexecdir],
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[ AS_IF([test "x$exec_prefix" = 'xNONE'],
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[ax_lua_exec_prefix=$ax_lua_prefix],
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[ax_lua_exec_prefix=$exec_prefix])
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dnl Initialize to the default path.
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ax_cv_lua_luaexecdir="$LUA_EXEC_PREFIX/lib/lua/$LUA_VERSION"
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dnl Try to find a path with the prefix.
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_AX_LUA_FND_PRFX_PTH([$LUA],
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[$ax_lua_exec_prefix], [module])
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AS_IF([test "x$ax_lua_prefixed_path" != 'x'],
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[ dnl Fix the prefix.
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_ax_strip_prefix=`echo "$ax_lua_exec_prefix" | $SED 's|.|.|g'`
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ax_cv_lua_luaexecdir=`echo "$ax_lua_prefixed_path" | \
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$SED "s|^$_ax_strip_prefix|$LUA_EXEC_PREFIX|"`
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])
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])
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AC_SUBST([luaexecdir], [$ax_cv_lua_luaexecdir])
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AC_SUBST([pkgluaexecdir], [\${luaexecdir}/$PACKAGE])
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dnl Run any user specified action.
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$3
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])
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])
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dnl AX_WITH_LUA is now the same thing as AX_PROG_LUA.
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AC_DEFUN([AX_WITH_LUA],
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[
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AC_MSG_WARN([[$0 is deprecated, please use AX_PROG_LUA instead]])
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AX_PROG_LUA
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])
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dnl =========================================================================
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dnl _AX_LUA_CHK_IS_INTRP(PROG, [ACTION-IF-TRUE], [ACTION-IF-FALSE])
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dnl =========================================================================
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AC_DEFUN([_AX_LUA_CHK_IS_INTRP],
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[
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dnl A minimal Lua factorial to prove this is an interpreter. This should work
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dnl for Lua interpreters version 5.0 and beyond.
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_ax_lua_factorial=[`$1 2>/dev/null -e '
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-- a simple factorial
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function fact (n)
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if n == 0 then
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return 1
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else
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return n * fact(n-1)
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end
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end
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print("fact(5) is " .. fact(5))'`]
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AS_IF([test "$_ax_lua_factorial" = 'fact(5) is 120'],
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[$2], [$3])
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])
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dnl =========================================================================
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dnl _AX_LUA_CHK_VER(PROG, MINIMUM-VERSION, [TOO-BIG-VERSION],
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dnl [ACTION-IF-TRUE], [ACTION-IF-FALSE])
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dnl =========================================================================
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AC_DEFUN([_AX_LUA_CHK_VER],
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[
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dnl Check that the Lua version is within the bounds. Only the major and minor
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dnl version numbers are considered. This should work for Lua interpreters
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dnl version 5.0 and beyond.
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_ax_lua_good_version=[`$1 -e '
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-- a script to compare versions
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function verstr2num(verstr)
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local _, _, majorver, minorver = string.find(verstr, "^(%d+)%.(%d+)")
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if majorver and minorver then
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return tonumber(majorver) * 100 + tonumber(minorver)
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end
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end
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local minver = verstr2num("$2")
|
|
local _, _, trimver = string.find(_VERSION, "^Lua (.*)")
|
|
local ver = verstr2num(trimver)
|
|
local maxver = verstr2num("$3") or 1e9
|
|
if minver <= ver and ver < maxver then
|
|
print("yes")
|
|
else
|
|
print("no")
|
|
end'`]
|
|
AS_IF([test "x$_ax_lua_good_version" = "xyes"],
|
|
[$4], [$5])
|
|
])
|
|
|
|
|
|
dnl =========================================================================
|
|
dnl _AX_LUA_FND_PRFX_PTH(PROG, PREFIX, SCRIPT-OR-MODULE-DIR)
|
|
dnl =========================================================================
|
|
AC_DEFUN([_AX_LUA_FND_PRFX_PTH],
|
|
[
|
|
dnl Get the script or module directory by querying the Lua interpreter,
|
|
dnl filtering on the given prefix, and selecting the shallowest path. If no
|
|
dnl path is found matching the prefix, the result will be an empty string.
|
|
dnl The third argument determines the type of search, it can be 'script' or
|
|
dnl 'module'. Supplying 'script' will perform the search with package.path
|
|
dnl and LUA_PATH, and supplying 'module' will search with package.cpath and
|
|
dnl LUA_CPATH. This is done for compatibility with Lua 5.0.
|
|
|
|
ax_lua_prefixed_path=[`$1 -e '
|
|
-- get the path based on search type
|
|
local searchtype = "$3"
|
|
local paths = ""
|
|
if searchtype == "script" then
|
|
paths = (package and package.path) or LUA_PATH
|
|
elseif searchtype == "module" then
|
|
paths = (package and package.cpath) or LUA_CPATH
|
|
end
|
|
-- search for the prefix
|
|
local prefix = "'$2'"
|
|
local minpath = ""
|
|
local mindepth = 1e9
|
|
string.gsub(paths, "(@<:@^;@:>@+)",
|
|
function (path)
|
|
path = string.gsub(path, "%?.*$", "")
|
|
path = string.gsub(path, "/@<:@^/@:>@*$", "")
|
|
if string.find(path, prefix) then
|
|
local depth = string.len(string.gsub(path, "@<:@^/@:>@", ""))
|
|
if depth < mindepth then
|
|
minpath = path
|
|
mindepth = depth
|
|
end
|
|
end
|
|
end)
|
|
print(minpath)'`]
|
|
])
|
|
|
|
|
|
dnl =========================================================================
|
|
dnl AX_LUA_HEADERS([ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
|
|
dnl =========================================================================
|
|
AC_DEFUN([AX_LUA_HEADERS],
|
|
[
|
|
dnl Check for LUA_VERSION.
|
|
AC_MSG_CHECKING([if LUA_VERSION is defined])
|
|
AS_IF([test "x$LUA_VERSION" != 'x'],
|
|
[AC_MSG_RESULT([yes])],
|
|
[ AC_MSG_RESULT([no])
|
|
AC_MSG_ERROR([cannot check Lua headers without knowing LUA_VERSION])
|
|
])
|
|
|
|
dnl Make LUA_INCLUDE a precious variable.
|
|
AC_ARG_VAR([LUA_INCLUDE], [The Lua includes, e.g. -I/usr/include/lua5.1])
|
|
|
|
dnl Some default directories to search.
|
|
LUA_SHORT_VERSION=`echo "$LUA_VERSION" | $SED 's|\.||'`
|
|
m4_define_default([_AX_LUA_INCLUDE_LIST],
|
|
[ /usr/include/lua$LUA_VERSION \
|
|
/usr/include/lua-$LUA_VERSION \
|
|
/usr/include/lua/$LUA_VERSION \
|
|
/usr/include/lua$LUA_SHORT_VERSION \
|
|
/usr/local/include/lua$LUA_VERSION \
|
|
/usr/local/include/lua-$LUA_VERSION \
|
|
/usr/local/include/lua/$LUA_VERSION \
|
|
/usr/local/include/lua$LUA_SHORT_VERSION \
|
|
])
|
|
|
|
dnl Try to find the headers.
|
|
_ax_lua_saved_cppflags=$CPPFLAGS
|
|
CPPFLAGS="$CPPFLAGS $LUA_INCLUDE"
|
|
AC_CHECK_HEADERS([lua.h lualib.h lauxlib.h luaconf.h])
|
|
CPPFLAGS=$_ax_lua_saved_cppflags
|
|
|
|
dnl Try some other directories if LUA_INCLUDE was not set.
|
|
AS_IF([test "x$LUA_INCLUDE" = 'x' &&
|
|
test "x$ac_cv_header_lua_h" != 'xyes'],
|
|
[ dnl Try some common include paths.
|
|
for _ax_include_path in _AX_LUA_INCLUDE_LIST; do
|
|
test ! -d "$_ax_include_path" && continue
|
|
|
|
AC_MSG_CHECKING([for Lua headers in])
|
|
AC_MSG_RESULT([$_ax_include_path])
|
|
|
|
AS_UNSET([ac_cv_header_lua_h])
|
|
AS_UNSET([ac_cv_header_lualib_h])
|
|
AS_UNSET([ac_cv_header_lauxlib_h])
|
|
AS_UNSET([ac_cv_header_luaconf_h])
|
|
|
|
_ax_lua_saved_cppflags=$CPPFLAGS
|
|
CPPFLAGS="$CPPFLAGS -I$_ax_include_path"
|
|
AC_CHECK_HEADERS([lua.h lualib.h lauxlib.h luaconf.h])
|
|
CPPFLAGS=$_ax_lua_saved_cppflags
|
|
|
|
AS_IF([test "x$ac_cv_header_lua_h" = 'xyes'],
|
|
[ LUA_INCLUDE="-I$_ax_include_path"
|
|
break
|
|
])
|
|
done
|
|
])
|
|
|
|
AS_IF([test "x$ac_cv_header_lua_h" = 'xyes'],
|
|
[ dnl Make a program to print LUA_VERSION defined in the header.
|
|
dnl TODO It would be really nice if we could do this without compiling a
|
|
dnl program, then it would work when cross compiling. But I'm not sure how
|
|
dnl to do this reliably. For now, assume versions match when cross compiling.
|
|
|
|
AS_IF([test "x$cross_compiling" != 'xyes'],
|
|
[ AC_CACHE_CHECK([for Lua header version],
|
|
[ax_cv_lua_header_version],
|
|
[ _ax_lua_saved_cppflags=$CPPFLAGS
|
|
CPPFLAGS="$CPPFLAGS $LUA_INCLUDE"
|
|
AC_RUN_IFELSE(
|
|
[ AC_LANG_SOURCE([[
|
|
#include <lua.h>
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
int main(int argc, char ** argv)
|
|
{
|
|
if(argc > 1) printf("%s", LUA_VERSION);
|
|
exit(EXIT_SUCCESS);
|
|
}
|
|
]])
|
|
],
|
|
[ ax_cv_lua_header_version=`./conftest$EXEEXT p | \
|
|
$SED -n "s|^Lua \(@<:@0-9@:>@\{1,\}\.@<:@0-9@:>@\{1,\}\).\{0,\}|\1|p"`
|
|
],
|
|
[ax_cv_lua_header_version='unknown'])
|
|
CPPFLAGS=$_ax_lua_saved_cppflags
|
|
])
|
|
|
|
dnl Compare this to the previously found LUA_VERSION.
|
|
AC_MSG_CHECKING([if Lua header version matches $LUA_VERSION])
|
|
AS_IF([test "x$ax_cv_lua_header_version" = "x$LUA_VERSION"],
|
|
[ AC_MSG_RESULT([yes])
|
|
ax_header_version_match='yes'
|
|
],
|
|
[ AC_MSG_RESULT([no])
|
|
ax_header_version_match='no'
|
|
])
|
|
],
|
|
[ AC_MSG_WARN([cross compiling so assuming header version number matches])
|
|
ax_header_version_match='yes'
|
|
])
|
|
])
|
|
|
|
dnl Was LUA_INCLUDE specified?
|
|
AS_IF([test "x$ax_header_version_match" != 'xyes' &&
|
|
test "x$LUA_INCLUDE" != 'x'],
|
|
[AC_MSG_ERROR([cannot find headers for specified LUA_INCLUDE])])
|
|
|
|
dnl Test the final result and run user code.
|
|
AS_IF([test "x$ax_header_version_match" = 'xyes'], [$1],
|
|
[m4_default([$2], [AC_MSG_ERROR([cannot find Lua includes])])])
|
|
])
|
|
|
|
dnl AX_LUA_HEADERS_VERSION no longer exists, use AX_LUA_HEADERS.
|
|
AC_DEFUN([AX_LUA_HEADERS_VERSION],
|
|
[
|
|
AC_MSG_WARN([[$0 is deprecated, please use AX_LUA_HEADERS instead]])
|
|
])
|
|
|
|
|
|
dnl =========================================================================
|
|
dnl AX_LUA_LIBS([ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
|
|
dnl =========================================================================
|
|
AC_DEFUN([AX_LUA_LIBS],
|
|
[
|
|
dnl TODO Should this macro also check various -L flags?
|
|
|
|
dnl Check for LUA_VERSION.
|
|
AC_MSG_CHECKING([if LUA_VERSION is defined])
|
|
AS_IF([test "x$LUA_VERSION" != 'x'],
|
|
[AC_MSG_RESULT([yes])],
|
|
[ AC_MSG_RESULT([no])
|
|
AC_MSG_ERROR([cannot check Lua libs without knowing LUA_VERSION])
|
|
])
|
|
|
|
dnl Make LUA_LIB a precious variable.
|
|
AC_ARG_VAR([LUA_LIB], [The Lua library, e.g. -llua5.1])
|
|
|
|
AS_IF([test "x$LUA_LIB" != 'x'],
|
|
[ dnl Check that LUA_LIBS works.
|
|
_ax_lua_saved_libs=$LIBS
|
|
LIBS="$LIBS $LUA_LIB"
|
|
AC_SEARCH_LIBS([lua_load], [],
|
|
[_ax_found_lua_libs='yes'],
|
|
[_ax_found_lua_libs='no'])
|
|
LIBS=$_ax_lua_saved_libs
|
|
|
|
dnl Check the result.
|
|
AS_IF([test "x$_ax_found_lua_libs" != 'xyes'],
|
|
[AC_MSG_ERROR([cannot find libs for specified LUA_LIB])])
|
|
],
|
|
[ dnl First search for extra libs.
|
|
_ax_lua_extra_libs=''
|
|
|
|
_ax_lua_saved_libs=$LIBS
|
|
LIBS="$LIBS $LUA_LIB"
|
|
AC_SEARCH_LIBS([exp], [m])
|
|
AC_SEARCH_LIBS([dlopen], [dl])
|
|
LIBS=$_ax_lua_saved_libs
|
|
|
|
AS_IF([test "x$ac_cv_search_exp" != 'xno' &&
|
|
test "x$ac_cv_search_exp" != 'xnone required'],
|
|
[_ax_lua_extra_libs="$_ax_lua_extra_libs $ac_cv_search_exp"])
|
|
|
|
AS_IF([test "x$ac_cv_search_dlopen" != 'xno' &&
|
|
test "x$ac_cv_search_dlopen" != 'xnone required'],
|
|
[_ax_lua_extra_libs="$_ax_lua_extra_libs $ac_cv_search_dlopen"])
|
|
|
|
dnl Try to find the Lua libs.
|
|
_ax_lua_saved_libs=$LIBS
|
|
LIBS="$LIBS $LUA_LIB"
|
|
AC_SEARCH_LIBS([lua_load],
|
|
[ lua$LUA_VERSION \
|
|
lua$LUA_SHORT_VERSION \
|
|
lua-$LUA_VERSION \
|
|
lua-$LUA_SHORT_VERSION \
|
|
lua \
|
|
],
|
|
[_ax_found_lua_libs='yes'],
|
|
[_ax_found_lua_libs='no'],
|
|
[$_ax_lua_extra_libs])
|
|
LIBS=$_ax_lua_saved_libs
|
|
|
|
AS_IF([test "x$ac_cv_search_lua_load" != 'xno' &&
|
|
test "x$ac_cv_search_lua_load" != 'xnone required'],
|
|
[LUA_LIB="$ac_cv_search_lua_load $_ax_lua_extra_libs"])
|
|
])
|
|
|
|
dnl Test the result and run user code.
|
|
AS_IF([test "x$_ax_found_lua_libs" = 'xyes'], [$1],
|
|
[m4_default([$2], [AC_MSG_ERROR([cannot find Lua libs])])])
|
|
])
|
|
|
|
|
|
dnl =========================================================================
|
|
dnl AX_LUA_READLINE([ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
|
|
dnl =========================================================================
|
|
AC_DEFUN([AX_LUA_READLINE],
|
|
[
|
|
AX_LIB_READLINE
|
|
AS_IF([test "x$ac_cv_header_readline_readline_h" != 'x' &&
|
|
test "x$ac_cv_header_readline_history_h" != 'x'],
|
|
[ LUA_LIBS_CFLAGS="-DLUA_USE_READLINE $LUA_LIBS_CFLAGS"
|
|
$1
|
|
],
|
|
[$2])
|
|
])
|