go.m4
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# This file is part of Autoconf. -*- Autoconf -*- # Go language support. # Copyright (C) 2011-2012 Free Software Foundation, Inc. # This file is part of Autoconf. This program is free # software; you can redistribute it and/or modify it under the # terms of the GNU General Public License as published by the # Free Software Foundation, either version 3 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # Under Section 7 of GPL version 3, you are granted additional # permissions described in the Autoconf Configure Script Exception, # version 3.0, as published by the Free Software Foundation. # # You should have received a copy of the GNU General Public License # and a copy of the Autoconf Configure Script Exception along with # this program; see the files COPYINGv3 and COPYING.EXCEPTION # respectively. If not, see <http://www.gnu.org/licenses/>. # Go support contributed by Ian Lance Taylor. # This currently only supports gccgo, not 6g/8g/5g. # ------------------- # # Language selection. # ------------------- # # AC_LANG(Go) # ----------- AC_LANG_DEFINE([Go], [go], [GO], [GOC], [], [ac_ext=go ac_compile='$GOC -c $GOFLAGS conftest.$ac_ext >&AS_MESSAGE_LOG_FD' ac_link='$GOC -o conftest$ac_exeext $GOFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&AS_MESSAGE_LOG_FD' ac_compiler_gnu=yes ]) # AC_LANG_GO # ---------- AU_DEFUN([AC_LANG_GO], [AC_LANG(Go)]) # ------------------- # # Producing programs. # ------------------- # # AC_LANG_PROGRAM(Go)([PROLOGUE], [BODY]) # --------------------------------------- m4_define([AC_LANG_PROGRAM(Go)], [package main $1 func main() { $2 }]) # _AC_LANG_IO_PROGRAM(Go) # ----------------------- # Produce source that performs I/O. m4_define([_AC_LANG_IO_PROGRAM(Go)], [AC_LANG_PROGRAM([import ( "fmt"; "os" )], [f, err := os.Open("conftest.out", os.O_CREATE|os.O_WRONLY, 0777) if err != nil { fmt.Println(err) os.Exit(1) } if err = f.Close(); err != nil { fmt.Println(err) os.Exit(1) } os.Exit(0) ])]) # AC_LANG_CALL(Go)(PROLOGUE, FUNCTION) # ------------------------------------ # Avoid conflicting decl of main. m4_define([AC_LANG_CALL(Go)], [AC_LANG_PROGRAM([$1 m4_if([$2], [main], , [func $2()])],[$2()])]) # AC_LANG_FUNC_LINK_TRY(Go)(FUNCTION) # ----------------------------------- # Try to link a program which calls FUNCTION. m4_define([AC_LANG_FUNC_LINK_TRY(Go)], [AC_LANG_PROGRAM( [func $1() int var f = $1 ], [return f()])]) # AC_LANG_BOOL_COMPILE_TRY(Go)(PROLOGUE, EXPRESSION) # -------------------------------------------------- # Return a program which is valid if EXPRESSION is nonzero. m4_define([AC_LANG_BOOL_COMPILE_TRY(Go)], [AC_LANG_PROGRAM([$1], [var test_array @<:@1 - 2 * !($2)@:>@int test_array @<:@0@:>@ = 0 ])]) # AC_LANG_INT_SAVE(Go)(PROLOGUE, EXPRESSION) # ------------------------------------------ m4_define([AC_LANG_INT_SAVE(Go)], [AC_LANG_PROGRAM([$1 import ( "fmt" "os" ) ], [f, err := os.Open("conftest.val", os.O_CREATE|os.O_WRONLY, 0777) if err != nil { os.Exit(1) } if $2 < 0 { int64 i = int64($2) if i != $2 { os.Exit(1) } if _, err := fmt.Print(f, i); err != nil { os.Exit(1) } } else { uint64 i = uint64($2) if i != $2 { os.Exit(1) } if _, err := fmt.Print(f, i); err != nil { os.Exit(1) } } if err = f.Close(); err != nil { os.Exit(1) } os.Exit(0); ])]) # ---------------------- # # Looking for compilers. # # ---------------------- # # AC_LANG_COMPILER(Go) # -------------------- AC_DEFUN([AC_LANG_COMPILER(Go)], [AC_REQUIRE([AC_PROG_GO])]) # AC_PROG_GO # ---------- AN_MAKEVAR([GOC], [AC_PROG_GO]) AN_PROGRAM([gccgo], [AC_PROG_GO]) AC_DEFUN([AC_PROG_GO], [AC_LANG_PUSH(Go)dnl AC_ARG_VAR([GOC], [Go compiler command])dnl AC_ARG_VAR([GOFLAGS], [Go compiler flags])dnl _AC_ARG_VAR_LDFLAGS()dnl m4_ifval([$1], [AC_CHECK_TOOLS(GOC, [$1])], [AC_CHECK_TOOL(GOC, gccgo) if test -z "$GOC"; then if test -n "$ac_tool_prefix"; then AC_CHECK_PROG(GOC, [${ac_tool_prefix}gccgo], [$ac_tool_prefix}gccgo]) fi fi if test -z "$GOC"; then AC_CHECK_PROG(GOC, gccgo, gccgo, , , false) fi ]) # Provide some information about the compiler. _AS_ECHO_LOG([checking for _AC_LANG compiler version]) set X $ac_compile ac_compiler=$[2] _AC_DO_LIMIT([$ac_compiler --version >&AS_MESSAGE_LOG_FD]) m4_expand_once([_AC_COMPILER_EXEEXT])[]dnl m4_expand_once([_AC_COMPILER_OBJEXT])[]dnl GOFLAGS="-g -O2" AC_LANG_POP(Go)dnl ])# AC_PROG_GO
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