[14547] | 1 | # Process this file with autoconf to produce a configure script. |
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[18473] | 2 | # Copyright (C) 1995, 1997, 1998, 2001 Free Software Foundation, Inc. |
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[14547] | 3 | # Contributed by Dave Love (d.love@dl.ac.uk). |
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| 4 | # |
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| 5 | #This file is part of GNU Fortran. |
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| 6 | # |
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| 7 | #GNU Fortran is free software; you can redistribute it and/or modify |
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| 8 | #it under the terms of the GNU General Public License as published by |
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| 9 | #the Free Software Foundation; either version 2, or (at your option) |
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| 10 | #any later version. |
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| 11 | # |
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| 12 | #GNU Fortran is distributed in the hope that it will be useful, |
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| 13 | #but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 14 | #MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 15 | #GNU General Public License for more details. |
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| 16 | # |
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| 17 | #You should have received a copy of the GNU General Public License |
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| 18 | #along with GNU Fortran; see the file COPYING. If not, write to |
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| 19 | #the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA |
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| 20 | #02111-1307, USA. |
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| 21 | |
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| 22 | AC_PREREQ(2.12.1) |
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| 23 | AC_INIT(getarg_.c) |
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| 24 | |
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| 25 | dnl Checks for programs. |
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[16959] | 26 | |
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| 27 | dnl FIXME AC_PROG_CC wants CC to be able to link things, but it may |
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| 28 | dnl not be able to. |
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| 29 | define([AC_PROG_CC_WORKS],[]) |
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| 30 | |
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[14547] | 31 | # For g77 we'll set CC to point at the built gcc, but this will get it into |
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| 32 | # the makefiles |
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| 33 | AC_PROG_CC |
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| 34 | |
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[18473] | 35 | LIBTOOL='$(SHELL) ../libtool' |
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| 36 | AC_SUBST(LIBTOOL) |
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| 37 | |
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[14547] | 38 | test "$AR" || AR=ar |
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| 39 | AC_SUBST(AR) |
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[18473] | 40 | if test "$RANLIB"; then : |
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| 41 | AC_SUBST(RANLIB) |
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| 42 | else |
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| 43 | AC_PROG_RANLIB |
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| 44 | fi |
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[14547] | 45 | AC_PROG_MAKE_SET |
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| 46 | |
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| 47 | dnl Checks for libraries. |
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| 48 | |
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| 49 | dnl Checks for header files. |
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| 50 | # Sanity check for the cross-compilation case: |
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| 51 | AC_CHECK_HEADER(stdio.h,:, |
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| 52 | [AC_MSG_ERROR([Can't find stdio.h. |
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| 53 | You must have a usable C system for the target already installed, at least |
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| 54 | including headers and, preferably, the library, before you can configure |
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| 55 | the G77 runtime system. If necessary, install gcc now with \`LANGUAGES=c', |
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| 56 | then the target library, then build with \`LANGUAGES=f77'.])]) |
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| 57 | |
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| 58 | AC_HEADER_STDC |
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| 59 | dnl We could do this if we didn't know we were using gcc |
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| 60 | dnl AC_MSG_CHECKING(for prototype-savvy compiler) |
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| 61 | dnl AC_CACHE_VAL(g77_cv_sys_proto, |
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| 62 | dnl [AC_TRY_LINK(, |
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| 63 | dnl dnl looks screwy because TRY_LINK expects a function body |
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| 64 | dnl [return 0;} int foo (int * bar) {], |
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| 65 | dnl g77_cv_sys_proto=yes, |
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| 66 | dnl [g77_cv_sys_proto=no |
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| 67 | dnl AC_DEFINE(KR_headers)])]) |
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| 68 | dnl AC_MSG_RESULT($g77_cv_sys_proto) |
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| 69 | |
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| 70 | AC_MSG_CHECKING(for posix) |
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| 71 | AC_CACHE_VAL(g77_cv_header_posix, |
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| 72 | AC_EGREP_CPP(yes, |
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| 73 | [#include <sys/types.h> |
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| 74 | #include <unistd.h> |
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| 75 | #ifdef _POSIX_VERSION |
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| 76 | yes |
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| 77 | #endif |
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| 78 | ], |
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| 79 | g77_cv_header_posix=yes, |
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| 80 | g77_cv_header_posix=no)) |
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| 81 | AC_MSG_RESULT($g77_cv_header_posix) |
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| 82 | |
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| 83 | # We can rely on the GNU library being posix-ish. I guess checking the |
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| 84 | # header isn't actually like checking the functions, though... |
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| 85 | AC_MSG_CHECKING(for GNU library) |
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| 86 | AC_CACHE_VAL(g77_cv_lib_gnu, |
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| 87 | AC_EGREP_CPP(yes, |
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| 88 | [#include <stdio.h> |
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| 89 | #ifdef __GNU_LIBRARY__ |
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| 90 | yes |
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| 91 | #endif |
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| 92 | ], |
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| 93 | g77_cv_lib_gnu=yes, g77_cv_lib_gnu=no)) |
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| 94 | AC_MSG_RESULT($g77_cv_lib_gnu) |
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| 95 | |
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| 96 | dnl Checks for library functions. |
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| 97 | AC_TYPE_SIGNAL |
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| 98 | # we'll get atexit by default |
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| 99 | if test $ac_cv_header_stdc != yes; then |
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| 100 | AC_CHECK_FUNC(atexit, |
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| 101 | AC_DEFINE(onexit,atexit),dnl just in case |
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| 102 | [AC_DEFINE(NO_ONEXIT) |
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| 103 | AC_CHECK_FUNC(onexit,, |
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| 104 | [AC_CHECK_FUNC(on_exit, |
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| 105 | AC_DEFINE(onexit,on_exit),)])]) |
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| 106 | else true |
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| 107 | fi |
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| 108 | |
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| 109 | dnl perhaps should check also for remainder |
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| 110 | dnl Unfortunately, the message implies we're just checking for -lm... |
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| 111 | AC_CHECK_LIB(m,drem,AC_DEFINE(IEEE_drem)) |
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| 112 | |
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| 113 | AC_DEFINE(Skip_f2c_Undefs) |
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[16959] | 114 | AC_DEFINE(IEEE_COMPLEX_DIVIDE) |
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[14547] | 115 | |
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| 116 | AC_OUTPUT(Makefile) |
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| 117 | |
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| 118 | dnl Local Variables: |
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| 119 | dnl comment-start: "dnl " |
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| 120 | dnl comment-end: "" |
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| 121 | dnl comment-start-skip: "\\bdnl\\b\\s *" |
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| 122 | dnl End: |
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