/usr/share/aclocal/libaal.m4 is in libaal-dev 1.0.6-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 | # This file is a part of libaal package
# Copyright (C) 2001, 2002, 2003 by Hans Reiser, licensing governed by
# libaal/COPYING.
dnl Usage:
dnl AC_CHECK_LIBAAL([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
dnl
dnl Example:
dnl AC_CHECK_LIBAAL(0.3.0, , [AC_MSG_ERROR([libaal >= 0.3.0 not installed - please install first])])
dnl
dnl Adds the required libraries to $AAL_LIBS and does an
dnl AC_SUBST(AAL_LIBS)
AC_DEFUN([AC_CHECK_LIBAAL],
[
dnl save LIBS
saved_LIBS="$LIBS"
dnl Check for headers and library
AC_CHECK_HEADER(aal/libaal.h, ,
[AC_MSG_ERROR([<aal/libaal.h> not found; install libaal])]
$3)
AC_CHECK_LIB(aal, aal_device_open, ,
[AC_MSG_ERROR([libaal not found; install libaal available at \
http://www.namesys.com/snapshots/])]
$3)
AC_MSG_CHECKING(for libaal version >= $1)
AC_TRY_LINK_FUNC(libaal_version,,
AC_MSG_RESULT(failed)
AC_MSG_ERROR([libaal can't execute test]))
dnl Get major, minor, and micro version from arg MINIMUM-VERSION
libaal_config_major_version=`echo $1 | \
sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
libaal_config_minor_version=`echo $1 | \
sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
libaal_config_micro_version=`echo $1 | \
sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`
dnl Compare MINIMUM-VERSION with libaal version
AC_TRY_RUN([
#include <stdio.h>
#include <stdlib.h>
#include <aal/libaal.h>
int main() {
const char *version;
int major, minor, micro;
if (!(version = libaal_version()))
exit(1);
if (sscanf(version, "%d.%d.%d", &major, &minor, µ) != 3) {
printf("%s, bad version string\n", version);
exit(1);
}
if ((major >= $libaal_config_major_version) &&
((major == $libaal_config_major_version) &&
(minor >= $libaal_config_minor_version)) &&
((major == $libaal_config_major_version) &&
(minor == $libaal_config_minor_version) &&
(micro >= $libaal_config_micro_version)))
{
return 0;
} else {
printf("\nAn old version of libaal (%s) was found.\n",
version);
printf("You need a version of libaal newer than or "
"equal to %d.%d.%d.\n", $libaal_config_major_version,
$libaal_config_minor_version, $libaal_config_micro_version);
printf("You can get it at http://www.namesys.com/snapshots\n");
return 1;
}
}
],
AC_MSG_RESULT(yes),
AC_MSG_RESULT(no) ; $3,
[echo $ac_n "cross compiling; assumed OK... $ac_c"])
dnl restore orignial LIBS and set @AAL_LIBS@
AAL_LIBS="$LIBS"
LIBS="$saved_LIBS"
AC_SUBST(AAL_LIBS)
dnl Execute ACTION-IF-FOUND
$2
])
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