path-sandbox/trunk/configure.ac

AC_PREREQ([2.59])
AC_INIT([sandbox], [1.2.17], [sandbox@gentoo.org])
AM_INIT_AUTOMAKE
AC_CONFIG_HEADER([config.h])

dnl Checks for programs.
AC_PROG_CC
AC_ISC_POSIX
AC_PROG_INSTALL
AC_PROG_MAKE_SET
AC_PROG_AWK
AC_CHECK_PROGS([READELF], [readelf], [false])

AC_ENABLE_SHARED
AC_DISABLE_STATIC
dnl Next four lines is a hack to prevent libtool checking for CXX/F77
m4_undefine([AC_PROG_CXX])
m4_defun([AC_PROG_CXX],[])
m4_undefine([AC_PROG_F77])
m4_defun([AC_PROG_F77],[])
AC_PROG_LIBTOOL

AC_PREFIX_DEFAULT([/usr])

dnl Checks for libraries.
dnl Checks for header files.
AC_FUNC_ALLOCA
AC_HEADER_DIRENT
AC_HEADER_STDC
AC_HEADER_SYS_WAIT
AC_CHECK_HEADERS([ \
        fcntl.h limits.h memory.h stddef.h \
        stdlib.h string.h strings.h sys/file.h \
        sys/param.h sys/time.h unistd.h utime.h \
])

dnl Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
AC_TYPE_UID_T
AC_TYPE_MODE_T
AC_TYPE_SIZE_T
AC_CHECK_TYPES([ptrdiff_t])

dnl Checks for library functions.
AC_FUNC_CHOWN
AC_FUNC_FORK
AC_FUNC_LSTAT
AC_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK
AC_TYPE_SIGNAL
AC_FUNC_STAT
AC_CHECK_FUNCS([ \
        bzero ftruncate getcwd lchown memmove \
        mempcpy memset mkdir pathconf realpath \
        rmdir setenv strcasecmp strchr strdup \
        strerror strndup strrchr strspn strstr \
])

dnl Some libc's like those on bsd have dlopen() in libc, and not libdl
AC_CHECK_LIB([dl], [dlopen],
        [have_libdl="yes"],
        [have_libdl="no"]
)
if test x"$have_libdl" = xyes ; then
        LIBDL="-ldl"
        AC_SUBST([LIBDL])
        DL_LIB="dl"
else
        DL_LIB="c"
        AC_CHECK_LIB([c], [dlopen],
                [],
                [AC_MSG_ERROR([Unable to determine library providing dlopen])]
        )
fi

dnl uClibc doesn't currently provide dlvsym() so lets
dnl verify the toolchain supports it
AC_CHECK_LIB([$DL_LIB], [dlvsym],
        [AC_DEFINE([HAVE_DLVSYM], [1], [libdl supports dlvsym])],
        [AC_DEFINE([HAVE_DLVSYM], [0], [libdl does not support dlvsym])]
)

dnl when using libc5, (f)trucate's offset argument type is size_t with
dnl libc5, but it's off_t with libc6 (glibc2).
AC_MSG_CHECKING([truncate argument type])
TRUNC_ARG_TYPE=`echo '#include <unistd.h>' | $CC -E - | grep -q 'truncate.*size_t'`
if test "$TRUNC_ARG_TYPE"x != x ; then
        AC_MSG_RESULT([size_t])
        AC_DEFINE([TRUNCATE_T], [size_t], [truncate arg type])
else
        AC_MSG_RESULT([off_t])
        AC_DEFINE([TRUNCATE_T], [off_t], [truncate arg type])
fi

dnl Check if libc provides RTLD_NEXT
AC_MSG_CHECKING([for RTLD_NEXT])
AC_TRY_COMPILE([
#define _GNU_SOURCE
#include <dlfcn.h>
], [
#if !defined(RTLD_NEXT)
# error no RTLD_NEXT
#endif

int
main (void)
{
  return 0;
}
],
        [have_rtld_next="yes"],
        [have_rtld_next="no"]
)
AC_MSG_RESULT([$have_rtld_next])
AM_CONDITIONAL([HAVE_RTLD_NEXT], [test x"$have_rtld_next" = xyes])

dnl we need to handle symbols differently based upon their version, 
dnl but we have to know which symbols the libc supports first
AC_MSG_CHECKING([libc path])
echo "int main(void) { return 0; }" > libctest.c
$CC -Wall -o libctest libctest.c
LIBC_PATH=`$CC $CFLAGS -Wl,-verbose -o libctest libctest.c 2>&1 | \
        $AWK '/attempt to open/ { if (($4 ~ /\/libc\.so/) && ($5 == "succeeded")) LIBC = $4; }; END {print LIBC}'`
rm -f libctest.c
if test "$LIBC_PATH"x = x || ! test -r "$LIBC_PATH"; then
        AC_MSG_ERROR([Unable to determine LIBC PATH])
fi
AC_MSG_RESULT([$LIBC_PATH])
AC_SUBST([LIBC_PATH])

dnl when intercepting libc calls, we have to know the name of the 
dnl libc to load and search with dl*() calls
AC_MSG_CHECKING([libc version])
dnl the sed script at the end here looks funny but it's ok ...
dnl they're m4 escape sequences for left and right brackets
LIBC_VERSION=`readelf -d libctest | grep NEEDED.*libc\\.so | $AWK '{print $NF}' | sed -e 's:\@<:@::' -e 's:\@:>@::'`
if test "$LIBC_VERSION"x = x ; then
        AC_MSG_ERROR([Unable to determine LIBC VERSION])
fi
rm -f libctest
AC_MSG_RESULT([$LIBC_VERSION])
AC_DEFINE_UNQUOTED([LIBC_VERSION], ["$LIBC_VERSION"], [name of libc to hook into])

dnl check if we have 32bit or 64bit output
AC_ARG_ENABLE([multilib],
        AS_HELP_STRING([--enable-multilib],
                [enable building for multilib setups (default=disabled)]),
        [enable_multilib="$enableval"],
        [enable_multilib="no"]
)

if test x"$enable_multilib" != xno ; then
        AC_DEFINE_UNQUOTED([SB_HAVE_MULTILIB], [1], [have multilib enabled system])
fi

AC_OUTPUT([
        Makefile
        scripts/Makefile
        data/Makefile
        src/Makefile
])
1	azarah	180	AC_PREREQ([2.59])
2	azarah	229	AC_INIT([sandbox], [1.2.17], [sandbox@gentoo.org])
3	ferringb	2	AM_INIT_AUTOMAKE
4	ferringb	16	AC_CONFIG_HEADER([config.h])
5	ferringb	2
6	vapier	61	dnl Checks for programs.
7	ferringb	2	AC_PROG_CC
8	azarah	29	AC_ISC_POSIX
9			AC_PROG_INSTALL
10			AC_PROG_MAKE_SET
11			AC_PROG_AWK
12	azarah	183	AC_CHECK_PROGS([READELF], [readelf], [false])
13	azarah	29
14	vapier	21	AC_ENABLE_SHARED
15			AC_DISABLE_STATIC
16	vapier	61	dnl Next four lines is a hack to prevent libtool checking for CXX/F77
17	azarah	56	m4_undefine([AC_PROG_CXX])
18			m4_defun([AC_PROG_CXX],[])
19			m4_undefine([AC_PROG_F77])
20			m4_defun([AC_PROG_F77],[])
21	ferringb	2	AC_PROG_LIBTOOL
22
23			AC_PREFIX_DEFAULT([/usr])
24	azarah	29
25	vapier	61	dnl Checks for libraries.
26			dnl Checks for header files.
27	ferringb	2	AC_FUNC_ALLOCA
28			AC_HEADER_DIRENT
29			AC_HEADER_STDC
30			AC_HEADER_SYS_WAIT
31	vapier	21	AC_CHECK_HEADERS([ \
32	azarah	180	fcntl.h limits.h memory.h stddef.h \
33			stdlib.h string.h strings.h sys/file.h \
34			sys/param.h sys/time.h unistd.h utime.h \
35	vapier	21	])
36	ferringb	2
37	vapier	61	dnl Checks for typedefs, structures, and compiler characteristics.
38	ferringb	2	AC_C_CONST
39			AC_TYPE_UID_T
40			AC_TYPE_MODE_T
41			AC_TYPE_SIZE_T
42			AC_CHECK_TYPES([ptrdiff_t])
43
44	vapier	61	dnl Checks for library functions.
45	ferringb	2	AC_FUNC_CHOWN
46			AC_FUNC_FORK
47			AC_FUNC_LSTAT
48			AC_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK
49			AC_TYPE_SIGNAL
50			AC_FUNC_STAT
51	vapier	21	AC_CHECK_FUNCS([ \
52	azarah	180	bzero ftruncate getcwd lchown memmove \
53			mempcpy memset mkdir pathconf realpath \
54			rmdir setenv strcasecmp strchr strdup \
55			strerror strndup strrchr strspn strstr \
56	vapier	21	])
57	ferringb	2
58	azarah	218	dnl Some libc's like those on bsd have dlopen() in libc, and not libdl
59			AC_CHECK_LIB([dl], [dlopen],
60			[have_libdl="yes"],
61			[have_libdl="no"]
62			)
63			if test x"$have_libdl" = xyes ; then
64			LIBDL="-ldl"
65			AC_SUBST([LIBDL])
66			DL_LIB="dl"
67			else
68			DL_LIB="c"
69			AC_CHECK_LIB([c], [dlopen],
70			[],
71			[AC_MSG_ERROR([Unable to determine library providing dlopen])]
72			)
73			fi
74
75	vapier	62	dnl uClibc doesn't currently provide dlvsym() so lets
76			dnl verify the toolchain supports it
77	azarah	218	AC_CHECK_LIB([$DL_LIB], [dlvsym],
78	azarah	180	[AC_DEFINE([HAVE_DLVSYM], [1], [libdl supports dlvsym])],
79			[AC_DEFINE([HAVE_DLVSYM], [0], [libdl does not support dlvsym])]
80	vapier	62	)
81
82	vapier	23	dnl when using libc5, (f)trucate's offset argument type is size_t with
83			dnl libc5, but it's off_t with libc6 (glibc2).
84	azarah	180	AC_MSG_CHECKING([truncate argument type])
85			TRUNC_ARG_TYPE=`echo '#include <unistd.h>' \| $CC -E - \| grep -q 'truncate.*size_t'`
86			if test "$TRUNC_ARG_TYPE"x != x ; then
87			AC_MSG_RESULT([size_t])
88			AC_DEFINE([TRUNCATE_T], [size_t], [truncate arg type])
89	vapier	23	else
90	azarah	180	AC_MSG_RESULT([off_t])
91			AC_DEFINE([TRUNCATE_T], [off_t], [truncate arg type])
92	vapier	23	fi
93
94	azarah	220	dnl Check if libc provides RTLD_NEXT
95			AC_MSG_CHECKING([for RTLD_NEXT])
96	azarah	216	AC_TRY_COMPILE([
97	azarah	220	#define _GNU_SOURCE
98			#include <dlfcn.h>
99	azarah	216	], [
100	azarah	220	#if !defined(RTLD_NEXT)
101			# error no RTLD_NEXT
102	azarah	216	#endif
103
104	azarah	220	int
105			main (void)
106	azarah	216	{
107			return 0;
108			}
109	azarah	217	],
110	azarah	220	[have_rtld_next="yes"],
111			[have_rtld_next="no"]
112	azarah	217	)
113	azarah	220	AC_MSG_RESULT([$have_rtld_next])
114			AM_CONDITIONAL([HAVE_RTLD_NEXT], [test x"$have_rtld_next" = xyes])
115	azarah	216
116	vapier	53	dnl we need to handle symbols differently based upon their version,
117			dnl but we have to know which symbols the libc supports first
118	azarah	180	AC_MSG_CHECKING([libc path])
119	vapier	23	echo "int main(void) { return 0; }" > libctest.c
120	vapier	53	$CC -Wall -o libctest libctest.c
121			LIBC_PATH=`$CC $CFLAGS -Wl,-verbose -o libctest libctest.c 2>&1 \| \
122	azarah	227	$AWK '/attempt to open/ { if (($4 ~ /\/libc\.so/) && ($5 == "succeeded")) LIBC = $4; }; END {print LIBC}'`
123	azarah	75	rm -f libctest.c
124	azarah	215	if test "$LIBC_PATH"x = x \|\| ! test -r "$LIBC_PATH"; then
125	azarah	180	AC_MSG_ERROR([Unable to determine LIBC PATH])
126	vapier	53	fi
127	azarah	180	AC_MSG_RESULT([$LIBC_PATH])
128			AC_SUBST([LIBC_PATH])
129	vapier	23
130	vapier	53	dnl when intercepting libc calls, we have to know the name of the
131			dnl libc to load and search with dl*() calls
132	azarah	180	AC_MSG_CHECKING([libc version])
133	vapier	53	dnl the sed script at the end here looks funny but it's ok ...
134			dnl they're m4 escape sequences for left and right brackets
135			LIBC_VERSION=`readelf -d libctest \| grep NEEDED.*libc\\.so \| $AWK '{print $NF}' \| sed -e 's:\@<:@::' -e 's:\@:>@::'`
136			if test "$LIBC_VERSION"x = x ; then
137	azarah	180	AC_MSG_ERROR([Unable to determine LIBC VERSION])
138	vapier	53	fi
139	azarah	181	rm -f libctest
140	azarah	180	AC_MSG_RESULT([$LIBC_VERSION])
141			AC_DEFINE_UNQUOTED([LIBC_VERSION], ["$LIBC_VERSION"], [name of libc to hook into])
142	vapier	53
143	azarah	179	dnl check if we have 32bit or 64bit output
144	azarah	181	AC_ARG_ENABLE([multilib],
145			AS_HELP_STRING([--enable-multilib],
146			[enable building for multilib setups (default=disabled)]),
147			[enable_multilib="$enableval"],
148			[enable_multilib="no"]
149			)
150
151	azarah	216	if test x"$enable_multilib" != xno ; then
152	azarah	181	AC_DEFINE_UNQUOTED([SB_HAVE_MULTILIB], [1], [have multilib enabled system])
153	azarah	179	fi
154
155	azarah	183	AC_OUTPUT([
156			Makefile
157			scripts/Makefile
158			data/Makefile
159			src/Makefile
160			])
Name	Value
svn:eol-style	native
svn:keywords	Author Date Id Revision