path-sandbox/trunk/configure.ac

AC_PREREQ([2.61])
AC_INIT([sandbox], [1.3.0], [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 eu-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_ONCE([ \
        dirent.h \
        dlfcn.h \
        errno.h \
        fcntl.h \
        libgen.h \
        limits.h \
        memory.h \
        signal.h \
        stdarg.h \
        stddef.h \
        stdio.h \
        stdlib.h \
        string.h \
        strings.h \
        unistd.h \
        utime.h \
        sys/file.h \
        sys/mman.h \
        sys/param.h \
        sys/stat.h \
        sys/time.h \
        sys/types.h \
        sys/wait.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 \
        memcpy memset mkdir pathconf realpath \
        rmdir setenv strcasecmp strchr strdup \
        strerror strndup strrchr strspn strstr \
        strtok_r \
])
dnl For librcutil
AC_CHECK_FUNCS([remove])

dnl Check if gcc provides va_copy or __va_copy (for librcutil)
AC_MSG_CHECKING([for va_copy])
AC_TRY_COMPILE([
    #include <stdarg.h>
  ], [
    va_list ap, aq;
    va_copy(ap, aq);
  ],
  [va_copy="va_copy"],
  [AC_TRY_COMPILE([
      #include <stdarg.h>
    ], [
      va_list ap, aq;
      __va_copy(ap, aq);
    ],
    [va_copy="__va_copy"],
    [AC_MSG_ERROR([Unable to determine name of va_copy macro])]
  )]
)
AC_MSG_RESULT([$va_copy])
if test x"$va_copy" != xva_copy ; then
  AC_DEFINE_UNQUOTED([va_copy], [$va_copy],
    [Define to name of va_copy macro proviced by gcc if its not `va_copy'.]
  )
fi

dnl Verify people aren't doing stupid shit
if test x"$enable_static" != xno ; then
  AC_MSG_ERROR([dont be a Kumba, building a libsandbox.a is stupid])
fi
if test x"$enable_shared" != xyes ; then
  AC_MSG_ERROR([dont be a Kumba, omitting a libsandbox.so is stupid])
fi
if echo $CFLAGS | $EGREP -e -static  >/dev/null 2>&1; then
  AC_MSG_ERROR([dont be a Kumba, using -static in CFLAGS is stupid])
fi
if echo $LDFLAGS | $EGREP -e -static  >/dev/null 2>&1; then
  AC_MSG_ERROR([dont be a Kumba, using -static in LDFLAGS is stupid])
fi

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
  ],
  [have_rtld_next="yes"],
  [have_rtld_next="no"]
)
AC_MSG_RESULT([$have_rtld_next])
if test x"$have_rtld_next" = xyes ; then
  CPPFLAGS="$CPPFLAGS -D_GNU_SOURCE"
  AC_DEFINE([HAVE_RTLD_NEXT], [1], [Have RTLD_NEXT enabled libc])
fi

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 $CFLAGS $CPPFLAGS $LDFLAGS -Wl,-verbose -o libctest libctest.c > libctest.log 2>&1
cat libctest.log 1>&AS_MESSAGE_LOG_FD
LIBC_PATH=$(
        $AWK '/attempt to open/ { if (($4 ~ /\/libc\.so/) && ($5 == "succeeded")) LIBC = $4; }; END {print LIBC}' libctest.log
)
rm -f libctest*
if test x"$LIBC_PATH" = x || ! test -r "$LIBC_PATH" ; then
  AC_MSG_ERROR([Unable to determine LIBC PATH ($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 ...
echo "int main(void) { return 0; }" > libctest.c
$CC $CFLAGS $CPPFLAGS $LDFLAGS -Wall -o libctest libctest.c
LIBC_VERSION=$(
        $READELF -d libctest | \
        grep NEEDED.*libc\\.so | \
        $AWK '{print $NF}' | sed -e ['s:\[::' -e 's:\]::']
)
rm -f libctest*
if test "$LIBC_VERSION"x = x ; then
  AC_MSG_ERROR([Unable to determine LIBC VERSION])
fi
AC_MSG_RESULT([$LIBC_VERSION])
AC_DEFINE_UNQUOTED([LIBC_VERSION], ["$LIBC_VERSION"], [Name of libc to hook into])

dnl We add to CPPFLAGS rather than doing AC_DEFINE_UNQUOTED
dnl so we dont have to worry about fully expanding all of
dnl the variables ($sysconfdir defaults to "$prefix/etc")
SANDBOX_DEFINES='-DETCDIR="\"$(sysconfdir)\"" -DLIBSANDBOX_PATH="\"$(libdir)\"" -DSANDBOX_BASHRC_PATH="\"$(pkgdatadir)\""'
AC_SUBST([SANDBOX_DEFINES])

AC_OUTPUT([
        Makefile
        scripts/Makefile
        etc/Makefile
        data/Makefile
        libsbutil/Makefile
        libsandbox/Makefile
        src/Makefile
])
1	vapier	377	AC_PREREQ([2.61])
2			AC_INIT([sandbox], [1.3.0], [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	236	AC_CHECK_PROGS([READELF], [readelf eu-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	370	AC_CHECK_HEADERS_ONCE([ \
32			dirent.h \
33			dlfcn.h \
34			errno.h \
35			fcntl.h \
36			libgen.h \
37			limits.h \
38			memory.h \
39			signal.h \
40			stdarg.h \
41			stddef.h \
42			stdio.h \
43			stdlib.h \
44			string.h \
45			strings.h \
46			unistd.h \
47			utime.h \
48			sys/file.h \
49			sys/mman.h \
50			sys/param.h \
51			sys/stat.h \
52			sys/time.h \
53			sys/types.h \
54			sys/wait.h \
55	vapier	21	])
56	ferringb	2
57	vapier	61	dnl Checks for typedefs, structures, and compiler characteristics.
58	ferringb	2	AC_C_CONST
59			AC_TYPE_UID_T
60			AC_TYPE_MODE_T
61			AC_TYPE_SIZE_T
62			AC_CHECK_TYPES([ptrdiff_t])
63
64	vapier	61	dnl Checks for library functions.
65	ferringb	2	AC_FUNC_CHOWN
66			AC_FUNC_FORK
67			AC_FUNC_LSTAT
68			AC_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK
69			AC_TYPE_SIGNAL
70			AC_FUNC_STAT
71	vapier	21	AC_CHECK_FUNCS([ \
72	vapier	356	bzero ftruncate getcwd lchown memmove \
73			memcpy memset mkdir pathconf realpath \
74			rmdir setenv strcasecmp strchr strdup \
75			strerror strndup strrchr strspn strstr \
76			strtok_r \
77	vapier	21	])
78	azarah	278	dnl For librcutil
79			AC_CHECK_FUNCS([remove])
80	ferringb	2
81	azarah	278	dnl Check if gcc provides va_copy or __va_copy (for librcutil)
82			AC_MSG_CHECKING([for va_copy])
83			AC_TRY_COMPILE([
84			#include <stdarg.h>
85			], [
86			va_list ap, aq;
87			va_copy(ap, aq);
88			],
89			[va_copy="va_copy"],
90			[AC_TRY_COMPILE([
91			#include <stdarg.h>
92			], [
93			va_list ap, aq;
94			__va_copy(ap, aq);
95			],
96			[va_copy="__va_copy"],
97			[AC_MSG_ERROR([Unable to determine name of va_copy macro])]
98			)]
99			)
100			AC_MSG_RESULT([$va_copy])
101			if test x"$va_copy" != xva_copy ; then
102			AC_DEFINE_UNQUOTED([va_copy], [$va_copy],
103			[Define to name of va_copy macro proviced by gcc if its not `va_copy'.]
104			)
105			fi
106
107	vapier	243	dnl Verify people aren't doing stupid shit
108			if test x"$enable_static" != xno ; then
109			AC_MSG_ERROR([dont be a Kumba, building a libsandbox.a is stupid])
110			fi
111			if test x"$enable_shared" != xyes ; then
112			AC_MSG_ERROR([dont be a Kumba, omitting a libsandbox.so is stupid])
113			fi
114			if echo $CFLAGS \| $EGREP -e -static >/dev/null 2>&1; then
115			AC_MSG_ERROR([dont be a Kumba, using -static in CFLAGS is stupid])
116			fi
117			if echo $LDFLAGS \| $EGREP -e -static >/dev/null 2>&1; then
118			AC_MSG_ERROR([dont be a Kumba, using -static in LDFLAGS is stupid])
119			fi
120
121	azarah	218	dnl Some libc's like those on bsd have dlopen() in libc, and not libdl
122			AC_CHECK_LIB([dl], [dlopen],
123	azarah	234	[have_libdl="yes"],
124			[have_libdl="no"]
125	azarah	218	)
126			if test x"$have_libdl" = xyes ; then
127	azarah	234	LIBDL="-ldl"
128			AC_SUBST([LIBDL])
129			DL_LIB="dl"
130	azarah	218	else
131	azarah	234	DL_LIB="c"
132			AC_CHECK_LIB([c], [dlopen],
133			[],
134			[AC_MSG_ERROR([Unable to determine library providing dlopen])]
135			)
136	azarah	218	fi
137
138	vapier	62	dnl uClibc doesn't currently provide dlvsym() so lets
139			dnl verify the toolchain supports it
140	azarah	218	AC_CHECK_LIB([$DL_LIB], [dlvsym],
141	azarah	234	[AC_DEFINE([HAVE_DLVSYM], [1], [libdl supports dlvsym])],
142			[AC_DEFINE([HAVE_DLVSYM], [0], [libdl does not support dlvsym])]
143	vapier	62	)
144
145	vapier	23	dnl when using libc5, (f)trucate's offset argument type is size_t with
146			dnl libc5, but it's off_t with libc6 (glibc2).
147	azarah	180	AC_MSG_CHECKING([truncate argument type])
148			TRUNC_ARG_TYPE=`echo '#include <unistd.h>' \| $CC -E - \| grep -q 'truncate.*size_t'`
149			if test "$TRUNC_ARG_TYPE"x != x ; then
150	azarah	234	AC_MSG_RESULT([size_t])
151			AC_DEFINE([TRUNCATE_T], [size_t], [truncate arg type])
152	vapier	23	else
153	azarah	234	AC_MSG_RESULT([off_t])
154			AC_DEFINE([TRUNCATE_T], [off_t], [truncate arg type])
155	vapier	23	fi
156
157	azarah	220	dnl Check if libc provides RTLD_NEXT
158			AC_MSG_CHECKING([for RTLD_NEXT])
159	azarah	216	AC_TRY_COMPILE([
160	azarah	234	#define _GNU_SOURCE
161			#include <dlfcn.h>
162			], [
163			#if !defined(RTLD_NEXT)
164			# error no RTLD_NEXT
165			#endif
166			],
167			[have_rtld_next="yes"],
168			[have_rtld_next="no"]
169	azarah	217	)
170	azarah	220	AC_MSG_RESULT([$have_rtld_next])
171	azarah	235	if test x"$have_rtld_next" = xyes ; then
172	vapier	370	CPPFLAGS="$CPPFLAGS -D_GNU_SOURCE"
173	azarah	235	AC_DEFINE([HAVE_RTLD_NEXT], [1], [Have RTLD_NEXT enabled libc])
174			fi
175	azarah	216
176	vapier	53	dnl we need to handle symbols differently based upon their version,
177			dnl but we have to know which symbols the libc supports first
178	azarah	180	AC_MSG_CHECKING([libc path])
179	vapier	23	echo "int main(void) { return 0; }" > libctest.c
180	vapier	356	$CC $CFLAGS $CPPFLAGS $LDFLAGS -Wl,-verbose -o libctest libctest.c > libctest.log 2>&1
181	vapier	238	cat libctest.log 1>&AS_MESSAGE_LOG_FD
182	vapier	356	LIBC_PATH=$(
183			$AWK '/attempt to open/ { if (($4 ~ /\/libc\.so/) && ($5 == "succeeded")) LIBC = $4; }; END {print LIBC}' libctest.log
184			)
185	azarah	234	rm -f libctest*
186	vapier	239	if test x"$LIBC_PATH" = x \|\| ! test -r "$LIBC_PATH" ; then
187	vapier	238	AC_MSG_ERROR([Unable to determine LIBC PATH ($LIBC_PATH)])
188	vapier	53	fi
189	azarah	180	AC_MSG_RESULT([$LIBC_PATH])
190			AC_SUBST([LIBC_PATH])
191	vapier	23
192	vapier	53	dnl when intercepting libc calls, we have to know the name of the
193			dnl libc to load and search with dl*() calls
194	azarah	180	AC_MSG_CHECKING([libc version])
195	vapier	53	dnl the sed script at the end here looks funny but it's ok ...
196	azarah	234	echo "int main(void) { return 0; }" > libctest.c
197	vapier	356	$CC $CFLAGS $CPPFLAGS $LDFLAGS -Wall -o libctest libctest.c
198			LIBC_VERSION=$(
199			$READELF -d libctest \| \
200			grep NEEDED.*libc\\.so \| \
201			$AWK '{print $NF}' \| sed -e ['s:\[::' -e 's:\]::']
202			)
203	azarah	234	rm -f libctest*
204	vapier	53	if test "$LIBC_VERSION"x = x ; then
205	azarah	234	AC_MSG_ERROR([Unable to determine LIBC VERSION])
206	vapier	53	fi
207	azarah	180	AC_MSG_RESULT([$LIBC_VERSION])
208	azarah	233	AC_DEFINE_UNQUOTED([LIBC_VERSION], ["$LIBC_VERSION"], [Name of libc to hook into])
209	vapier	53
210	vapier	356	dnl We add to CPPFLAGS rather than doing AC_DEFINE_UNQUOTED
211			dnl so we dont have to worry about fully expanding all of
212			dnl the variables ($sysconfdir defaults to "$prefix/etc")
213	azarah	309	SANDBOX_DEFINES='-DETCDIR="\"$(sysconfdir)\"" -DLIBSANDBOX_PATH="\"$(libdir)\"" -DSANDBOX_BASHRC_PATH="\"$(pkgdatadir)\""'
214			AC_SUBST([SANDBOX_DEFINES])
215
216	azarah	183	AC_OUTPUT([
217	vapier	356	Makefile
218			scripts/Makefile
219			etc/Makefile
220			data/Makefile
221			libsbutil/Makefile
222			libsandbox/Makefile
223			src/Makefile
224	azarah	183	])
Name	Value
svn:eol-style	native
svn:keywords	Author Date Id Revision