path-sandbox/trunk/configure.ac

AC_PREREQ([2.61])
AC_INIT([sandbox], [1.3.1], [sandbox@gentoo.org])
AM_INIT_AUTOMAKE
AC_CONFIG_HEADER([config.h])

dnl Checks for programs.
AC_PROG_CC
AM_PROG_CC_C_O
AC_ISC_POSIX
AC_PROG_INSTALL
AC_PROG_MAKE_SET
AC_PROG_AWK
AC_CHECK_PROGS([READELF], [readelf eu-readelf], [false])
AM_MISSING_PROG([AUTOM4TE], [autom4te])

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 \
        elf.h \
        errno.h \
        execinfo.h \
        fcntl.h \
        libgen.h \
        limits.h \
        memory.h \
        signal.h \
        stdarg.h \
        stdbool.h \
        stddef.h \
        stdio.h \
        stdlib.h \
        string.h \
        strings.h \
        syscall.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_ONCE([ \
        backtrace \
        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])

CPPFLAGS="$CPPFLAGS -D_REENTRANT"
if test "$GCC" = yes; then
        CFLAGS="$CFLAGS -Wall"
fi

AC_CONFIG_TESTDIR([tests])

AC_OUTPUT([
        Makefile
        scripts/Makefile
        etc/Makefile
        data/Makefile
        libsbutil/Makefile
        libsandbox/Makefile
        src/Makefile
        tests/atlocal
        tests/Makefile
        tests/package.m4
])
1	vapier	377	AC_PREREQ([2.61])
2	vapier	428	AC_INIT([sandbox], [1.3.1], [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	vapier	412	AM_PROG_CC_C_O
9	azarah	29	AC_ISC_POSIX
10			AC_PROG_INSTALL
11			AC_PROG_MAKE_SET
12			AC_PROG_AWK
13	azarah	236	AC_CHECK_PROGS([READELF], [readelf eu-readelf], [false])
14	vapier	405	AM_MISSING_PROG([AUTOM4TE], [autom4te])
15	azarah	29
16	vapier	21	AC_ENABLE_SHARED
17			AC_DISABLE_STATIC
18	vapier	61	dnl Next four lines is a hack to prevent libtool checking for CXX/F77
19	azarah	56	m4_undefine([AC_PROG_CXX])
20			m4_defun([AC_PROG_CXX],[])
21			m4_undefine([AC_PROG_F77])
22			m4_defun([AC_PROG_F77],[])
23	ferringb	2	AC_PROG_LIBTOOL
24
25			AC_PREFIX_DEFAULT([/usr])
26	azarah	29
27	vapier	61	dnl Checks for libraries.
28			dnl Checks for header files.
29	ferringb	2	AC_FUNC_ALLOCA
30			AC_HEADER_DIRENT
31			AC_HEADER_STDC
32			AC_HEADER_SYS_WAIT
33	vapier	370	AC_CHECK_HEADERS_ONCE([ \
34			dirent.h \
35			dlfcn.h \
36	vapier	396	elf.h \
37	vapier	370	errno.h \
38	vapier	396	execinfo.h \
39	vapier	370	fcntl.h \
40			libgen.h \
41			limits.h \
42			memory.h \
43			signal.h \
44			stdarg.h \
45	vapier	396	stdbool.h \
46	vapier	370	stddef.h \
47			stdio.h \
48			stdlib.h \
49			string.h \
50			strings.h \
51	vapier	405	syscall.h \
52	vapier	370	unistd.h \
53			utime.h \
54			sys/file.h \
55			sys/mman.h \
56			sys/param.h \
57			sys/stat.h \
58			sys/time.h \
59			sys/types.h \
60			sys/wait.h \
61	vapier	21	])
62	ferringb	2
63	vapier	61	dnl Checks for typedefs, structures, and compiler characteristics.
64	ferringb	2	AC_C_CONST
65			AC_TYPE_UID_T
66			AC_TYPE_MODE_T
67			AC_TYPE_SIZE_T
68			AC_CHECK_TYPES([ptrdiff_t])
69
70	vapier	61	dnl Checks for library functions.
71	ferringb	2	AC_FUNC_CHOWN
72			AC_FUNC_FORK
73			AC_FUNC_LSTAT
74			AC_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK
75			AC_TYPE_SIGNAL
76			AC_FUNC_STAT
77	vapier	396	AC_CHECK_FUNCS_ONCE([ \
78			backtrace \
79			ftruncate \
80			getcwd \
81			lchown \
82			memmove \
83			memcpy \
84			memset \
85			mkdir \
86			pathconf \
87			realpath \
88			rmdir \
89			setenv \
90			strcasecmp \
91			strchr \
92			strdup \
93			strerror \
94			strndup \
95			strrchr \
96			strspn \
97			strstr \
98	vapier	356	strtok_r \
99	vapier	21	])
100	azarah	278	dnl For librcutil
101			AC_CHECK_FUNCS([remove])
102	ferringb	2
103	azarah	278	dnl Check if gcc provides va_copy or __va_copy (for librcutil)
104			AC_MSG_CHECKING([for va_copy])
105			AC_TRY_COMPILE([
106			#include <stdarg.h>
107			], [
108			va_list ap, aq;
109			va_copy(ap, aq);
110			],
111			[va_copy="va_copy"],
112			[AC_TRY_COMPILE([
113			#include <stdarg.h>
114			], [
115			va_list ap, aq;
116			__va_copy(ap, aq);
117			],
118			[va_copy="__va_copy"],
119			[AC_MSG_ERROR([Unable to determine name of va_copy macro])]
120			)]
121			)
122			AC_MSG_RESULT([$va_copy])
123			if test x"$va_copy" != xva_copy ; then
124			AC_DEFINE_UNQUOTED([va_copy], [$va_copy],
125			[Define to name of va_copy macro proviced by gcc if its not `va_copy'.]
126			)
127			fi
128
129	vapier	243	dnl Verify people aren't doing stupid shit
130			if test x"$enable_static" != xno ; then
131			AC_MSG_ERROR([dont be a Kumba, building a libsandbox.a is stupid])
132			fi
133			if test x"$enable_shared" != xyes ; then
134			AC_MSG_ERROR([dont be a Kumba, omitting a libsandbox.so is stupid])
135			fi
136			if echo $CFLAGS \| $EGREP -e -static >/dev/null 2>&1; then
137			AC_MSG_ERROR([dont be a Kumba, using -static in CFLAGS is stupid])
138			fi
139			if echo $LDFLAGS \| $EGREP -e -static >/dev/null 2>&1; then
140			AC_MSG_ERROR([dont be a Kumba, using -static in LDFLAGS is stupid])
141			fi
142
143	azarah	218	dnl Some libc's like those on bsd have dlopen() in libc, and not libdl
144			AC_CHECK_LIB([dl], [dlopen],
145	azarah	234	[have_libdl="yes"],
146			[have_libdl="no"]
147	azarah	218	)
148			if test x"$have_libdl" = xyes ; then
149	azarah	234	LIBDL="-ldl"
150			AC_SUBST([LIBDL])
151			DL_LIB="dl"
152	azarah	218	else
153	azarah	234	DL_LIB="c"
154			AC_CHECK_LIB([c], [dlopen],
155			[],
156			[AC_MSG_ERROR([Unable to determine library providing dlopen])]
157			)
158	azarah	218	fi
159
160	vapier	62	dnl uClibc doesn't currently provide dlvsym() so lets
161			dnl verify the toolchain supports it
162	azarah	218	AC_CHECK_LIB([$DL_LIB], [dlvsym],
163	azarah	234	[AC_DEFINE([HAVE_DLVSYM], [1], [libdl supports dlvsym])],
164			[AC_DEFINE([HAVE_DLVSYM], [0], [libdl does not support dlvsym])]
165	vapier	62	)
166
167	vapier	23	dnl when using libc5, (f)trucate's offset argument type is size_t with
168			dnl libc5, but it's off_t with libc6 (glibc2).
169	azarah	180	AC_MSG_CHECKING([truncate argument type])
170			TRUNC_ARG_TYPE=`echo '#include <unistd.h>' \| $CC -E - \| grep -q 'truncate.*size_t'`
171			if test "$TRUNC_ARG_TYPE"x != x ; then
172	azarah	234	AC_MSG_RESULT([size_t])
173			AC_DEFINE([TRUNCATE_T], [size_t], [truncate arg type])
174	vapier	23	else
175	azarah	234	AC_MSG_RESULT([off_t])
176			AC_DEFINE([TRUNCATE_T], [off_t], [truncate arg type])
177	vapier	23	fi
178
179	azarah	220	dnl Check if libc provides RTLD_NEXT
180			AC_MSG_CHECKING([for RTLD_NEXT])
181	azarah	216	AC_TRY_COMPILE([
182	azarah	234	#define _GNU_SOURCE
183			#include <dlfcn.h>
184			], [
185			#if !defined(RTLD_NEXT)
186			# error no RTLD_NEXT
187			#endif
188			],
189			[have_rtld_next="yes"],
190			[have_rtld_next="no"]
191	azarah	217	)
192	azarah	220	AC_MSG_RESULT([$have_rtld_next])
193	azarah	235	if test x"$have_rtld_next" = xyes ; then
194	vapier	370	CPPFLAGS="$CPPFLAGS -D_GNU_SOURCE"
195	azarah	235	AC_DEFINE([HAVE_RTLD_NEXT], [1], [Have RTLD_NEXT enabled libc])
196			fi
197	azarah	216
198	vapier	53	dnl we need to handle symbols differently based upon their version,
199			dnl but we have to know which symbols the libc supports first
200	azarah	180	AC_MSG_CHECKING([libc path])
201	vapier	23	echo "int main(void) { return 0; }" > libctest.c
202	vapier	356	$CC $CFLAGS $CPPFLAGS $LDFLAGS -Wl,-verbose -o libctest libctest.c > libctest.log 2>&1
203	vapier	238	cat libctest.log 1>&AS_MESSAGE_LOG_FD
204	vapier	356	LIBC_PATH=$(
205			$AWK '/attempt to open/ { if (($4 ~ /\/libc\.so/) && ($5 == "succeeded")) LIBC = $4; }; END {print LIBC}' libctest.log
206			)
207	azarah	234	rm -f libctest*
208	vapier	239	if test x"$LIBC_PATH" = x \|\| ! test -r "$LIBC_PATH" ; then
209	vapier	238	AC_MSG_ERROR([Unable to determine LIBC PATH ($LIBC_PATH)])
210	vapier	53	fi
211	azarah	180	AC_MSG_RESULT([$LIBC_PATH])
212			AC_SUBST([LIBC_PATH])
213	vapier	23
214	vapier	53	dnl when intercepting libc calls, we have to know the name of the
215			dnl libc to load and search with dl*() calls
216	azarah	180	AC_MSG_CHECKING([libc version])
217	vapier	53	dnl the sed script at the end here looks funny but it's ok ...
218	azarah	234	echo "int main(void) { return 0; }" > libctest.c
219	vapier	356	$CC $CFLAGS $CPPFLAGS $LDFLAGS -Wall -o libctest libctest.c
220			LIBC_VERSION=$(
221			$READELF -d libctest \| \
222			grep NEEDED.*libc\\.so \| \
223			$AWK '{print $NF}' \| sed -e ['s:\[::' -e 's:\]::']
224			)
225	azarah	234	rm -f libctest*
226	vapier	53	if test "$LIBC_VERSION"x = x ; then
227	azarah	234	AC_MSG_ERROR([Unable to determine LIBC VERSION])
228	vapier	53	fi
229	azarah	180	AC_MSG_RESULT([$LIBC_VERSION])
230	azarah	233	AC_DEFINE_UNQUOTED([LIBC_VERSION], ["$LIBC_VERSION"], [Name of libc to hook into])
231	vapier	53
232	vapier	356	dnl We add to CPPFLAGS rather than doing AC_DEFINE_UNQUOTED
233			dnl so we dont have to worry about fully expanding all of
234			dnl the variables ($sysconfdir defaults to "$prefix/etc")
235	azarah	309	SANDBOX_DEFINES='-DETCDIR="\"$(sysconfdir)\"" -DLIBSANDBOX_PATH="\"$(libdir)\"" -DSANDBOX_BASHRC_PATH="\"$(pkgdatadir)\""'
236			AC_SUBST([SANDBOX_DEFINES])
237
238	vapier	404	CPPFLAGS="$CPPFLAGS -D_REENTRANT"
239			if test "$GCC" = yes; then
240			CFLAGS="$CFLAGS -Wall"
241			fi
242
243	vapier	405	AC_CONFIG_TESTDIR([tests])
244
245	azarah	183	AC_OUTPUT([
246	vapier	356	Makefile
247			scripts/Makefile
248			etc/Makefile
249			data/Makefile
250			libsbutil/Makefile
251			libsandbox/Makefile
252			src/Makefile
253	vapier	405	tests/atlocal
254			tests/Makefile
255			tests/package.m4
256	azarah	183	])
Name	Value
svn:eol-style	native
svn:keywords	Author Date Id Revision