/[path-sandbox]/trunk/configure.ac
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trunk/configure.in Revision 44 trunk/configure.ac Revision 396
1AC_PREREQ(2.59) 1AC_PREREQ([2.61])
2AC_INIT(sandbox, 1.2.1, dev-portage@gentoo.org) 2AC_INIT([sandbox], [1.3.0], [sandbox@gentoo.org])
3AM_INIT_AUTOMAKE 3AM_INIT_AUTOMAKE
4AC_CONFIG_HEADER([config.h]) 4AC_CONFIG_HEADER([config.h])
5 5
6# Checks for programs. 6dnl Checks for programs.
7AC_PROG_CC 7AC_PROG_CC
8AC_ISC_POSIX 8AC_ISC_POSIX
9AC_PROG_INSTALL 9AC_PROG_INSTALL
10AC_PROG_MAKE_SET 10AC_PROG_MAKE_SET
11AC_PROG_AWK 11AC_PROG_AWK
12AC_CHECK_PROGS([READELF], [readelf eu-readelf], [false])
12 13
13AC_ENABLE_SHARED 14AC_ENABLE_SHARED
14AC_DISABLE_STATIC 15AC_DISABLE_STATIC
16dnl Next four lines is a hack to prevent libtool checking for CXX/F77
17m4_undefine([AC_PROG_CXX])
18m4_defun([AC_PROG_CXX],[])
19m4_undefine([AC_PROG_F77])
20m4_defun([AC_PROG_F77],[])
15AC_PROG_LIBTOOL 21AC_PROG_LIBTOOL
16 22
17AC_PREFIX_DEFAULT([/usr]) 23AC_PREFIX_DEFAULT([/usr])
18 24
19# Checks for libraries. 25dnl Checks for libraries.
20# Checks for header files. 26dnl Checks for header files.
21AC_FUNC_ALLOCA 27AC_FUNC_ALLOCA
22AC_HEADER_DIRENT 28AC_HEADER_DIRENT
23AC_HEADER_STDC 29AC_HEADER_STDC
24AC_HEADER_SYS_WAIT 30AC_HEADER_SYS_WAIT
25AC_CHECK_HEADERS([ \ 31AC_CHECK_HEADERS_ONCE([ \
26fcntl.h limits.h memory.h stddef.h \ 32 dirent.h \
27stdlib.h string.h strings.h sys/file.h \ 33 dlfcn.h \
28sys/param.h sys/time.h unistd.h utime.h \ 34 elf.h \
35 errno.h \
36 execinfo.h \
37 fcntl.h \
38 libgen.h \
39 limits.h \
40 memory.h \
41 signal.h \
42 stdarg.h \
43 stdbool.h \
44 stddef.h \
45 stdio.h \
46 stdlib.h \
47 string.h \
48 strings.h \
49 unistd.h \
50 utime.h \
51 sys/file.h \
52 sys/mman.h \
53 sys/param.h \
54 sys/stat.h \
55 sys/time.h \
56 sys/types.h \
57 sys/wait.h \
29]) 58])
30 59
31# Checks for typedefs, structures, and compiler characteristics. 60dnl Checks for typedefs, structures, and compiler characteristics.
32AC_C_CONST 61AC_C_CONST
33AC_TYPE_UID_T 62AC_TYPE_UID_T
34AC_TYPE_MODE_T 63AC_TYPE_MODE_T
35AC_TYPE_SIZE_T 64AC_TYPE_SIZE_T
36AC_CHECK_TYPES([ptrdiff_t]) 65AC_CHECK_TYPES([ptrdiff_t])
37 66
38# Checks for library functions. 67dnl Checks for library functions.
39AC_FUNC_CHOWN 68AC_FUNC_CHOWN
40AC_FUNC_FORK 69AC_FUNC_FORK
41AC_FUNC_LSTAT 70AC_FUNC_LSTAT
42AC_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK 71AC_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK
43AC_FUNC_MALLOC
44AC_FUNC_REALLOC
45AC_TYPE_SIGNAL 72AC_TYPE_SIGNAL
46AC_FUNC_STAT 73AC_FUNC_STAT
47AC_CHECK_FUNCS([ \ 74AC_CHECK_FUNCS_ONCE([ \
48bzero ftruncate getcwd lchown memmove \ 75 backtrace \
49mempcpy memset mkdir pathconf realpath \ 76 ftruncate \
50rmdir setenv strcasecmp strchr strdup \ 77 getcwd \
51strerror strndup strrchr strspn strstr \ 78 lchown \
79 memmove \
80 memcpy \
81 memset \
82 mkdir \
83 pathconf \
84 realpath \
85 rmdir \
86 setenv \
87 strcasecmp \
88 strchr \
89 strdup \
90 strerror \
91 strndup \
92 strrchr \
93 strspn \
94 strstr \
95 strtok_r \
52]) 96])
97dnl For librcutil
98AC_CHECK_FUNCS([remove])
53 99
54dnl 100dnl Check if gcc provides va_copy or __va_copy (for librcutil)
55dnl FIXME: the following needs to be made portable 101AC_MSG_CHECKING([for va_copy])
56dnl 102AC_TRY_COMPILE([
103 #include <stdarg.h>
104 ], [
105 va_list ap, aq;
106 va_copy(ap, aq);
107 ],
108 [va_copy="va_copy"],
109 [AC_TRY_COMPILE([
110 #include <stdarg.h>
111 ], [
112 va_list ap, aq;
113 __va_copy(ap, aq);
114 ],
115 [va_copy="__va_copy"],
116 [AC_MSG_ERROR([Unable to determine name of va_copy macro])]
117 )]
118)
119AC_MSG_RESULT([$va_copy])
120if test x"$va_copy" != xva_copy ; then
121 AC_DEFINE_UNQUOTED([va_copy], [$va_copy],
122 [Define to name of va_copy macro proviced by gcc if its not `va_copy'.]
123 )
124fi
125
126dnl Verify people aren't doing stupid shit
127if test x"$enable_static" != xno ; then
128 AC_MSG_ERROR([dont be a Kumba, building a libsandbox.a is stupid])
129fi
130if test x"$enable_shared" != xyes ; then
131 AC_MSG_ERROR([dont be a Kumba, omitting a libsandbox.so is stupid])
132fi
133if echo $CFLAGS | $EGREP -e -static >/dev/null 2>&1; then
134 AC_MSG_ERROR([dont be a Kumba, using -static in CFLAGS is stupid])
135fi
136if echo $LDFLAGS | $EGREP -e -static >/dev/null 2>&1; then
137 AC_MSG_ERROR([dont be a Kumba, using -static in LDFLAGS is stupid])
138fi
139
140dnl Some libc's like those on bsd have dlopen() in libc, and not libdl
141AC_CHECK_LIB([dl], [dlopen],
142 [have_libdl="yes"],
143 [have_libdl="no"]
144)
145if test x"$have_libdl" = xyes ; then
146 LIBDL="-ldl"
147 AC_SUBST([LIBDL])
148 DL_LIB="dl"
149else
150 DL_LIB="c"
151 AC_CHECK_LIB([c], [dlopen],
152 [],
153 [AC_MSG_ERROR([Unable to determine library providing dlopen])]
154 )
155fi
156
157dnl uClibc doesn't currently provide dlvsym() so lets
158dnl verify the toolchain supports it
159AC_CHECK_LIB([$DL_LIB], [dlvsym],
160 [AC_DEFINE([HAVE_DLVSYM], [1], [libdl supports dlvsym])],
161 [AC_DEFINE([HAVE_DLVSYM], [0], [libdl does not support dlvsym])]
162)
57 163
58dnl when using libc5, (f)trucate's offset argument type is size_t with 164dnl when using libc5, (f)trucate's offset argument type is size_t with
59dnl libc5, but it's off_t with libc6 (glibc2). 165dnl libc5, but it's off_t with libc6 (glibc2).
60AC_MSG_CHECKING(truncate argument type) 166AC_MSG_CHECKING([truncate argument type])
61if grep -q 'truncate.*size_t' /usr/include/unistd.h ; then 167TRUNC_ARG_TYPE=`echo '#include <unistd.h>' | $CC -E - | grep -q 'truncate.*size_t'`
168if test "$TRUNC_ARG_TYPE"x != x ; then
62 AC_MSG_RESULT(size_t) 169 AC_MSG_RESULT([size_t])
63 AC_DEFINE(TRUNCATE_T, size_t, [truncate arg type]) 170 AC_DEFINE([TRUNCATE_T], [size_t], [truncate arg type])
64else 171else
65 AC_MSG_RESULT(off_t) 172 AC_MSG_RESULT([off_t])
66 AC_DEFINE(TRUNCATE_T, off_t, [truncate arg type]) 173 AC_DEFINE([TRUNCATE_T], [off_t], [truncate arg type])
67fi 174fi
68 175
69AC_MSG_CHECKING(Checking libc version) 176dnl Check if libc provides RTLD_NEXT
177AC_MSG_CHECKING([for RTLD_NEXT])
178AC_TRY_COMPILE([
179 #define _GNU_SOURCE
180 #include <dlfcn.h>
181 ], [
182 #if !defined(RTLD_NEXT)
183 # error no RTLD_NEXT
184 #endif
185 ],
186 [have_rtld_next="yes"],
187 [have_rtld_next="no"]
188)
189AC_MSG_RESULT([$have_rtld_next])
190if test x"$have_rtld_next" = xyes ; then
191 CPPFLAGS="$CPPFLAGS -D_GNU_SOURCE"
192 AC_DEFINE([HAVE_RTLD_NEXT], [1], [Have RTLD_NEXT enabled libc])
193fi
194
195dnl we need to handle symbols differently based upon their version,
196dnl but we have to know which symbols the libc supports first
197AC_MSG_CHECKING([libc path])
70echo "int main(void) { return 0; }" > libctest.c 198echo "int main(void) { return 0; }" > libctest.c
71gcc -Wall -o libctest libctest.c 199$CC $CFLAGS $CPPFLAGS $LDFLAGS -Wl,-verbose -o libctest libctest.c > libctest.log 2>&1
72LIBC_VERSION=`ldd libctest | grep libc\\.so | grep -v 'ld-uClibc' | ${AWK} '{print $1}'` 200cat libctest.log 1>&AS_MESSAGE_LOG_FD
73LIBC_PATH=`ldd libctest | grep libc\\.so | grep -v 'ld-uClibc' | ${AWK} '{print $3}'` 201LIBC_PATH=$(
202 $AWK '/attempt to open/ { if (($4 ~ /\/libc\.so/) && ($5 == "succeeded")) LIBC = $4; }; END {print LIBC}' libctest.log
203)
74rm -f libctest 204rm -f libctest*
75AC_SUBST(LIBC_VERSION) 205if test x"$LIBC_PATH" = x || ! test -r "$LIBC_PATH" ; then
206 AC_MSG_ERROR([Unable to determine LIBC PATH ($LIBC_PATH)])
207fi
208AC_MSG_RESULT([$LIBC_PATH])
76AC_SUBST(LIBC_PATH) 209AC_SUBST([LIBC_PATH])
210
211dnl when intercepting libc calls, we have to know the name of the
212dnl libc to load and search with dl*() calls
213AC_MSG_CHECKING([libc version])
214dnl the sed script at the end here looks funny but it's ok ...
215echo "int main(void) { return 0; }" > libctest.c
216$CC $CFLAGS $CPPFLAGS $LDFLAGS -Wall -o libctest libctest.c
217LIBC_VERSION=$(
218 $READELF -d libctest | \
219 grep NEEDED.*libc\\.so | \
220 $AWK '{print $NF}' | sed -e ['s:\[::' -e 's:\]::']
221)
222rm -f libctest*
223if test "$LIBC_VERSION"x = x ; then
224 AC_MSG_ERROR([Unable to determine LIBC VERSION])
225fi
77AC_MSG_RESULT(${LIBC_VERSION}) 226AC_MSG_RESULT([$LIBC_VERSION])
227AC_DEFINE_UNQUOTED([LIBC_VERSION], ["$LIBC_VERSION"], [Name of libc to hook into])
78 228
79AC_OUTPUT([Makefile]) 229dnl We add to CPPFLAGS rather than doing AC_DEFINE_UNQUOTED
230dnl so we dont have to worry about fully expanding all of
231dnl the variables ($sysconfdir defaults to "$prefix/etc")
232SANDBOX_DEFINES='-DETCDIR="\"$(sysconfdir)\"" -DLIBSANDBOX_PATH="\"$(libdir)\"" -DSANDBOX_BASHRC_PATH="\"$(pkgdatadir)\""'
233AC_SUBST([SANDBOX_DEFINES])
234
235AC_OUTPUT([
236 Makefile
237 scripts/Makefile
238 etc/Makefile
239 data/Makefile
240 libsbutil/Makefile
241 libsandbox/Makefile
242 src/Makefile
243])

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