/[path-sandbox]/trunk/configure.ac
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Revision 232 Revision 404
1AC_PREREQ([2.59]) 1AC_PREREQ([2.61])
2AC_INIT([sandbox], [1.2.17], [sandbox@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
6dnl 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], [false]) 12AC_CHECK_PROGS([READELF], [readelf eu-readelf], [false])
13 13
14AC_ENABLE_SHARED 14AC_ENABLE_SHARED
15AC_DISABLE_STATIC 15AC_DISABLE_STATIC
16dnl Next four lines is a hack to prevent libtool checking for CXX/F77 16dnl Next four lines is a hack to prevent libtool checking for CXX/F77
17m4_undefine([AC_PROG_CXX]) 17m4_undefine([AC_PROG_CXX])
26dnl Checks for header files. 26dnl Checks for header files.
27AC_FUNC_ALLOCA 27AC_FUNC_ALLOCA
28AC_HEADER_DIRENT 28AC_HEADER_DIRENT
29AC_HEADER_STDC 29AC_HEADER_STDC
30AC_HEADER_SYS_WAIT 30AC_HEADER_SYS_WAIT
31AC_CHECK_HEADERS([ \ 31AC_CHECK_HEADERS_ONCE([ \
32 fcntl.h limits.h memory.h stddef.h \ 32 dirent.h \
33 stdlib.h string.h strings.h sys/file.h \ 33 dlfcn.h \
34 sys/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 \
35]) 58])
36 59
37dnl Checks for typedefs, structures, and compiler characteristics. 60dnl Checks for typedefs, structures, and compiler characteristics.
38AC_C_CONST 61AC_C_CONST
39AC_TYPE_UID_T 62AC_TYPE_UID_T
46AC_FUNC_FORK 69AC_FUNC_FORK
47AC_FUNC_LSTAT 70AC_FUNC_LSTAT
48AC_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK 71AC_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK
49AC_TYPE_SIGNAL 72AC_TYPE_SIGNAL
50AC_FUNC_STAT 73AC_FUNC_STAT
51AC_CHECK_FUNCS([ \ 74AC_CHECK_FUNCS_ONCE([ \
52 bzero ftruncate getcwd lchown memmove \ 75 backtrace \
53 memcpy memset mkdir pathconf realpath \ 76 ftruncate \
54 rmdir setenv strcasecmp strchr strdup \ 77 getcwd \
55 strerror 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 \
56]) 96])
97dnl For librcutil
98AC_CHECK_FUNCS([remove])
99
100dnl Check if gcc provides va_copy or __va_copy (for librcutil)
101AC_MSG_CHECKING([for va_copy])
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 | $EGREP -e -static >/dev/null 2>&1; then
137 AC_MSG_ERROR([dont be a Kumba, using -static in LDFLAGS is stupid])
138fi
57 139
58dnl Some libc's like those on bsd have dlopen() in libc, and not libdl 140dnl Some libc's like those on bsd have dlopen() in libc, and not libdl
59AC_CHECK_LIB([dl], [dlopen], 141AC_CHECK_LIB([dl], [dlopen],
60 [have_libdl="yes"], 142 [have_libdl="yes"],
61 [have_libdl="no"] 143 [have_libdl="no"]
62) 144)
63if test x"$have_libdl" = xyes ; then 145if test x"$have_libdl" = xyes ; then
64 LIBDL="-ldl" 146 LIBDL="-ldl"
65 AC_SUBST([LIBDL]) 147 AC_SUBST([LIBDL])
66 DL_LIB="dl" 148 DL_LIB="dl"
67else 149else
68 DL_LIB="c" 150 DL_LIB="c"
69 AC_CHECK_LIB([c], [dlopen], 151 AC_CHECK_LIB([c], [dlopen],
70 [], 152 [],
71 [AC_MSG_ERROR([Unable to determine library providing dlopen])] 153 [AC_MSG_ERROR([Unable to determine library providing dlopen])]
72 ) 154 )
73fi 155fi
74 156
75dnl uClibc doesn't currently provide dlvsym() so lets 157dnl uClibc doesn't currently provide dlvsym() so lets
76dnl verify the toolchain supports it 158dnl verify the toolchain supports it
77AC_CHECK_LIB([$DL_LIB], [dlvsym], 159AC_CHECK_LIB([$DL_LIB], [dlvsym],
78 [AC_DEFINE([HAVE_DLVSYM], [1], [libdl supports dlvsym])], 160 [AC_DEFINE([HAVE_DLVSYM], [1], [libdl supports dlvsym])],
79 [AC_DEFINE([HAVE_DLVSYM], [0], [libdl does not support dlvsym])] 161 [AC_DEFINE([HAVE_DLVSYM], [0], [libdl does not support dlvsym])]
80) 162)
81 163
82dnl 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
83dnl libc5, but it's off_t with libc6 (glibc2). 165dnl libc5, but it's off_t with libc6 (glibc2).
84AC_MSG_CHECKING([truncate argument type]) 166AC_MSG_CHECKING([truncate argument type])
85TRUNC_ARG_TYPE=`echo '#include <unistd.h>' | $CC -E - | grep -q 'truncate.*size_t'` 167TRUNC_ARG_TYPE=`echo '#include <unistd.h>' | $CC -E - | grep -q 'truncate.*size_t'`
86if test "$TRUNC_ARG_TYPE"x != x ; then 168if test "$TRUNC_ARG_TYPE"x != x ; then
87 AC_MSG_RESULT([size_t]) 169 AC_MSG_RESULT([size_t])
88 AC_DEFINE([TRUNCATE_T], [size_t], [truncate arg type]) 170 AC_DEFINE([TRUNCATE_T], [size_t], [truncate arg type])
89else 171else
90 AC_MSG_RESULT([off_t]) 172 AC_MSG_RESULT([off_t])
91 AC_DEFINE([TRUNCATE_T], [off_t], [truncate arg type]) 173 AC_DEFINE([TRUNCATE_T], [off_t], [truncate arg type])
92fi 174fi
93 175
94dnl Check if libc provides RTLD_NEXT 176dnl Check if libc provides RTLD_NEXT
95AC_MSG_CHECKING([for RTLD_NEXT]) 177AC_MSG_CHECKING([for RTLD_NEXT])
96AC_TRY_COMPILE([ 178AC_TRY_COMPILE([
97#define _GNU_SOURCE 179 #define _GNU_SOURCE
98#include <dlfcn.h> 180 #include <dlfcn.h>
99], [ 181 ], [
100#if !defined(RTLD_NEXT) 182 #if !defined(RTLD_NEXT)
101# error no RTLD_NEXT 183 # error no RTLD_NEXT
102#endif 184 #endif
103 185 ],
104int
105main (void)
106{
107 return 0;
108}
109],
110 [have_rtld_next="yes"], 186 [have_rtld_next="yes"],
111 [have_rtld_next="no"] 187 [have_rtld_next="no"]
112) 188)
113AC_MSG_RESULT([$have_rtld_next]) 189AC_MSG_RESULT([$have_rtld_next])
114AM_CONDITIONAL([HAVE_RTLD_NEXT], [test x"$have_rtld_next" = xyes]) 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
115 194
116dnl we need to handle symbols differently based upon their version, 195dnl we need to handle symbols differently based upon their version,
117dnl but we have to know which symbols the libc supports first 196dnl but we have to know which symbols the libc supports first
118AC_MSG_CHECKING([libc path]) 197AC_MSG_CHECKING([libc path])
119echo "int main(void) { return 0; }" > libctest.c 198echo "int main(void) { return 0; }" > libctest.c
120$CC -Wall -o libctest libctest.c 199$CC $CFLAGS $CPPFLAGS $LDFLAGS -Wl,-verbose -o libctest libctest.c > libctest.log 2>&1
121LIBC_PATH=`$CC $CFLAGS -Wl,-verbose -o libctest libctest.c 2>&1 | \ 200cat libctest.log 1>&AS_MESSAGE_LOG_FD
201LIBC_PATH=$(
122 $AWK '/attempt to open/ { if (($4 ~ /\/libc\.so/) && ($5 == "succeeded")) LIBC = $4; }; END {print LIBC}'` 202 $AWK '/attempt to open/ { if (($4 ~ /\/libc\.so/) && ($5 == "succeeded")) LIBC = $4; }; END {print LIBC}' libctest.log
203)
123rm -f libctest.c 204rm -f libctest*
124if test "$LIBC_PATH"x = x || ! test -r "$LIBC_PATH"; then 205if test x"$LIBC_PATH" = x || ! test -r "$LIBC_PATH" ; then
125 AC_MSG_ERROR([Unable to determine LIBC PATH]) 206 AC_MSG_ERROR([Unable to determine LIBC PATH ($LIBC_PATH)])
126fi 207fi
127AC_MSG_RESULT([$LIBC_PATH]) 208AC_MSG_RESULT([$LIBC_PATH])
128AC_SUBST([LIBC_PATH]) 209AC_SUBST([LIBC_PATH])
129 210
130dnl when intercepting libc calls, we have to know the name of the 211dnl when intercepting libc calls, we have to know the name of the
131dnl libc to load and search with dl*() calls 212dnl libc to load and search with dl*() calls
132AC_MSG_CHECKING([libc version]) 213AC_MSG_CHECKING([libc version])
133dnl the sed script at the end here looks funny but it's ok ... 214dnl the sed script at the end here looks funny but it's ok ...
134dnl they're m4 escape sequences for left and right brackets 215echo "int main(void) { return 0; }" > libctest.c
135LIBC_VERSION=`readelf -d libctest | grep NEEDED.*libc\\.so | $AWK '{print $NF}' | sed -e 's:\@<:@::' -e 's:\@:>@::'` 216$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*
136if test "$LIBC_VERSION"x = x ; then 223if test "$LIBC_VERSION"x = x ; then
137 AC_MSG_ERROR([Unable to determine LIBC VERSION]) 224 AC_MSG_ERROR([Unable to determine LIBC VERSION])
138fi 225fi
139rm -f libctest
140AC_MSG_RESULT([$LIBC_VERSION]) 226AC_MSG_RESULT([$LIBC_VERSION])
141AC_DEFINE_UNQUOTED([LIBC_VERSION], ["$LIBC_VERSION"], [name of libc to hook into]) 227AC_DEFINE_UNQUOTED([LIBC_VERSION], ["$LIBC_VERSION"], [Name of libc to hook into])
142 228
143dnl check if we have 32bit or 64bit output 229dnl We add to CPPFLAGS rather than doing AC_DEFINE_UNQUOTED
144AC_ARG_ENABLE([multilib], 230dnl so we dont have to worry about fully expanding all of
145 AS_HELP_STRING([--enable-multilib], 231dnl the variables ($sysconfdir defaults to "$prefix/etc")
146 [enable building for multilib setups (default=disabled)]), 232SANDBOX_DEFINES='-DETCDIR="\"$(sysconfdir)\"" -DLIBSANDBOX_PATH="\"$(libdir)\"" -DSANDBOX_BASHRC_PATH="\"$(pkgdatadir)\""'
147 [enable_multilib="$enableval"], 233AC_SUBST([SANDBOX_DEFINES])
148 [enable_multilib="no"]
149)
150 234
151if test x"$enable_multilib" != xno ; then 235CPPFLAGS="$CPPFLAGS -D_REENTRANT"
152 AC_DEFINE_UNQUOTED([SB_HAVE_MULTILIB], [1], [have multilib enabled system]) 236if test "$GCC" = yes; then
237 CFLAGS="$CFLAGS -Wall"
153fi 238fi
154 239
155AC_OUTPUT([ 240AC_OUTPUT([
156 Makefile 241 Makefile
157 scripts/Makefile 242 scripts/Makefile
243 etc/Makefile
158 data/Makefile 244 data/Makefile
245 libsbutil/Makefile
246 libsandbox/Makefile
159 src/Makefile 247 src/Makefile
160]) 248])

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