5 # Prints prog path to stdout or nothing.
6 local name="$1" result="$2"
7 TLOGN "checking for $name"
8 if ! [ "$result" ]; then
9 result=`acLookFor "$name"`
17 local code="$1" tmpdir rc cflags=''
18 if test -z "$code"; then
19 AC_FAIL "No code provided to test compile"
25 AC_FAIL "Invald call to bup_try_c_code" "$@"
28 tmpdir="$(mktemp -d "bup-try-c-compile-XXXXXXX")" || exit $?
29 echo "$code" > "$tmpdir/test.c" || exit $?
30 $AC_CC -Wall -Werror $cflags -c -o "$tmpdir/test" "$tmpdir/test.c"
32 rm -r "$tmpdir" || exit $?
41 rm -rf finished config/bin config.var config.var.tmp config.vars
46 LOG " You need to have a functional C compiler to build $TARGET"
50 for make_candidate in make gmake; do
51 found_make="$(bup_find_prog "$make_candidate" "$MAKE")"
52 if test "$found_make" \
53 && ("$found_make" --version | grep "GNU Make"); then
59 if ! test "$MAKE"; then
60 AC_FAIL "ERROR: unable to find GNU make as make or gmake"
63 MAKE_VERSION=`$MAKE --version | grep "GNU Make" | awk '{print $3}'`
64 if [ -z "$MAKE_VERSION" ]; then
65 AC_FAIL "ERROR: $MAKE --version does not return sensible output?"
67 expr "$MAKE_VERSION" '>=' '3.81' || AC_FAIL "ERROR: $MAKE must be >= version 3.81"
69 AC_SUB bup_make "$MAKE"
72 # Haven't seen a documented way to determine the python version via
73 # python-config right now, so we'll defer version checking until
76 if test "$BUP_PYTHON_CONFIG"; then
77 bup_python_config="$(type -p "$BUP_PYTHON_CONFIG")"
78 if test -z "$bup_python_config"; then
79 AC_FAIL $(printf "ERROR: BUP_PYTHON_CONFIG value %q appears invalid" \
83 for py_maj_ver in 9 8 7 6; do
84 bup_python_config="$(bup_find_prog "python3.$py_maj_ver-config" '')"
85 test -z "$bup_python_config" || break
87 test -z "$bup_python_config" \
88 && bup_python_config="$(bup_find_prog python3-config '')"
89 test -z "$bup_python_config" \
90 && bup_python_config="$(bup_find_prog python2.7-config '')"
91 if test -z "$bup_python_config"; then
92 AC_FAIL "ERROR: unable to find a suitable python-config"
97 bup_python_cflags=$("$bup_python_config" --cflags) || exit $?
98 bup_python_ldflags=$("$bup_python_config" --ldflags) || exit $?
99 bup_python_cflags_embed=$("$bup_python_config" --cflags --embed)
100 if test $? -eq 0; then
101 bup_python_ldflags_embed=$("$bup_python_config" --ldflags --embed) || exit $?
102 else # Earlier versions didn't support --embed
103 bup_python_cflags_embed=$("$bup_python_config" --cflags) || exit $?
104 bup_python_ldflags_embed=$("$bup_python_config" --ldflags) || exit $?
107 bup_python_cflags="$bup_python_cflags -fPIC"
111 # For at least 10.3+ (2003+)
112 bup_python_ldflags="$bup_python_ldflags -bundle -undefined dynamic_lookup"
115 bup_python_ldflags="$bup_python_ldflags -shared"
119 AC_SUB bup_python_config "$bup_python_config"
120 AC_SUB bup_python_cflags "$bup_python_cflags"
121 AC_SUB bup_python_ldflags "$bup_python_ldflags"
122 AC_SUB bup_python_cflags_embed "$bup_python_cflags_embed"
123 AC_SUB bup_python_ldflags_embed "$bup_python_ldflags_embed"
126 bup_git="$(bup_find_prog git '')"
127 if test -z "$bup_git"; then
128 AC_FAIL "ERROR: unable to find git"
132 AC_CHECK_HEADERS sys/stat.h
133 AC_CHECK_HEADERS sys/types.h
135 # For stat and mincore.
136 AC_CHECK_HEADERS unistd.h
139 AC_CHECK_HEADERS sys/mman.h
141 # For FS_IOC_GETFLAGS and FS_IOC_SETFLAGS.
142 AC_CHECK_HEADERS linux/fs.h
143 AC_CHECK_HEADERS sys/ioctl.h
145 # On GNU/kFreeBSD utimensat is defined in GNU libc, but won't work.
146 if [ -z "$OS_GNU_KFREEBSD" ]; then
147 AC_CHECK_FUNCS utimensat
149 AC_CHECK_FUNCS utimes
150 AC_CHECK_FUNCS lutimes
152 builtin_mul_overflow_code="
154 int main(int argc, char **argv)
156 size_t n = 0, size = 0, total;
157 __builtin_mul_overflow(n, size, &total);
162 TLOGN "checking for __builtin_mul_overflow"
163 if bup_try_c_code "$builtin_mul_overflow_code"; then
164 AC_DEFINE BUP_HAVE_BUILTIN_MUL_OVERFLOW 1
171 AC_CHECK_FUNCS mincore
173 mincore_incore_code="
174 #if 0$ac_defined_HAVE_UNISTD_H
177 #if 0$ac_defined_HAVE_SYS_MMAN_H
178 #include <sys/mman.h>
180 int main(int argc, char **argv)
187 mincore_buf_type_code()
191 #include <sys/mman.h>
192 int main(int argc, char **argv)
196 return mincore(x, 0, buf);
200 if test "$ac_defined_HAVE_MINCORE"; then
201 TLOGN "checking for MINCORE_INCORE"
202 if bup_try_c_code "$mincore_incore_code"; then
203 AC_DEFINE BUP_HAVE_MINCORE_INCORE 1
209 TLOGN "checking mincore buf type"
210 if bup_try_c_code "$(mincore_buf_type_code char)"; then
211 AC_DEFINE BUP_MINCORE_BUF_TYPE 'char'
213 elif bup_try_c_code "$(mincore_buf_type_code 'unsigned char')"; then
214 AC_DEFINE BUP_MINCORE_BUF_TYPE 'unsigned char'
215 TLOG ' (unsigned char)'
217 AC_FAIL "ERROR: unexpected mincore definition; please notify bup-list@googlegroups.com"
222 TLOGN "checking for readline"
224 bup_readline_includes_in_subdir=''
225 bup_readline_via_pkg_config=''
226 # We test this specific thing because it should work everywhere and it was
227 # a particulary problem on macos (we'd get the wrong includes if we just
228 # tested that the includes work).
230 static char *on_completion_entry(const char *text, int state) { return NULL; }
231 void bup_test(void) { rl_completion_entry_function = on_completion_entry; }
233 if pkg-config readline; then
234 bup_readline_cflags="$(pkg-config readline --cflags)" || exit $?
235 bup_readline_ldflags="$(pkg-config readline --libs)" || exit $?
236 # It looks like it's not uncommon for pkg-config to provide a -I
237 # that doesn't support the documentation's specified #include
238 # <readline/readline.h>. See what's really going on.
239 if bup_try_c_code "#include <stdio.h> // required by unpatched readline
240 #include <readline/readline.h>
241 $readline_test_code" \
242 "$bup_readline_cflags"
245 bup_readline_includes_in_subdir=1
246 elif bup_try_c_code "#include <stdio.h> // required by unpatched readline
247 #include <readline.h>
248 $readline_test_code" \
249 "$bup_readline_cflags"
253 if test "$bup_have_readline"; then
254 bup_readline_via_pkg_config=1
256 bup_readline_cflags=''
257 bup_readline_ldflags=''
260 if ! test "$bup_have_readline"; then
261 if bup_try_c_code "#include <readline/readline.h> $readline_test_code"; then
262 bup_readline_ldflags=-lreadline
264 bup_readline_includes_in_subdir=1
265 elif bup_try_c_code "#include <readline.h> $readline_test_code"; then
266 bup_readline_ldflags=-lreadline
270 if test "$bup_have_readline"; then
271 AC_DEFINE BUP_HAVE_READLINE 1
272 if test "$bup_readline_includes_in_subdir"; then
273 AC_DEFINE BUP_READLINE_INCLUDES_IN_SUBDIR 1
275 if test "$bup_readline_via_pkg_config"; then
276 TLOG ' (yes, pkg-config)'
283 AC_SUB bup_readline_cflags "$bup_readline_cflags"
284 AC_SUB bup_readline_ldflags "$bup_readline_ldflags"
285 AC_SUB bup_have_readline "$bup_have_readline"
288 AC_CHECK_FIELD stat st_atim sys/types.h sys/stat.h unistd.h
289 AC_CHECK_FIELD stat st_mtim sys/types.h sys/stat.h unistd.h
290 AC_CHECK_FIELD stat st_ctim sys/types.h sys/stat.h unistd.h
292 AC_CHECK_FIELD stat st_atimensec sys/types.h sys/stat.h unistd.h
293 AC_CHECK_FIELD stat st_mtimensec sys/types.h sys/stat.h unistd.h
294 AC_CHECK_FIELD stat st_ctimensec sys/types.h sys/stat.h unistd.h
296 AC_CHECK_FIELD tm tm_gmtoff time.h
301 TLOGN "checking for libacl"
302 if pkg-config libacl; then
303 bup_libacl_cflags="$(pkg-config libacl --cflags)"
304 bup_libacl_ldflags="$(pkg-config libacl --libs)"
305 TLOG ' (yes, pkg-config)'
308 bup_libacl_ldflags='-lacl'
311 AC_CC="$AC_CC${bup_libacl_cflags:+ $bup_libacl_cflags}"
312 LIBS="$bup_libacl_ldflags"
313 AC_CHECK_HEADERS sys/acl.h
314 AC_CHECK_HEADERS acl/libacl.h
315 AC_CHECK_FUNCS acl_get_file
316 AC_CHECK_FUNCS acl_from_text
317 AC_CHECK_FUNCS acl_set_file
318 # Note: These are linux specific, but we need them (for now?)
319 AC_CHECK_FUNCS acl_extended_file
320 AC_CHECK_FUNCS acl_to_any_text
321 TLOGN "checking for complete acl support"
322 if test "$ac_defined_HAVE_ACL_EXTENDED_FILE"; then
324 AC_SUB bup_libacl_cflags "$bup_libacl_cflags"
325 AC_SUB bup_libacl_ldflags "$bup_libacl_ldflags"
329 AC_SUB bup_have_libacl ''
332 AC_SUB bup_have_libacl "$bup_have_libacl"
336 AC_OUTPUT config.vars
341 mkdir -p config.var.tmp
342 echo -n "$MAKE" > config.var.tmp/bup-make
343 echo -n "$bup_python_config" > config.var.tmp/bup-python-config
344 mv config.var.tmp config.var
346 if test -e bin; then rm -r bin; fi
348 (cd bin && ln -s "$MAKE" make)
353 found: python-config (%q)
354 found: git (%q, ($("$bup_git" --version))
356 "$bup_python_config" \
364 if test "$found"; then
370 summarize "$bup_have_readline" 'readline support (e.g. bup ftp)'
371 summarize "$bup_have_libacl" 'POSIX ACL support'