59
# Get the directory component of the given path, and save it in the
60
# global variables '$dir'. Note that this directory component will
61
# be either empty or ending with a '/' character. This is deliberate.
65
*/*) dir=`echo "$1" | sed -e 's|/[^/]*$|/|'`;;
70
# Get the suffix-stripped basename of the given path, and save it the
71
# global variable '$base'.
74
base=`echo "$1" | sed -e 's|^.*/||' -e 's/\.[^.]*$//'`
77
# If no dependency file was actually created by the compiler invocation,
78
# we still have to create a dummy depfile, to avoid errors with the
79
# Makefile "include basename.Plo" scheme.
82
echo "#dummy" > "$depfile"
85
# Factor out some common post-processing of the generated depfile.
86
# Requires the auxiliary global variable '$tmpdepfile' to be set.
87
aix_post_process_depfile ()
89
# If the compiler actually managed to produce a dependency file,
91
if test -f "$tmpdepfile"; then
92
# Each line is of the form 'foo.o: dependency.h'.
93
# Do two passes, one to just change these to
94
# $object: dependency.h
95
# and one to simply output
97
# which is needed to avoid the deleted-header problem.
98
{ sed -e "s,^.*\.[$lower]*:,$object:," < "$tmpdepfile"
99
sed -e "s,^.*\.[$lower]*:[$tab ]*,," -e 's,$,:,' < "$tmpdepfile"
60
107
# A tabulation character.
62
109
# A newline character.
112
# Character ranges might be problematic outside the C locale.
113
# These definitions help.
114
upper=ABCDEFGHIJKLMNOPQRSTUVWXYZ
115
lower=abcdefghijklmnopqrstuvwxyz
117
alpha=${upper}${lower}
66
119
if test -z "$depmode" || test -z "$source" || test -z "$object"; then
67
120
echo "depcomp: Variables source, object and depmode must be set" 1>&2
88
144
if test "$depmode" = dashXmstdout; then
89
# This is just like dashmstdout with a different argument.
145
# This is just like dashmstdout with a different argument.
94
150
cygpath_u="cygpath -u -f -"
95
151
if test "$depmode" = msvcmsys; then
96
# This is just like msvisualcpp but w/o cygpath translation.
97
# Just convert the backslash-escaped backslashes to single forward
98
# slashes to satisfy depend.m4
99
cygpath_u='sed s,\\\\,/,g'
152
# This is just like msvisualcpp but w/o cygpath translation.
153
# Just convert the backslash-escaped backslashes to single forward
154
# slashes to satisfy depend.m4
155
cygpath_u='sed s,\\\\,/,g'
103
159
if test "$depmode" = msvc7msys; then
104
# This is just like msvc7 but w/o cygpath translation.
105
# Just convert the backslash-escaped backslashes to single forward
106
# slashes to satisfy depend.m4
107
cygpath_u='sed s,\\\\,/,g'
160
# This is just like msvc7 but w/o cygpath translation.
161
# Just convert the backslash-escaped backslashes to single forward
162
# slashes to satisfy depend.m4
163
cygpath_u='sed s,\\\\,/,g'
111
167
if test "$depmode" = xlc; then
112
# IBM C/C++ Compilers xlc/xlC can output gcc-like dependency informations.
113
gccflag=-qmakedep=gcc,-MF
168
# IBM C/C++ Compilers xlc/xlC can output gcc-like dependency information.
169
gccflag=-qmakedep=gcc,-MF
117
173
case "$depmode" in
201
## Note that this doesn't just cater to obsosete pre-3.x GCC compilers.
202
## but also to in-use compilers like IMB xlc/xlC and the HP C compiler.
203
## (see the conditional assignment to $gccflag above).
146
204
## There are various ways to get dependency output from gcc. Here's
147
205
## why we pick this rather obscure method:
148
206
## - Don't want to use -MD because we'd like the dependencies to end
149
207
## up in a subdir. Having to rename by hand is ugly.
150
208
## (We might end up doing this anyway to support other compilers.)
151
209
## - The DEPENDENCIES_OUTPUT environment variable makes gcc act like
152
## -MM, not -M (despite what the docs say).
210
## -MM, not -M (despite what the docs say). Also, it might not be
211
## supported by the other compilers which use the 'gcc' depmode.
153
212
## - Using -M directly means running the compiler twice (even worse
154
213
## than renaming).
155
214
if test -z "$gccflag"; then
274
323
test -f "$tmpdepfile" && break
276
if test -f "$tmpdepfile"; then
277
# Each line is of the form 'foo.o: dependent.h'.
278
# Do two passes, one to just change these to
279
# '$object: dependent.h' and one to simply 'dependent.h:'.
280
sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile"
281
sed -e 's,^.*\.[a-z]*:['"$tab"' ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
283
# The sourcefile does not contain any dependencies, so just
284
# store a dummy comment line, to avoid errors with the Makefile
285
# "include basename.Plo" scheme.
286
echo "#dummy" > "$depfile"
325
aix_post_process_depfile
329
# tcc (Tiny C Compiler) understand '-MD -MF file' since version 0.9.26
330
# FIXME: That version still under development at the moment of writing.
331
# Make that this statement remains true also for stable, released
333
# It will wrap lines (doesn't matter whether long or short) with a
334
# trailing '\', as in:
340
# It will put a trailing '\' even on the last line, and will use leading
341
# spaces rather than leading tabs (at least since its commit 0394caf7
342
# "Emit spaces for -MD").
343
"$@" -MD -MF "$tmpdepfile"
345
if test $stat -ne 0; then
350
# Each non-empty line is of the form 'foo.o : \' or ' dep.h \'.
351
# We have to change lines of the first kind to '$object: \'.
352
sed -e "s|.*:|$object :|" < "$tmpdepfile" > "$depfile"
353
# And for each line of the second kind, we have to emit a 'dep.h:'
354
# dummy dependency, to avoid the deleted-header problem.
355
sed -n -e 's|^ *\(.*\) *\\$|\1:|p' < "$tmpdepfile" >> "$depfile"
288
356
rm -f "$tmpdepfile"
292
# Intel's C compiler anf tcc (Tiny C Compiler) understand '-MD -MF file'.
294
# $CC -MD -MF foo.d -c -o sub/foo.o sub/foo.c
295
# ICC 7.0 will fill foo.d with something like
298
# which is wrong. We want
299
# sub/foo.o: sub/foo.c
300
# sub/foo.o: sub/foo.h
303
# ICC 7.1 will output
359
## The order of this option in the case statement is important, since the
360
## shell code in configure will try each of these formats in the order
361
## listed in this file. A plain '-MD' option would be understood by many
362
## compilers, so we must ensure this comes after the gcc and icc options.
364
# Portland's C compiler understands '-MD'.
365
# Will always output deps to 'file.d' where file is the root name of the
366
# source file under compilation, even if file resides in a subdirectory.
367
# The object file name does not affect the name of the '.d' file.
368
# pgcc 10.2 will output
304
369
# foo.o: sub/foo.c sub/foo.h
305
# and will wrap long lines using '\':
370
# and will wrap long lines using '\' :
306
371
# foo.o: sub/foo.c ... \
307
372
# sub/foo.h ... \
309
# tcc 0.9.26 (FIXME still under development at the moment of writing)
310
# will emit a similar output, but also prepend the continuation lines
311
# with horizontal tabulation characters.
312
"$@" -MD -MF "$tmpdepfile"
314
if test $stat -eq 0; then :
374
set_dir_from "$object"
375
# Use the source, not the object, to determine the base name, since
376
# that's sadly what pgcc will do too.
377
set_base_from "$source"
380
# For projects that build the same source file twice into different object
381
# files, the pgcc approach of using the *source* file root name can cause
382
# problems in parallel builds. Use a locking strategy to avoid stomping on
383
# the same $tmpdepfile.
386
echo '$0: caught signal, cleaning up...' >&2
392
while test $i -gt 0; do
393
# mkdir is a portable test-and-set.
394
if mkdir "$lockdir" 2>/dev/null; then
395
# This process acquired the lock.
402
# If the lock is being held by a different process, wait
403
# until the winning process is done or we timeout.
404
while test -d "$lockdir" && test $i -gt 0; do
412
if test $i -le 0; then
413
echo "$0: failed to acquire lock after $numtries attempts" >&2
414
echo "$0: check lockdir '$lockdir'" >&2
418
if test $stat -ne 0; then
316
419
rm -f "$tmpdepfile"
320
# Each line is of the form 'foo.o: dependent.h',
321
# or 'foo.o: dep1.h dep2.h \', or ' dep3.h dep4.h \'.
423
# Each line is of the form `foo.o: dependent.h',
424
# or `foo.o: dep1.h dep2.h \', or ` dep3.h dep4.h \'.
322
425
# Do two passes, one to just change these to
323
# '$object: dependent.h' and one to simply 'dependent.h:'.
324
sed -e "s/^[ $tab][ $tab]*/ /" -e "s,^[^:]*:,$object :," \
325
< "$tmpdepfile" > "$depfile"
327
s/[ '"$tab"'][ '"$tab"']*/ /g
334
' < "$tmpdepfile" >> "$depfile"
426
# `$object: dependent.h' and one to simply `dependent.h:'.
427
sed "s,^[^:]*:,$object :," < "$tmpdepfile" > "$depfile"
428
# Some versions of the HPUX 10.20 sed can't process this invocation
429
# correctly. Breaking it into two sed invocations is a workaround.
430
sed 's,^[^:]*: \(.*\)$,\1,;s/^\\$//;/^$/d;/:$/d' < "$tmpdepfile" \
431
| sed -e 's/$/ :/' >> "$depfile"
335
432
rm -f "$tmpdepfile"
366
461
test -f "$tmpdepfile" && break
368
463
if test -f "$tmpdepfile"; then
369
sed -e "s,^.*\.[a-z]*:,$object:," "$tmpdepfile" > "$depfile"
464
sed -e "s,^.*\.[$lower]*:,$object:," "$tmpdepfile" > "$depfile"
370
465
# Add 'dependent.h:' lines.
376
}' "$tmpdepfile" >> "$depfile"
471
}' "$tmpdepfile" >> "$depfile"
378
echo "#dummy" > "$depfile"
380
475
rm -f "$tmpdepfile" "$tmpdepfile2"
384
# The Tru64 compiler uses -MD to generate dependencies as a side
385
# effect. 'cc -MD -o foo.o ...' puts the dependencies into 'foo.o.d'.
386
# At least on Alpha/Redhat 6.1, Compaq CCC V6.2-504 seems to put
387
# dependencies in 'foo.d' instead, so we check for that too.
388
# Subdirectories are respected.
389
dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
390
test "x$dir" = "x$object" && dir=
391
base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
393
if test "$libtool" = yes; then
394
# With Tru64 cc, shared objects can also be used to make a
395
# static library. This mechanism is used in libtool 1.4 series to
396
# handle both shared and static libraries in a single compilation.
397
# With libtool 1.4, dependencies were output in $dir.libs/$base.lo.d.
399
# With libtool 1.5 this exception was removed, and libtool now
400
# generates 2 separate objects for the 2 libraries. These two
401
# compilations output dependencies in $dir.libs/$base.o.d and
402
# in $dir$base.o.d. We have to check for both files, because
403
# one of the two compilations can be disabled. We should prefer
404
# $dir$base.o.d over $dir.libs/$base.o.d because the latter is
405
# automatically cleaned when .libs/ is deleted, while ignoring
406
# the former would cause a distcleancheck panic.
407
tmpdepfile1=$dir.libs/$base.lo.d # libtool 1.4
408
tmpdepfile2=$dir$base.o.d # libtool 1.5
409
tmpdepfile3=$dir.libs/$base.o.d # libtool 1.5
410
tmpdepfile4=$dir.libs/$base.d # Compaq CCC V6.2-504
413
tmpdepfile1=$dir$base.o.d
414
tmpdepfile2=$dir$base.d
415
tmpdepfile3=$dir$base.d
416
tmpdepfile4=$dir$base.d
421
if test $stat -eq 0; then :
423
rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" "$tmpdepfile4"
427
for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" "$tmpdepfile4"
429
test -f "$tmpdepfile" && break
431
if test -f "$tmpdepfile"; then
432
sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile"
433
sed -e 's,^.*\.[a-z]*:['"$tab"' ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
435
echo "#dummy" > "$depfile"
479
# The Tru64 compiler uses -MD to generate dependencies as a side
480
# effect. 'cc -MD -o foo.o ...' puts the dependencies into 'foo.o.d'.
481
# At least on Alpha/Redhat 6.1, Compaq CCC V6.2-504 seems to put
482
# dependencies in 'foo.d' instead, so we check for that too.
483
# Subdirectories are respected.
484
set_dir_from "$object"
485
set_base_from "$object"
487
if test "$libtool" = yes; then
488
# Libtool generates 2 separate objects for the 2 libraries. These
489
# two compilations output dependencies in $dir.libs/$base.o.d and
490
# in $dir$base.o.d. We have to check for both files, because
491
# one of the two compilations can be disabled. We should prefer
492
# $dir$base.o.d over $dir.libs/$base.o.d because the latter is
493
# automatically cleaned when .libs/ is deleted, while ignoring
494
# the former would cause a distcleancheck panic.
495
tmpdepfile1=$dir$base.o.d # libtool 1.5
496
tmpdepfile2=$dir.libs/$base.o.d # Likewise.
497
tmpdepfile3=$dir.libs/$base.d # Compaq CCC V6.2-504
500
tmpdepfile1=$dir$base.d
501
tmpdepfile2=$dir$base.d
502
tmpdepfile3=$dir$base.d
507
if test $stat -ne 0; then
508
rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
512
for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
514
test -f "$tmpdepfile" && break
516
# Same post-processing that is required for AIX mode.
517
aix_post_process_depfile
441
521
if test "$libtool" = yes; then
added
removed
depcomp
