2 # Original version by rsanders
3 # Additional support by Kenneth Albanowski <kjahds@kjahds.com>
5 # ELF support by H.J. Lu <hjl@nynexst.com>
6 # Additional info from Nigel Head <nhead@ESOC.bitnet>
7 # and Kenneth Albanowski <kjahds@kjahds.com>
9 # Consolidated by Andy Dougherty <doughera@lafayette.edu>
11 # Updated Thu Feb 8 11:56:10 EST 1996
13 # Updated Thu May 30 10:50:22 EDT 1996 by <doughera@lafayette.edu>
15 # Updated Fri Jun 21 11:07:54 EDT 1996
16 # NDBM support for ELF re-enabled by <kjahds@kjahds.com>
18 # No version of Linux supports setuid scripts.
21 # No version of Linux needs libutil for perl.
24 # Debian and Red Hat, and perhaps other vendors, provide both runtime and
25 # development packages for some libraries. The runtime packages contain shared
26 # libraries with version information in their names (e.g., libgdbm.so.1.7.3);
27 # the development packages supplement this with versionless shared libraries
30 # If you want to link against such a library, you must install the development
31 # version of the package.
33 # These packages use a -dev naming convention in both Debian and Red Hat:
34 # libgdbmg1 (non-development version of GNU libc 2-linked GDBM library)
35 # libgdbmg1-dev (development version of GNU libc 2-linked GDBM library)
36 # So make sure that for any libraries you wish to link Perl with under
37 # Debian or Red Hat you have the -dev packages installed.
39 # SuSE Linux can be used as cross-compilation host for Cray XT4 Catamount/Qk.
42 case "`cc -V 2>&1`" in
43 *catamount*) . hints/catamount.sh; return ;;
47 # Some operating systems (e.g., Solaris 2.6) will link to a versioned shared
48 # library implicitly. For example, on Solaris, `ld foo.o -lgdbm' will find an
49 # appropriate version of libgdbm, if one is available; Linux, however, doesn't
50 # do the implicit mapping.
51 ignore_versioned_solibs='y'
53 # BSD compatibility library no longer needed
54 # 'kaffe' has a /usr/lib/libnet.so which is not at all relevant for perl.
55 # bind causes issues with several reentrant functions
56 set `echo X "$libswanted "| sed -e 's/ bsd / /' -e 's/ net / /' -e 's/ bind / /'`
60 # Debian 4.0 puts ndbm in the -lgdbm_compat library.
61 libswanted="$libswanted gdbm_compat"
63 # If you have glibc, then report the version for ./myconfig bug reporting.
64 # (Configure doesn't need to know the specific version since it just uses
65 # gcc to load the library for all tests.)
66 # We don't use __GLIBC__ and __GLIBC_MINOR__ because they
67 # are insufficiently precise to distinguish things like
68 # libc-2.0.6 and libc-2.0.7.
69 if test -L /lib/libc.so.6; then
70 libc=`ls -l /lib/libc.so.6 | awk '{print $NF}'`
74 # Configure may fail to find lstat() since it's a static/inline
75 # function in <sys/stat.h>.
79 case "$usemallocwrap" in
80 '') usemallocwrap='define' ;;
83 # The system malloc() is about as fast and as frugal as perl's.
84 # Since the system malloc() has been the default since at least
85 # 5.001, we might as well leave it that way. --AD 10 Jan 2002
86 case "$usemymalloc" in
87 '') usemymalloc='n' ;;
90 # Check if we're about to use Intel's ICC compiler
91 case "`${cc:-cc} -V 2>&1`" in
92 *"Intel(R) C++ Compiler"*|*"Intel(R) C Compiler"*)
93 # record the version, formats:
94 # icc (ICC) 10.1 20080801
95 # icpc (ICC) 10.1 20080801
96 # followed by a copyright on the second line
97 ccversion=`${cc:-cc} --version | sed -n -e 's/^icp\?c \((ICC) \)\?//p'`
98 # This is needed for Configure's prototype checks to work correctly
99 # The -mp flag is needed to pass various floating point related tests
100 # The -no-gcc flag is needed otherwise, icc pretends (poorly) to be gcc
101 ccflags="-we147 -mp -no-gcc $ccflags"
102 # Prevent relocation errors on 64bits arch
108 # If we're using ICC, we usually want the best performance
110 '') optimize='-O3' ;;
114 # Sun's C compiler, which might have a 'tag' name between
115 # 'Sun' and the 'C': Examples:
116 # cc: Sun C 5.9 Linux_i386 Patch 124871-01 2007/07/31
117 # cc: Sun Ceres C 5.10 Linux_i386 2008/07/10
118 test "$optimize" || optimize='-xO2'
120 lddlflags='-G -Bdynamic'
121 # Sun C doesn't support gcc attributes, but, in many cases, doesn't
122 # complain either. Not all cases, though.
123 d_attribute_format='undef'
124 d_attribute_malloc='undef'
125 d_attribute_nonnull='undef'
126 d_attribute_noreturn='undef'
127 d_attribute_pure='undef'
128 d_attribute_unused='undef'
129 d_attribute_warn_unused_result='undef'
134 # use -O2 by default ; -O3 doesn't seem to bring significant benefits with gcc
139 # on ppc, it seems that gcc (at least gcc 3.3.2) isn't happy
140 # with -O2 ; so downgrade to -O1.
144 # This architecture has had various problems with gcc's
145 # in the 3.2, 3.3, and 3.4 releases when optimized to -O2. See
146 # RT #37156 for a discussion of the problem.
147 case "`${cc:-gcc} -v 2>&1`" in
148 *"version 3.2"*|*"version 3.3"*|*"version 3.4"*)
149 ccflags="-fno-delete-null-pointer-checks $ccflags"
157 # Ubuntu 11.04 (and later, presumably) doesn't keep most libraries
158 # (such as -lm) in /lib or /usr/lib. So we have to ask gcc to tell us
159 # where to look. We don't want gcc's own libraries, however, so we
161 # This could be conditional on Unbuntu, but other distributions may
162 # follow suit, and this scheme seems to work even on rather old gcc's.
163 # This unconditionally uses gcc because even if the user is using another
164 # compiler, we still need to find the math library and friends, and I don't
165 # know how other compilers will cope with that situation.
166 # Morever, if the user has their own gcc earlier in $PATH than the system gcc,
167 # we don't want its libraries. So we try to prefer the system gcc
168 # Still, as an escape hatch, allow Configure command line overrides to
169 # plibpth to bypass this check.
170 if [ -x /usr/bin/gcc ] ; then
177 '') plibpth=`LANG=C LC_ALL=C $gcc -print-search-dirs | grep libraries |
178 cut -f2- -d= | tr ':' $trnl | grep -v 'gcc' | sed -e 's:/$::'`
179 set X $plibpth # Collapse all entries on one line
185 # Are we using ELF? Thanks to Kenneth Albanowski <kjahds@kjahds.com>
188 /* Test for whether ELF binaries are produced */
194 int i=open("a.out",O_RDONLY);
197 if(read(i,&buffer[0],4)<4)
199 if(buffer[0] != 127 || buffer[1] != 'E' ||
200 buffer[2] != 'L' || buffer[3] != 'F')
202 exit(0); /* succeed (yes, it's ELF) */
205 if ${cc:-gcc} try.c >/dev/null 2>&1 && $run ./a.out; then
208 You appear to have ELF support. I'll try to use it for dynamic loading.
209 If dynamic loading doesn't work, read hints/linux.sh for further information.
215 You don't have an ELF gcc. I will use dld if possible. If you are
216 using a version of DLD earlier than 3.2.6, or don't have it at all, you
217 should probably upgrade. If you are forced to use 3.2.4, you should
218 uncomment a couple of lines in hints/linux.sh and restart Configure so
219 that shared libraries will be disallowed.
222 lddlflags="-r $lddlflags"
223 # These empty values are so that Configure doesn't put in the
227 ccflags="-DOVR_DBL_DIG=14 $ccflags"
231 ## If you are using DLD 3.2.4 which does not support shared libs,
232 ## uncomment the next two lines:
236 # In addition, on some systems there is a problem with perl and NDBM
237 # which causes AnyDBM and NDBM_File to lock up. This is evidenced
238 # in the tests as AnyDBM just freezing. Apparently, this only
239 # happens on a.out systems, so we disable NDBM for all a.out linux
240 # systems. If someone can suggest a more robust test
241 # that would be appreciated.
244 # Date: Wed, 7 Feb 1996 03:21:04 +0900
245 # From: Jeffrey Friedl <jfriedl@nff.ncl.omron.co.jp>
247 # I tried compiling with DBM support and sure enough things locked up
248 # just as advertised. Checking into it, I found that the lockup was
249 # during the call to dbm_open. Not *in* dbm_open -- but between the call
250 # to and the jump into.
252 # To make a long story short, making sure that the *.a and *.sa pairs of
253 # /usr/lib/lib{m,db,gdbm}.{a,sa}
254 # were perfectly in sync took care of it.
256 # This will generate a harmless Whoa There! message
257 case "$d_dbm_open" in
260 Disabling ndbm. This will generate a Whoa There message in Configure.
261 Read hints/linux.sh for further information.
263 # You can override this with Configure -Dd_dbm_open
271 if /bin/sh -c exit; then
273 echo 'You appear to have a working bash. Good.'
277 *********************** Warning! *********************
278 It would appear you have a defective bash shell installed. This is likely to
279 give you a failure of op/exec test #5 during the test phase of the build,
280 Upgrading to a recent version (1.14.4 or later) should fix the problem.
281 ******************************************************
287 # The following csh consistently coredumped in the test directory
288 # "/home/mikedlr/perl5.003_94/t", though not most other directories.
290 #Name : csh Distribution: Red Hat Linux (Rembrandt)
291 #Version : 5.2.6 Vendor: Red Hat Software
292 #Release : 3 Build Date: Fri May 24 19:42:14 1996
293 #Install date: Thu Jul 11 16:20:14 1996 Build Host: itchy.redhat.com
294 #Group : Shells Source RPM: csh-5.2.6-3.src.rpm
296 #Description : BSD c-shell
298 # For this reason I suggest using the much bug-fixed tcsh for globbing
301 # November 2001: That warning's pretty old now and probably not so
302 # relevant, especially since perl now uses File::Glob for globbing.
303 # We'll still look for tcsh, but tone down the warnings.
304 # Andy Dougherty, Nov. 6, 2001
305 if $csh -c 'echo $version' >/dev/null 2>&1; then
306 echo 'Your csh is really tcsh. Good.'
308 if xxx=`./UU/loc tcsh blurfl $pth`; $test -f "$xxx"; then
309 echo "Found tcsh. I'll use it for globbing."
310 # We can't change Configure's setting of $csh, due to the way
311 # Configure handles $d_portable and commands found in $loclist.
312 # We can set the value for CSH in config.h by setting full_csh.
314 elif [ -f "$csh" ]; then
315 echo "Couldn't find tcsh. Csh-based globbing might be broken."
319 # Shimpei Yamashita <shimpei@socrates.patnet.caltech.edu>
320 # Message-Id: <33EF1634.B36B6500@pobox.com>
322 # The DR2 of MkLinux (osname=linux,archname=ppc-linux) may need
323 # special flags passed in order for dynamic loading to work.
324 # instead of the recommended:
326 # ccdlflags='-rdynamic'
331 # So if your DR2 (DR3 came out summer 1998, consider upgrading)
332 # has problems with dynamic loading, uncomment the
333 # following three lines, make distclean, and re-Configure:
334 #case "`uname -r | sed 's/^[0-9.-]*//'``arch`" in
335 #'osfmach3ppc') ccdlflags='-Wl,-E' ;;
340 case "$cccdlflags" in
341 *-fpic*) cccdlflags="`echo $cccdlflags|sed 's/-fpic/-fPIC/'`" ;;
343 *) cccdlflags="$cccdlflags -fPIC" ;;
348 # SuSE8.2 has /usr/lib/libndbm* which are ld scripts rather than
349 # true libraries. The scripts cause binding against static
350 # version of -lgdbm which is a bad idea. So if we have 'nm'
351 # make sure it can read the file
353 if [ -r /usr/lib/libndbm.so -a -x /usr/bin/nm ] ; then
354 if /usr/bin/nm /usr/lib/libndbm.so >/dev/null 2>&1 ; then
355 echo 'Your shared -lndbm seems to be a real library.'
357 echo 'Your shared -lndbm is not a real library.'
358 set `echo X "$libswanted "| sed -e 's/ ndbm / /'`
365 # This script UU/usethreads.cbu will get 'called-back' by Configure
366 # after it has prompted the user for whether to use threads.
367 cat > UU/usethreads.cbu <<'EOCBU'
368 case "$usethreads" in
370 ccflags="-D_REENTRANT -D_GNU_SOURCE $ccflags"
371 if echo $libswanted | grep -v pthread >/dev/null
373 set `echo X "$libswanted "| sed -e 's/ c / pthread c /'`
378 # Somehow at least in Debian 2.2 these manage to escape
379 # the #define forest of <features.h> and <time.h> so that
380 # the hasproto macro of Configure doesn't see these protos,
381 # even with the -D_GNU_SOURCE.
383 d_asctime_r_proto="$define"
384 d_crypt_r_proto="$define"
385 d_ctime_r_proto="$define"
386 d_gmtime_r_proto="$define"
387 d_localtime_r_proto="$define"
388 d_random_r_proto="$define"
394 cat > UU/uselargefiles.cbu <<'EOCBU'
395 # This script UU/uselargefiles.cbu will get 'called-back' by Configure
396 # after it has prompted the user for whether to use large files.
397 case "$uselargefiles" in
398 ''|$define|true|[yY]*)
399 # Keep this in the left margin.
400 ccflags_uselargefiles="-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64"
402 ccflags="$ccflags $ccflags_uselargefiles"
407 # Purify fails to link Perl if a "-lc" is passed into its linker
408 # due to duplicate symbols.
411 set `echo X "$libswanted "| sed -e 's/ c / /'`
417 # If we are using g++ we must use nm and force ourselves to use
418 # the /usr/lib/libc.a (resetting the libc below to an empty string
419 # makes Configure to look for the right one) because the symbol
420 # scanning tricks of Configure will crash and burn horribly.
427 # If using g++, the Configure scan for dlopen() and (especially)
428 # dlerror() might fail, easier just to forcibly hint them in.
436 # Under some circumstances libdb can get built in such a way as to
437 # need pthread explicitly linked.
439 libdb_needs_pthread="N"
441 if echo " $libswanted " | grep -v " pthread " >/dev/null
443 if echo " $libswanted " | grep " db " >/dev/null
445 for DBDIR in $glibpth
447 DBLIB="$DBDIR/libdb.so"
450 if nm -u $DBLIB | grep pthread >/dev/null
452 if ldd $DBLIB | grep pthread >/dev/null
454 libdb_needs_pthread="N"
456 libdb_needs_pthread="Y"
464 case "$libdb_needs_pthread" in
466 libswanted="$libswanted pthread"