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1 | # hints/linux.sh |
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2 | # Original version by rsanders |
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3 | # Additional support by Kenneth Albanowski <kjahds@kjahds.com> |
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4 | # |
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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> |
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8 | # |
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9 | # Consolidated by Andy Dougherty <doughera@lafayette.edu> |
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10 | # |
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11 | # Updated Thu Feb 8 11:56:10 EST 1996 |
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12 | |
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13 | # Updated Thu May 30 10:50:22 EDT 1996 by <doughera@lafayette.edu> |
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14 | |
15 | # Updated Fri Jun 21 11:07:54 EDT 1996 |
16 | # NDBM support for ELF renabled by <kjahds@kjahds.com> |
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17 | |
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18 | # No version of Linux supports setuid scripts. |
19 | d_suidsafe='undef' |
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20 | |
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21 | # Debian and Red Hat, and perhaps other vendors, provide both runtime and |
22 | # development packages for some libraries. The runtime packages contain shared |
23 | # libraries with version information in their names (e.g., libgdbm.so.1.7.3); |
24 | # the development packages supplement this with versionless shared libraries |
25 | # (e.g., libgdbm.so). |
26 | # |
27 | # If you want to link against such a library, you must install the development |
28 | # version of the package. |
29 | # |
30 | # These packages use a -dev naming convention in both Debian and Red Hat: |
31 | # libgdbmg1 (non-development version of GNU libc 2-linked GDBM library) |
32 | # libgdbmg1-dev (development version of GNU libc 2-linked GDBM library) |
33 | # So make sure that for any libraries you wish to link Perl with under |
34 | # Debian or Red Hat you have the -dev packages installed. |
35 | # |
36 | # Some operating systems (e.g., Solaris 2.6) will link to a versioned shared |
37 | # library implicitly. For example, on Solaris, `ld foo.o -lgdbm' will find an |
38 | # appropriate version of libgdbm, if one is available; Linux, however, doesn't |
39 | # do the implicit mapping. |
40 | ignore_versioned_solibs='y' |
41 | |
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42 | # BSD compatability library no longer needed |
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43 | # 'kaffe' has a /usr/lib/libnet.so which is not at all relevent for perl. |
44 | set `echo X "$libswanted "| sed -e 's/ bsd / /' -e 's/ net / /'` |
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45 | shift |
46 | libswanted="$*" |
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47 | |
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48 | # If you have glibc, then report the version for ./myconfig bug reporting. |
49 | # (Configure doesn't need to know the specific version since it just uses |
50 | # gcc to load the library for all tests.) |
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51 | # We don't use __GLIBC__ and __GLIBC_MINOR__ because they |
52 | # are insufficiently precise to distinguish things like |
53 | # libc-2.0.6 and libc-2.0.7. |
54 | if test -L /lib/libc.so.6; then |
55 | libc=`ls -l /lib/libc.so.6 | awk '{print $NF}'` |
56 | libc=/lib/$libc |
57 | fi |
58 | |
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59 | # Configure may fail to find lstat() since it's a static/inline |
60 | # function in <sys/stat.h>. |
61 | d_lstat=define |
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62 | |
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63 | # The system malloc() is about as fast and as frugal as perl's. |
64 | # Since the system malloc() has been the default since at least |
65 | # 5.001, we might as well leave it that way. --AD 10 Jan 2002 |
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66 | case "$usemymalloc" in |
67 | '') usemymalloc='n' ;; |
68 | esac |
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69 | |
70 | case "$optimize" in |
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71 | '') # If we have modern enough gcc and well-supported enough CPU, |
72 | # crank up the optimization level. |
73 | case "`${cc:-gcc} -v 2>&1`" in |
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74 | *"gcc version 2.95"*|*"gcc version 3."*) |
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75 | case "`arch 2>&1`" in |
76 | i?86|ppc) optimize='-O3' ;; |
77 | esac |
78 | ;; |
79 | esac |
80 | case "$optimize" in |
81 | '') optimize='-O2' ;; |
82 | esac |
83 | ;; |
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84 | esac |
85 | |
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86 | # Are we using ELF? Thanks to Kenneth Albanowski <kjahds@kjahds.com> |
87 | # for this test. |
88 | cat >try.c <<'EOM' |
89 | /* Test for whether ELF binaries are produced */ |
90 | #include <fcntl.h> |
91 | #include <stdlib.h> |
92 | main() { |
93 | char buffer[4]; |
94 | int i=open("a.out",O_RDONLY); |
95 | if(i==-1) |
96 | exit(1); /* fail */ |
97 | if(read(i,&buffer[0],4)<4) |
98 | exit(1); /* fail */ |
99 | if(buffer[0] != 127 || buffer[1] != 'E' || |
100 | buffer[2] != 'L' || buffer[3] != 'F') |
101 | exit(1); /* fail */ |
102 | exit(0); /* succeed (yes, it's ELF) */ |
103 | } |
104 | EOM |
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105 | if ${cc:-gcc} try.c >/dev/null 2>&1 && $run ./a.out; then |
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106 | cat <<'EOM' >&4 |
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107 | |
108 | You appear to have ELF support. I'll try to use it for dynamic loading. |
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109 | If dynamic loading doesn't work, read hints/linux.sh for further information. |
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110 | EOM |
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111 | |
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112 | else |
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113 | cat <<'EOM' >&4 |
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114 | |
115 | You don't have an ELF gcc. I will use dld if possible. If you are |
116 | using a version of DLD earlier than 3.2.6, or don't have it at all, you |
117 | should probably upgrade. If you are forced to use 3.2.4, you should |
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118 | uncomment a couple of lines in hints/linux.sh and restart Configure so |
119 | that shared libraries will be disallowed. |
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120 | |
121 | EOM |
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122 | lddlflags="-r $lddlflags" |
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123 | # These empty values are so that Configure doesn't put in the |
124 | # Linux ELF values. |
125 | ccdlflags=' ' |
126 | cccdlflags=' ' |
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127 | ccflags="-DOVR_DBL_DIG=14 $ccflags" |
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128 | so='sa' |
129 | dlext='o' |
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130 | nm_so_opt=' ' |
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131 | ## If you are using DLD 3.2.4 which does not support shared libs, |
132 | ## uncomment the next two lines: |
133 | #ldflags="-static" |
134 | #so='none' |
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135 | |
136 | # In addition, on some systems there is a problem with perl and NDBM |
137 | # which causes AnyDBM and NDBM_File to lock up. This is evidenced |
138 | # in the tests as AnyDBM just freezing. Apparently, this only |
139 | # happens on a.out systems, so we disable NDBM for all a.out linux |
140 | # systems. If someone can suggest a more robust test |
141 | # that would be appreciated. |
142 | # |
143 | # More info: |
144 | # Date: Wed, 7 Feb 1996 03:21:04 +0900 |
145 | # From: Jeffrey Friedl <jfriedl@nff.ncl.omron.co.jp> |
146 | # |
147 | # I tried compiling with DBM support and sure enough things locked up |
148 | # just as advertised. Checking into it, I found that the lockup was |
149 | # during the call to dbm_open. Not *in* dbm_open -- but between the call |
150 | # to and the jump into. |
151 | # |
152 | # To make a long story short, making sure that the *.a and *.sa pairs of |
153 | # /usr/lib/lib{m,db,gdbm}.{a,sa} |
154 | # were perfectly in sync took care of it. |
155 | # |
156 | # This will generate a harmless Whoa There! message |
157 | case "$d_dbm_open" in |
158 | '') cat <<'EOM' >&4 |
159 | |
160 | Disabling ndbm. This will generate a Whoa There message in Configure. |
161 | Read hints/linux.sh for further information. |
162 | EOM |
163 | # You can override this with Configure -Dd_dbm_open |
164 | d_dbm_open=undef |
165 | ;; |
166 | esac |
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167 | fi |
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168 | |
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169 | rm -f try.c a.out |
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170 | |
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171 | if /bin/sh -c exit; then |
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172 | echo '' |
173 | echo 'You appear to have a working bash. Good.' |
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174 | else |
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175 | cat << 'EOM' >&4 |
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176 | |
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177 | *********************** Warning! ********************* |
178 | It would appear you have a defective bash shell installed. This is likely to |
179 | give you a failure of op/exec test #5 during the test phase of the build, |
180 | Upgrading to a recent version (1.14.4 or later) should fix the problem. |
181 | ****************************************************** |
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182 | EOM |
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183 | |
184 | fi |
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185 | |
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186 | # On SPARClinux, |
187 | # The following csh consistently coredumped in the test directory |
188 | # "/home/mikedlr/perl5.003_94/t", though not most other directories. |
189 | |
190 | #Name : csh Distribution: Red Hat Linux (Rembrandt) |
191 | #Version : 5.2.6 Vendor: Red Hat Software |
192 | #Release : 3 Build Date: Fri May 24 19:42:14 1996 |
193 | #Install date: Thu Jul 11 16:20:14 1996 Build Host: itchy.redhat.com |
194 | #Group : Shells Source RPM: csh-5.2.6-3.src.rpm |
195 | #Size : 184417 |
196 | #Description : BSD c-shell |
197 | |
198 | # For this reason I suggest using the much bug-fixed tcsh for globbing |
199 | # where available. |
200 | |
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201 | # November 2001: That warning's pretty old now and probably not so |
202 | # relevant, especially since perl now uses File::Glob for globbing. |
203 | # We'll still look for tcsh, but tone down the warnings. |
204 | # Andy Dougherty, Nov. 6, 2001 |
205 | if $csh -c 'echo $version' >/dev/null 2>&1; then |
206 | echo 'Your csh is really tcsh. Good.' |
207 | else |
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208 | if xxx=`./UU/loc tcsh blurfl $pth`; $test -f "$xxx"; then |
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209 | echo "Found tcsh. I'll use it for globbing." |
210 | # We can't change Configure's setting of $csh, due to the way |
211 | # Configure handles $d_portable and commands found in $loclist. |
212 | # We can set the value for CSH in config.h by setting full_csh. |
213 | full_csh=$xxx |
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214 | elif [ -f "$csh" ]; then |
215 | echo "Couldn't find tcsh. Csh-based globbing might be broken." |
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216 | fi |
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217 | fi |
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218 | |
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219 | # Shimpei Yamashita <shimpei@socrates.patnet.caltech.edu> |
220 | # Message-Id: <33EF1634.B36B6500@pobox.com> |
221 | # |
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222 | # The DR2 of MkLinux (osname=linux,archname=ppc-linux) may need |
223 | # special flags passed in order for dynamic loading to work. |
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224 | # instead of the recommended: |
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225 | # |
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226 | # ccdlflags='-rdynamic' |
227 | # |
228 | # it should be: |
229 | # ccdlflags='-Wl,-E' |
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230 | # |
231 | # So if your DR2 (DR3 came out summer 1998, consider upgrading) |
232 | # has problems with dynamic loading, uncomment the |
233 | # following three lines, make distclean, and re-Configure: |
234 | #case "`uname -r | sed 's/^[0-9.-]*//'``arch`" in |
235 | #'osfmach3ppc') ccdlflags='-Wl,-E' ;; |
236 | #esac |
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237 | |
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238 | case "`uname -r`" in |
239 | sparc-linux) |
240 | case "$cccdlflags" in |
241 | *-fpic*) cccdlflags="`echo $cccdlflags|sed 's/-fpic/-fPIC/'`" ;; |
242 | *) cccdlflags="$cccdlflags -fPIC" ;; |
243 | esac |
244 | ;; |
245 | esac |
246 | |
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247 | # This script UU/usethreads.cbu will get 'called-back' by Configure |
248 | # after it has prompted the user for whether to use threads. |
249 | cat > UU/usethreads.cbu <<'EOCBU' |
250 | case "$usethreads" in |
251 | $define|true|[yY]*) |
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252 | ccflags="-D_REENTRANT -D_GNU_SOURCE -DTHREADS_HAVE_PIDS $ccflags" |
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253 | set `echo X "$libswanted "| sed -e 's/ c / pthread c /'` |
254 | shift |
255 | libswanted="$*" |
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256 | |
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257 | # Somehow at least in Debian 2.2 these manage to escape |
258 | # the #define forest of <features.h> and <time.h> so that |
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259 | # the hasproto macro of Configure doesn't see these protos, |
260 | # even with the -D_GNU_SOURCE. |
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261 | |
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262 | d_asctime_r_proto="$define" |
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263 | d_crypt_r_proto="$define" |
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264 | d_ctime_r_proto="$define" |
265 | d_gmtime_r_proto="$define" |
266 | d_localtime_r_proto="$define" |
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267 | d_random_r_proto="$define" |
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268 | |
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269 | ;; |
270 | esac |
271 | EOCBU |
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272 | |
273 | cat > UU/uselargefiles.cbu <<'EOCBU' |
274 | # This script UU/uselargefiles.cbu will get 'called-back' by Configure |
275 | # after it has prompted the user for whether to use large files. |
276 | case "$uselargefiles" in |
277 | ''|$define|true|[yY]*) |
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278 | # Keep this in the left margin. |
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279 | ccflags_uselargefiles="-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64" |
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280 | |
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281 | ccflags="$ccflags $ccflags_uselargefiles" |
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282 | ;; |
283 | esac |
284 | EOCBU |