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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 |
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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. |
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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 "$usemymalloc" in |
67 | '') usemymalloc='n' ;; |
68 | esac |
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69 | |
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70 | # Check if we're about to use Intel's ICC compiler |
71 | case "`${cc:-cc} -V 2>&1`" in |
72 | *"Intel(R) C++ Compiler"*) |
73 | # This is needed for Configure's prototype checks to work correctly |
74 | ccflags="-we147 $ccflags" |
75 | # If we're using ICC, we usually want the best performance |
76 | case "$optimize" in |
77 | '') optimize='-O3' ;; |
78 | esac |
79 | ;; |
80 | esac |
81 | |
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82 | case "$optimize" in |
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83 | # use -O2 by default ; -O3 doesn't seem to bring significant benefits with gcc |
84 | '') optimize='-O2' ;; |
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85 | esac |
86 | |
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87 | # Are we using ELF? Thanks to Kenneth Albanowski <kjahds@kjahds.com> |
88 | # for this test. |
89 | cat >try.c <<'EOM' |
90 | /* Test for whether ELF binaries are produced */ |
91 | #include <fcntl.h> |
92 | #include <stdlib.h> |
93 | main() { |
94 | char buffer[4]; |
95 | int i=open("a.out",O_RDONLY); |
96 | if(i==-1) |
97 | exit(1); /* fail */ |
98 | if(read(i,&buffer[0],4)<4) |
99 | exit(1); /* fail */ |
100 | if(buffer[0] != 127 || buffer[1] != 'E' || |
101 | buffer[2] != 'L' || buffer[3] != 'F') |
102 | exit(1); /* fail */ |
103 | exit(0); /* succeed (yes, it's ELF) */ |
104 | } |
105 | EOM |
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106 | if ${cc:-gcc} try.c >/dev/null 2>&1 && $run ./a.out; then |
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107 | cat <<'EOM' >&4 |
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108 | |
109 | You appear to have ELF support. I'll try to use it for dynamic loading. |
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110 | If dynamic loading doesn't work, read hints/linux.sh for further information. |
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111 | EOM |
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112 | |
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113 | else |
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114 | cat <<'EOM' >&4 |
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115 | |
116 | You don't have an ELF gcc. I will use dld if possible. If you are |
117 | using a version of DLD earlier than 3.2.6, or don't have it at all, you |
118 | should probably upgrade. If you are forced to use 3.2.4, you should |
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119 | uncomment a couple of lines in hints/linux.sh and restart Configure so |
120 | that shared libraries will be disallowed. |
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121 | |
122 | EOM |
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123 | lddlflags="-r $lddlflags" |
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124 | # These empty values are so that Configure doesn't put in the |
125 | # Linux ELF values. |
126 | ccdlflags=' ' |
127 | cccdlflags=' ' |
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128 | ccflags="-DOVR_DBL_DIG=14 $ccflags" |
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129 | so='sa' |
130 | dlext='o' |
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131 | nm_so_opt=' ' |
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132 | ## If you are using DLD 3.2.4 which does not support shared libs, |
133 | ## uncomment the next two lines: |
134 | #ldflags="-static" |
135 | #so='none' |
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136 | |
137 | # In addition, on some systems there is a problem with perl and NDBM |
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138 | # which causes AnyDBM and NDBM_File to lock up. This is evidenced |
139 | # in the tests as AnyDBM just freezing. Apparently, this only |
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140 | # happens on a.out systems, so we disable NDBM for all a.out linux |
141 | # systems. If someone can suggest a more robust test |
142 | # that would be appreciated. |
143 | # |
144 | # More info: |
145 | # Date: Wed, 7 Feb 1996 03:21:04 +0900 |
146 | # From: Jeffrey Friedl <jfriedl@nff.ncl.omron.co.jp> |
147 | # |
148 | # I tried compiling with DBM support and sure enough things locked up |
149 | # just as advertised. Checking into it, I found that the lockup was |
150 | # during the call to dbm_open. Not *in* dbm_open -- but between the call |
151 | # to and the jump into. |
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152 | # |
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153 | # To make a long story short, making sure that the *.a and *.sa pairs of |
154 | # /usr/lib/lib{m,db,gdbm}.{a,sa} |
155 | # were perfectly in sync took care of it. |
156 | # |
157 | # This will generate a harmless Whoa There! message |
158 | case "$d_dbm_open" in |
159 | '') cat <<'EOM' >&4 |
160 | |
161 | Disabling ndbm. This will generate a Whoa There message in Configure. |
162 | Read hints/linux.sh for further information. |
163 | EOM |
164 | # You can override this with Configure -Dd_dbm_open |
165 | d_dbm_open=undef |
166 | ;; |
167 | esac |
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168 | fi |
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169 | |
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170 | rm -f try.c a.out |
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171 | |
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172 | if /bin/sh -c exit; then |
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173 | echo '' |
174 | echo 'You appear to have a working bash. Good.' |
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175 | else |
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176 | cat << 'EOM' >&4 |
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177 | |
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178 | *********************** Warning! ********************* |
179 | It would appear you have a defective bash shell installed. This is likely to |
180 | give you a failure of op/exec test #5 during the test phase of the build, |
181 | Upgrading to a recent version (1.14.4 or later) should fix the problem. |
182 | ****************************************************** |
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183 | EOM |
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184 | |
185 | fi |
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186 | |
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187 | # On SPARClinux, |
188 | # The following csh consistently coredumped in the test directory |
189 | # "/home/mikedlr/perl5.003_94/t", though not most other directories. |
190 | |
191 | #Name : csh Distribution: Red Hat Linux (Rembrandt) |
192 | #Version : 5.2.6 Vendor: Red Hat Software |
193 | #Release : 3 Build Date: Fri May 24 19:42:14 1996 |
194 | #Install date: Thu Jul 11 16:20:14 1996 Build Host: itchy.redhat.com |
195 | #Group : Shells Source RPM: csh-5.2.6-3.src.rpm |
196 | #Size : 184417 |
197 | #Description : BSD c-shell |
198 | |
199 | # For this reason I suggest using the much bug-fixed tcsh for globbing |
200 | # where available. |
201 | |
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202 | # November 2001: That warning's pretty old now and probably not so |
203 | # relevant, especially since perl now uses File::Glob for globbing. |
204 | # We'll still look for tcsh, but tone down the warnings. |
205 | # Andy Dougherty, Nov. 6, 2001 |
206 | if $csh -c 'echo $version' >/dev/null 2>&1; then |
207 | echo 'Your csh is really tcsh. Good.' |
208 | else |
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209 | if xxx=`./UU/loc tcsh blurfl $pth`; $test -f "$xxx"; then |
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210 | echo "Found tcsh. I'll use it for globbing." |
211 | # We can't change Configure's setting of $csh, due to the way |
212 | # Configure handles $d_portable and commands found in $loclist. |
213 | # We can set the value for CSH in config.h by setting full_csh. |
214 | full_csh=$xxx |
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215 | elif [ -f "$csh" ]; then |
216 | echo "Couldn't find tcsh. Csh-based globbing might be broken." |
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217 | fi |
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218 | fi |
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219 | |
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220 | # Shimpei Yamashita <shimpei@socrates.patnet.caltech.edu> |
221 | # Message-Id: <33EF1634.B36B6500@pobox.com> |
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222 | # |
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223 | # The DR2 of MkLinux (osname=linux,archname=ppc-linux) may need |
224 | # special flags passed in order for dynamic loading to work. |
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225 | # instead of the recommended: |
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226 | # |
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227 | # ccdlflags='-rdynamic' |
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228 | # |
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229 | # it should be: |
230 | # ccdlflags='-Wl,-E' |
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231 | # |
232 | # So if your DR2 (DR3 came out summer 1998, consider upgrading) |
233 | # has problems with dynamic loading, uncomment the |
234 | # following three lines, make distclean, and re-Configure: |
235 | #case "`uname -r | sed 's/^[0-9.-]*//'``arch`" in |
236 | #'osfmach3ppc') ccdlflags='-Wl,-E' ;; |
237 | #esac |
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238 | |
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239 | case "`uname -m`" in |
240 | sparc*) |
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241 | case "$cccdlflags" in |
242 | *-fpic*) cccdlflags="`echo $cccdlflags|sed 's/-fpic/-fPIC/'`" ;; |
243 | *) cccdlflags="$cccdlflags -fPIC" ;; |
244 | esac |
245 | ;; |
246 | esac |
247 | |
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248 | # SuSE8.2 has /usr/lib/libndbm* which are ld scripts rather than |
249 | # true libraries. The scripts cause binding against static |
250 | # version of -lgdbm which is a bad idea. So if we have 'nm' |
251 | # make sure it can read the file |
252 | # NI-S 2003/08/07 |
253 | if [ -r /usr/lib/libndbm.so -a -x /usr/bin/nm ] ; then |
254 | if /usr/bin/nm /usr/lib/libndbm.so >/dev/null 2>&1 ; then |
255 | echo 'Your shared -lndbm seems to be a real library.' |
256 | else |
257 | echo 'Your shared -lndbm is not a real library.' |
258 | set `echo X "$libswanted "| sed -e 's/ ndbm / /'` |
259 | shift |
260 | libswanted="$*" |
261 | fi |
262 | fi |
263 | |
264 | |
265 | # This script UU/usethreads.cbu will get 'called-back' by Configure |
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266 | # after it has prompted the user for whether to use threads. |
267 | cat > UU/usethreads.cbu <<'EOCBU' |
268 | case "$usethreads" in |
269 | $define|true|[yY]*) |
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270 | ccflags="-D_REENTRANT -D_GNU_SOURCE -DTHREADS_HAVE_PIDS $ccflags" |
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271 | set `echo X "$libswanted "| sed -e 's/ c / pthread c /'` |
272 | shift |
273 | libswanted="$*" |
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274 | |
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275 | # Somehow at least in Debian 2.2 these manage to escape |
276 | # the #define forest of <features.h> and <time.h> so that |
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277 | # the hasproto macro of Configure doesn't see these protos, |
278 | # even with the -D_GNU_SOURCE. |
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279 | |
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280 | d_asctime_r_proto="$define" |
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281 | d_crypt_r_proto="$define" |
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282 | d_ctime_r_proto="$define" |
283 | d_gmtime_r_proto="$define" |
284 | d_localtime_r_proto="$define" |
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285 | d_random_r_proto="$define" |
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286 | |
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287 | ;; |
288 | esac |
289 | EOCBU |
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290 | |
291 | cat > UU/uselargefiles.cbu <<'EOCBU' |
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292 | # This script UU/uselargefiles.cbu will get 'called-back' by Configure |
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293 | # after it has prompted the user for whether to use large files. |
294 | case "$uselargefiles" in |
295 | ''|$define|true|[yY]*) |
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296 | # Keep this in the left margin. |
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297 | ccflags_uselargefiles="-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64" |
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298 | |
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299 | ccflags="$ccflags $ccflags_uselargefiles" |
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300 | ;; |
301 | esac |
302 | EOCBU |