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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@lafcol.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 | # Add ability to use command-line overrides for optinal settings. |
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13 | |
14 | # perl goes into the /usr tree. See the Filesystem Standard |
15 | # available via anonymous FTP at tsx-11.mit.edu in |
16 | # /pub/linux/docs/linux-standards/fsstnd. |
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17 | # Allow a command line override, e.g. Configure -Dprefix=/foo/bar |
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18 | case "$prefix" in |
19 | '') prefix='/usr' ;; |
20 | esac |
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21 | |
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22 | # This may not be needed in 5.002 since sigaction is used. |
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23 | # gcc-2.6.3 defines _G_HAVE_BOOL to 1, but doesn't actually supply bool. |
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24 | ccflags="-Dbool=char -DHAS_BOOL $ccflags" |
25 | |
26 | # BSD compatability library no longer needed |
27 | set `echo X "$libswanted "| sed -e 's/ bsd / /'` |
28 | shift |
29 | libswanted="$*" |
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30 | |
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31 | # Configure may fail to find lstat() since it's a static/inline |
32 | # function in <sys/stat.h>. |
33 | d_lstat=define |
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34 | |
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35 | # I think Configure gets this right now, but I'd appreciate reports. |
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36 | malloctype='void *' |
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37 | |
38 | # Explanation? |
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39 | case "$usemymalloc" in |
40 | '') usemymalloc='n' ;; |
41 | esac |
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42 | |
43 | case "$optimize" in |
44 | '') optimize='-O2' ;; |
45 | esac |
46 | |
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47 | # Are we using ELF? Thanks to Kenneth Albanowski <kjahds@kjahds.com> |
48 | # for this test. |
49 | cat >try.c <<'EOM' |
50 | /* Test for whether ELF binaries are produced */ |
51 | #include <fcntl.h> |
52 | #include <stdlib.h> |
53 | main() { |
54 | char buffer[4]; |
55 | int i=open("a.out",O_RDONLY); |
56 | if(i==-1) |
57 | exit(1); /* fail */ |
58 | if(read(i,&buffer[0],4)<4) |
59 | exit(1); /* fail */ |
60 | if(buffer[0] != 127 || buffer[1] != 'E' || |
61 | buffer[2] != 'L' || buffer[3] != 'F') |
62 | exit(1); /* fail */ |
63 | exit(0); /* succeed (yes, it's ELF) */ |
64 | } |
65 | EOM |
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66 | if ${cc:-gcc} try.c >/dev/null 2>&1 && ./a.out; then |
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67 | cat <<'EOM' |
68 | |
69 | You appear to have ELF support. I'll try to use it for dynamic loading. |
70 | EOM |
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71 | nm_so_opt='-dynamic' |
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72 | else |
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73 | cat <<'EOM' |
74 | |
75 | You don't have an ELF gcc. I will use dld if possible. If you are |
76 | using a version of DLD earlier than 3.2.6, or don't have it at all, you |
77 | should probably upgrade. If you are forced to use 3.2.4, you should |
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78 | uncomment a couple of lines in hints/linux.sh and restart Configure so |
79 | that shared libraries will be disallowed. |
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80 | |
81 | EOM |
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82 | lddlflags="-r $lddlflags" |
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83 | # These empty values are so that Configure doesn't put in the |
84 | # Linux ELF values. |
85 | ccdlflags=' ' |
86 | cccdlflags=' ' |
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87 | ccflags="-DOVR_DBL_DIG=14 $ccflags" |
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88 | so='sa' |
89 | dlext='o' |
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90 | nm_so_opt=' ' |
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91 | ## If you are using DLD 3.2.4 which does not support shared libs, |
92 | ## uncomment the next two lines: |
93 | #ldflags="-static" |
94 | #so='none' |
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95 | fi |
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96 | |
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97 | rm -f try.c a.out |
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98 | |
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99 | if /bin/bash -c exit; then |
100 | echo You appear to have a working bash. Good. |
101 | else |
102 | cat << 'EOM' |
103 | Warning: it would appear you have a defective bash shell installed. This is |
104 | likely to give you a failure of op/exec test #5 during the test phase of the |
105 | build, Upgrading to a recent version (1.14.4 or later) should fix the |
106 | problem. |
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107 | |
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108 | EOM |
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109 | |
110 | fi |
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111 | |
112 | # In addition, on some systems there is a problem with perl and NDBM, which |
113 | # causes AnyDBM and NDBM_File to lock up. This is evidenced in the tests as |
114 | # AnyDBM just freezing. Currently we disable NDBM for all linux systems. |
115 | # If someone can suggest a more robust test, that would be appreciated. |
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116 | # |
117 | # More info: |
118 | # Date: Wed, 7 Feb 1996 03:21:04 +0900 |
119 | # From: Jeffrey Friedl <jfriedl@nff.ncl.omron.co.jp> |
120 | # |
121 | # I tried compiling with DBM support and sure enough things locked up |
122 | # just as advertised. Checking into it, I found that the lockup was |
123 | # during the call to dbm_open. Not *in* dbm_open -- but between the call |
124 | # to and the jump into. |
125 | # |
126 | # To make a long story short, making sure that the *.a and *.sa pairs of |
127 | # /usr/lib/lib{m,db,gdbm}.{a,sa} |
128 | # were perfectly in sync took care of it. |
129 | # |
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130 | # This will generate a harmless message: |
131 | # Hmm...You had some extra variables I don't know about...I'll try to keep 'em. |
132 | # Propagating recommended variable d_dbm_open |
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133 | case "$d_dbm_open" in |
134 | '') d_dbm_open=undef ;; |
135 | esac |
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136 | |