From 8338e36774b7e3cc49c6f8e0553b2f22973bc322 Mon Sep 17 00:00:00 2001
From: Jarkko Hietaniemi <jhi@iki.fi>
Date: Sun, 25 Nov 2001 05:32:18 +0000
Subject: [PATCH] Revert the /proc/self/auxv experiment for now.

p4raw-id: //depot/perl@13257
---
 lib/ExtUtils.t    |  8 +-------
 perl.c            | 55 +++++--------------------------------------------------
 t/lib/1_compile.t |  8 +-------
 3 files changed, 7 insertions(+), 64 deletions(-)

diff --git a/lib/ExtUtils.t b/lib/ExtUtils.t
index 59cb978..24d85d3 100644
--- a/lib/ExtUtils.t
+++ b/lib/ExtUtils.t
@@ -14,8 +14,7 @@ use ExtUtils::Constant qw (constant_types C_constant XS_constant autoload);
 use Config;
 use File::Spec::Functions qw(catfile rel2abs);
 # Because were are going to be changing directory before running Makefile.PL
-my $perl = $^X;
-print "# perl=$perl\n";
+my $perl;
 $perl = rel2abs( $^X ) unless $] < 5.006; # Hack. Until 5.00503 has rel2abs
 # ExtUtils::Constant::C_constant uses $^X inside a comment, and we want to
 # compare output to ensure that it is the same. We were probably run as ./perl
@@ -25,7 +24,6 @@ $^X = $perl;
 
 print "# perl=$perl\n";
 my $runperl = "$perl -x \"-I../../lib\"";
-print "# runperl=$runperl\n";
 
 $| = 1;
 
@@ -464,10 +462,6 @@ $test++;
 my $expect = $constant_types . $C_constant .
   "\n#### XS Section:\n" . $XS_constant;
 
-# Depending on whether $^X resolves symbolic links
-# or not we may have ".../perl" or ".../t/perl".
-$regen =~ s/\#!.+perl -w$/#!$perl -w/m;
-
 if ($expect eq $regen) {
   print "ok $test\n";
 } else {
diff --git a/perl.c b/perl.c
index 54f68c7..8b3066e 100644
--- a/perl.c
+++ b/perl.c
@@ -3415,7 +3415,7 @@ Perl_init_argv_symbols(pTHX_ register int argc, register char **argv)
 
 #ifdef HAS_PROCSELFEXE
 /* This is a function so that we don't hold on to MAXPATHLEN
-   bytes of stack longer than necessary.
+   bytes of stack longer than necessary
  */
 STATIC void
 S_procself_val(pTHX_ SV *sv, char *arg0)
@@ -3431,47 +3431,6 @@ S_procself_val(pTHX_ SV *sv, char *arg0)
 }
 #endif /* HAS_PROCSELFEXE */
 
-#if defined(sun) && defined(__svr4__) /* solaris */
-#include <sys/auxv.h>
-STATIC void
-S_procselfauxv(pTHX_ SV *sv, char *arg0) {
-    auxv_t auxv;
-    int fh;
-    int n;
-
-    fh = open("/proc/self/auxv", O_RDONLY);
-    if (fh < 0) {
-        sv_setpv(sv, arg0);
-        return;
-    }
-
-    while (1) {
-        n = read(fh, &auxv, sizeof(auxv));
-        if (n != sizeof(auxv))
-            break;
-        if (auxv.a_type == AT_SUN_EXECNAME) {
-            close(fh);
-            sv_setpv(sv, auxv.a_un.a_ptr);
-	    if (!strchr(SvPVX(sv), '/')) {
-		 /* If no slash at all, probably started as "./perl" 
-		  * Do not compare against "perl", though, since the
-		  * binary might be called something else. */
-		 STRLEN len;
-		 char *s = SvPV(sv, len);
-		 SvGROW(sv, len + 2);
-		 memmove(s + 2, s, len);
-		 SvPVX(sv)[0] = '.';
-		 SvPVX(sv)[1] = '/';
-		 SvCUR(sv) += 2;
-	    }
-	    return;
-        }
-    }
-    close(fh);
-    sv_setpv(sv, arg0);
-}
-#endif /* solaris */
-
 STATIC void
 S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register char **env)
 {
@@ -3508,15 +3467,11 @@ S_init_postdump_symbols(pTHX_ register int argc, register char **argv, register
 #ifdef HAS_PROCSELFEXE
 	S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
 #else
-#   ifdef OS2
+#ifdef OS2
 	sv_setpv(GvSV(tmpgv), os2_execname(aTHX));
-#   else
-#       if defined(sun) && defined(__svr4__) /* solaris */
-	S_procselfauxv(aTHX_ GvSV(tmpgv), PL_origargv[0]);
-#       else
-	sv_setpv(GvSV(tmpgv), PL_origargv[0]);
-#       endif
-#   endif
+#else
+	sv_setpv(GvSV(tmpgv),PL_origargv[0]);
+#endif
 #endif
     }
     if ((PL_envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV))) {
diff --git a/t/lib/1_compile.t b/t/lib/1_compile.t
index af2c168..51d4d6a 100644
--- a/t/lib/1_compile.t
+++ b/t/lib/1_compile.t
@@ -1,13 +1,7 @@
 #!./perl
 
 BEGIN {
-    if (-d '../pod' && -d '../t') {
-	require File::Spec;
-	my ($v,$d,$f) = File::Spec->splitpath($^X);
-	$^X = File::Spec->catfile(File::Spec->curdir, $f)
-	    if $^X eq File::Spec->catfile(File::Spec->updir, $f);
-	chdir '..';
-    }
+    chdir '..' if -d '../pod' && -d '../t';
     @INC = 'lib';
 }
 
-- 
2.7.4