Warn if the version of the operating system used to compile gcc

differs from the current version of the operating system.
Also display the gcc compilation os and version in myconfig.
Inspiration from

Subject: Re: [ID 20000710.003] ERRORS!!
Message-ID: <20000710155416.A1384@O2.chapin.edu>

p4raw-id: //depot/perl@6460

diff --git a/Configure b/Configure
index 5be461d..cc4fa3e 100755 (executable)
--- a/Configure
+++ b/Configure
@@ -20,7 +20,7 @@
 
 # $Id: Head.U,v 3.0.1.9 1997/02/28 15:02:09 ram Exp $
 #
-# Generated on Sat Jul 29 00:58:08 EET DST 2000 [metaconfig 3.0 PL70]
+# Generated on Sat Jul 29 02:22:13 EET DST 2000 [metaconfig 3.0 PL70]
 # (with additional metaconfig patches by perlbug@perl.com)
 
 cat >/tmp/c1$$ <<EOF
@@ -597,6 +597,7 @@ fflushNULL=''
 fflushall=''
 fpossize=''
 fpostype=''
+gccosandvers=''
 gccversion=''
 gidformat=''
 gidsign=''
@@ -3180,6 +3181,36 @@ $rm -f gccvers*
 case "$gccversion" in
 1*) cpp=`./loc gcc-cpp $cpp $pth` ;;
 esac
+case "$gccversion" in
+'') gccosandvers='' ;;
+*) gccosandvers=`gcc -v 2>&1|grep '/specs$'|sed 's!.*/[^-]*-[^-]*-\([^/]*\)/'$gccversion'/specs$!\1!'`
+   case "$gccosandvers" in
+   $osname$osvers) ;;
+   $osname*) cat <<EOM >&4
+
+*** WHOA THERE!!! ***
+
+    Your gcc has not been compiled for the exact release of
+    your operating system ($gccosandvers versus $osname$osvers).
+
+    In general it is a good idea to keep gcc synchronized with
+    the operating system because otherwise serious problems
+    may ensue when trying to compile software, like Perl.
+
+    I'm trying to be optimistic here, though, and will continue.
+    If later during the configuration and build icky compilation
+    problems appear, I suggest reinstalling the gcc to match
+    your operating system release.
+
+EOM
+      ;;
+   *) ;; # failed to parse, better be silent
+   esac
+   ;;
+esac
+
+
+
 
 : see how we invoke the C preprocessor
 echo " "
@@ -15610,6 +15641,7 @@ freetype='$freetype'
 full_ar='$full_ar'
 full_csh='$full_csh'
 full_sed='$full_sed'
+gccosandvers='$gccosandvers'
 gccversion='$gccversion'
 gidformat='$gidformat'
 gidsign='$gidsign'

diff --git a/myconfig.SH b/myconfig.SH
index 7861f5e..a797e60 100644 (file)
--- a/myconfig.SH
+++ b/myconfig.SH
@@ -37,7 +37,7 @@ Summary of my $package (revision $baserev version $PERL_VERSION subversion $PERL
     useperlio=$useperlio d_sfio=$d_sfio uselargefiles=$uselargefiles 
     use64bitint=$use64bitint use64bitall=$use64bitall uselongdouble=$uselongdouble usesocks=$usesocks
   Compiler:
-    cc='$cc', optimize='$optimize', gccversion=$gccversion
+    cc='$cc', optimize='$optimize', gccversion=$gccversion, gccosandvers=$gccosandvers
     cppflags='$cppflags'
     ccflags ='$ccflags'
     stdchar='$stdchar', d_stdstdio=$d_stdstdio, usevfork=$usevfork