config/3681: C compiler options beginning with "+" causes error in src/Configure

[Doug Yatcilla <ya...@umdnj.edu>]

>Number:         3681
>Category:       config
>Synopsis:       C compiler options beginning with "+" causes error in src/Configure
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    apache
>State:          open
>Class:          sw-bug
>Submitter-Id:   apache
>Arrival-Date:   Fri Jan 15 08:40:01 PST 1999
>Last-Modified:
>Originator:     yatcilda@umdnj.edu
>Organization:
apache
>Release:        1.3.4
>Environment:
HP-UX B.10.20 E ; HP C complier
>Description:
Some HP C complier options start with a "+" rather than a "-"
(such as "+z" to generate position independent code and "+DAmodel" to
cross compile for another HP "model" architecture.)  

Apparently, the "src/Configure" program assumes each CFLAGS option
begins with a "-" and will create a bad $AP_CONFIG_AUTO_H header file
when "+" complier options are used.
>How-To-Repeat:
I want to build apache to work on many HP systems:

CFLAGS="+DAportable" \
./configure --prefix=/products/apache

But, when I try to make, it stops due to syntax error in src/include/ap_config_auto.h: 

...
/* build flag: -DUSE_HSREGEX +DAportable */
#ifndef USE_HSREGEX +DAportable
#define USE_HSREGEX +DAportable 1
#endif
...

The other CFLAGS set by configure are:
-DHPUX10 -Aa -D_HPUX_SOURCE -DUSE_HSREGEX 

>Fix:
src/Configure-dist is what came with apache1.3.4

I think this (or equivalent) change to sed string is needed anytime 
all C complier options are assumed to only begin with "-"

> diff -c src/Configure src/Configure-dist
*** src/Configure       Fri Jan 15 11:30:45 1999
--- src/Configure-dist  Wed Jan 13 12:19:09 1999
***************
*** 1816,1822 ****
  TEXTRA_CFLAGS=`egrep '^EXTRA_CFLAGS=' Makefile.config | tail -1 |\
               sed -e 's;^EXTRA_CFLAGS=;;' -e 's;\`.*\`;;'`
  tmpstr=`echo $CFLAGS $TEXTRA_CFLAGS |\
!       sed -e 's;[     ]\([-+]\);!\1;g' -e 's/\\\"/\"/g' -e 's/\([^\\]\)"/\1/g'`
  OIFS="$IFS"
  IFS='!'
  for cflag in $tmpstr; do
--- 1816,1822 ----
  TEXTRA_CFLAGS=`egrep '^EXTRA_CFLAGS=' Makefile.config | tail -1 |\
               sed -e 's;^EXTRA_CFLAGS=;;' -e 's;\`.*\`;;'`
  tmpstr=`echo $CFLAGS $TEXTRA_CFLAGS |\
!       sed -e 's;[     ]-;!-;g' -e 's/\\\"/\"/g' -e 's/\([^\\]\)"/\1/g'`
  OIFS="$IFS"
  IFS='!'
  for cflag in $tmpstr; do
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