Original bug ID: 6867
Reporter: eugenk
Assigned to: @gasche
Status: closed (set by @xavierleroy on 2016-12-07T10:49:19Z)
Resolution: duplicate
Priority: normal
Severity: major
Platform: x68-64
OS: ArchLinux
OS Version: 4.0.1-1-ARCH
Version: 4.02.1
Fixed in version: 4.02.2+dev / +rc1
Category: configure and build/install
Duplicate of: #6628

Bug description

The configure script exits if the compiler flags contain (valid!) strings of the form "-march=core2". Thus, people can't compile it properly on their systems.

Steps to reproduce

Run

./configure --prefix /home/eugen/.linuxbrew --mandir /home/eugen/.linuxbrew/Cellar/objective-caml/4.02.1_2/share/man -with-debug-runtime -cc /usr/bin/gcc -Os -w -pipe -march=core2 -aspp /usr/bin/gcc -Os -w -pipe -march=core2 -c -no-graph

and you get

[ERROR!]Arguments to this script look like '-prefix /foo/bar', not '-prefix=/foo/bar' (note the '=').

Additional information

Removing lines 88-90 from the configure script fixes this issue:

if echo "$configure_options" | grep -q -e '--\?[a-zA-Z0-9-]\+='; then
  err "Arguments to this script look like '-prefix /foo/bar', not '-prefix=/foo/bar' (note the '=')."
fi