new workaround for ubuntu 18.04

diff --git a/INSTALL b/INSTALL
index 71cc763..de3269a 100644 (file)
--- a/INSTALL
+++ b/INSTALL
@@ -40,19 +40,29 @@ Type this as normal user:
  # cd ext
  # ruby extconf.rb && make
 
-If that fails on missing GTK header file (gtk.h), you can try to
-inject cflags with such a command:
+*** Troubleshooting:
+
+- if that fails on missing GTK header file (gtk.h), you can try to
+  inject cflags with such a command:
 
  # perl -pi -e 's/(CXXFLAGS.*)/$1 `pkg-config --cflags gtk+-2.0`/' Makefile
  # make
 
-If that still fails on redefinition of struct re_registers, you can
-try to workaround with:
+- if that fails on redefinition of struct re_registers and you have
+  ruby-2.3, you can try to workaround with:
 
  # cp /usr/include/ruby-2.3.0/ruby.h .
  # perl -pi -e 's/.*HAVE_RUBY_ENCODING_H.*//' ruby.h
  # make
 
+- if that fails on redefinition of struct re_registers and you have
+  ruby-2.5, you can try to workaround with:
+
+ # mkdir exiv2
+ # cp -a /usr/include/exiv2/* exiv2
+ # perl -pi -e 's/#define EXV_HAVE_REGEX 1//' exiv2/exv_conf.h
+ # make
+
 And type this as superuser:
 
  $ ruby setup.rb install