1.1 --- a/INSTALL Wed Feb 10 19:05:20 2010 +0100
1.2 +++ b/INSTALL Fri Feb 12 22:24:26 2010 +0100
1.3 @@ -173,3 +173,25 @@
1.4 --without-coin
1.5
1.6 Disable COIN-OR support.
1.7 +
1.8 +
1.9 +Makefile Variables
1.10 +==================
1.11 +
1.12 +Some Makefile variables are reserved by the GNU Coding Standards for
1.13 +the use of the "user" - the person building the package. For instance,
1.14 +CXX and CXXFLAGS are such variables, and have the same meaning as
1.15 +explained in the previous section. These variables can be set on the
1.16 +command line when invoking `make' like this:
1.17 +`make [VARIABLE=VALUE]...'
1.18 +
1.19 +WARNINGCXXFLAGS is a non-standard Makefile variable introduced by us
1.20 +to hold several compiler flags related to warnings. Its default value
1.21 +can be overridden when invoking `make'. For example to disable all
1.22 +warning flags use `make WARNINGCXXFLAGS='.
1.23 +
1.24 +In order to turn off a single flag from the default set of warning
1.25 +flags, you can use the CXXFLAGS variable, since this is passed after
1.26 +WARNINGCXXFLAGS. For example to turn off `-Wold-style-cast' (which is
1.27 +used by default when g++ is detected) you can use
1.28 +`make CXXFLAGS="-g -O2 -Wno-old-style-cast"'.