Commit 80f27877 authored by Richard Levitte's avatar Richard Levitte
Browse files

INSTALL: Add a note about backward compatibility and "make variables" 



Reviewed-by: default avatarAndy Polyakov <appro@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5641)
parent f5846179

INSTALL

+19 −1
Original line number Diff line number Diff line
@@ -536,7 +536,7 @@ 
                   these flags interact with those variables.



  VAR=value

                   Assignment if environment variable for Configure.  These

                   Assignment of environment variable for Configure.  These

                   work just like normal environment variable assignments,

                   but are supported on all platforms and are confined to

                   the configuration scripts only.  These assignments override
@@ -587,6 +587,24 @@ 


                       ./config -DFOO CPPFLAGS=-DBAR -DCOOKIE



                   Backward compatibility note:



                   To be compatible with older configuration scripts, the

                   environment variables are ignored if compiling / linking

                   flags are given on the command line, except for these:



                   AR, CC, CXX, CROSS_COMPILE, HASHBANGPERL, PERL, RANLIB, RC

                   and WINDRES



                   For example, the following command will not see -DBAR:



                        CPPFLAGS=-DBAR ./config -DCOOKIE



                   However, the following will see both set variables:



                        CC=gcc CROSS_COMPILE=x86_64-w64-mingw32- \

                        ./config -DCOOKIE



  reconf

  reconfigure

                   Reconfigure from earlier data.  This fetches the previous