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Merge pull request #75 from djnym/port_env_handling

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Different fix for the OS environment vs Default environment
This commit is contained in:
Dave Smith 2011-05-20 08:18:42 -07:00
commit a34c1a7b12
1 changed files with 41 additions and 11 deletions
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52
src/rebar_port_compiler.erl
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@ -153,7 +153,7 @@ setup_env(Config) ->
DefaultEnvs = filter_envs(default_env(), []),
PortEnvs = rebar_config:get_list(Config, port_envs, []),
OverrideEnvs = filter_envs(PortEnvs, []),
RawEnv = DefaultEnvs ++ OverrideEnvs ++ os_env(),
RawEnv = apply_defaults(os_env(), DefaultEnvs) ++ OverrideEnvs,
expand_vars_loop(merge_each_var(RawEnv, [])).
%% ===================================================================
@ -266,7 +266,24 @@ compiler(".c++") -> "$CXX";
compiler(".C") -> "$CXX";
compiler(_) -> "$CC".
%%
%% Given a list of {Key, Value} variables, and another list of default
%% {Key, Value} variables, return a merged list where the rule is if the
%% default is expandable expand it with the value of the variable list,
%% otherwise just return the value of the variable.
%%
apply_defaults(Vars, Defaults) ->
dict:to_list(
dict:merge(fun(Key, VarValue, DefaultValue) ->
case is_expandable(DefaultValue) of
true ->
expand_env_variable(DefaultValue,
Key, VarValue);
false -> VarValue
end
end,
dict:from_list(Vars),
dict:from_list(Defaults))).
%%
%% Given a list of {Key, Value} environment variables, where Key may be defined
%% multiple times, walk the list and expand each self-reference so that we
@ -324,6 +341,16 @@ expand_vars(Key, Value, Vars) ->
[], Vars).
%%
%% Given a string, determine if it is expandable
%%
is_expandable(InStr) ->
case re:run(InStr,"\\\$",[{capture,none}]) of
match -> true;
nomatch -> false
end.
%%
%% Given env. variable FOO we want to expand all references to
%% it in InStr. References can have two forms: $FOO and ${FOO}
@ -374,17 +401,20 @@ default_env() ->
{"ERLANG_ARCH", integer_to_list(8 * erlang:system_info(wordsize))},
{"ERLANG_TARGET", rebar_utils:get_arch()},
{"solaris.*-64$", "CFLAGS", "-D_REENTRANT -m64"}, % Solaris specific flags
{"solaris.*-64$", "CXXFLAGS", "-D_REENTRANT -m64"},
{"solaris.*-64$", "LDFLAGS", "-m64"},
%% Solaris specific flags
{"solaris.*-64$", "CFLAGS", "-D_REENTRANT -m64 $CFLAGS"},
{"solaris.*-64$", "CXXFLAGS", "-D_REENTRANT -m64 $CXXFLAGS"},
{"solaris.*-64$", "LDFLAGS", "-m64 $LDFLAGS"},
{"darwin9.*-64$", "CFLAGS", "-m64"}, % OS X Leopard flags for 64-bit
{"darwin9.*-64$", "CXXFLAGS", "-m64"},
{"darwin9.*-64$", "LDFLAGS", "-arch x86_64"},
%% OS X Leopard flags for 64-bit
{"darwin9.*-64$", "CFLAGS", "-m64 $CFLAGS"},
{"darwin9.*-64$", "CXXFLAGS", "-m64 $CXXFLAGS"},
{"darwin9.*-64$", "LDFLAGS", "-arch x86_64 $LDFLAGS"},
{"darwin10.*-32", "CFLAGS", "-m32"}, % OS X Snow Leopard flags for 32-bit
{"darwin10.*-32", "CXXFLAGS", "-m32"},
{"darwin10.*-32", "LDFLAGS", "-arch i386"}
%% OS X Snow Leopard flags for 32-bit
{"darwin10.*-32", "CFLAGS", "-m32 $CFLAGS"},
{"darwin10.*-32", "CXXFLAGS", "-m32 $CXXFLAGS"},
{"darwin10.*-32", "LDFLAGS", "-arch i386 $LDFLAGS"}
].