From ffe08666ea9b365512310b3408a1397f87cb766c Mon Sep 17 00:00:00 2001
From: Enrique Fernandez <efcasado@gmail.com>
Date: Tue, 11 Nov 2014 09:27:44 +0100
Subject: Add support for excluding erl files

---
 README.md    | 5 +++++
 core/erlc.mk | 8 ++++++--
 erlang.mk    | 8 ++++++--
 3 files changed, 17 insertions(+), 4 deletions(-)

diff --git a/README.md b/README.md
index 9672670..1255c2d 100644
--- a/README.md
+++ b/README.md
@@ -215,6 +215,11 @@ variable. It takes the arguments that will then be passed to
 You can specify a list of modules to be compiled first using
 the `COMPILE_FIRST` variable.
 
+You can also use the `ERLC_EXCLUDE` variable to prevent some
+modules from being compiled by the core compiler. Note that
+`ERLC_EXCLUDE` is a list of module names (i.e., no file extension
+is required).
+
 If `{id, "git"},` is found in your project's `.app.src`, the
 extended output of `git describe ...` will replace it. This
 can be retrieved at runtime via `application:get_key/2`.
diff --git a/core/erlc.mk b/core/erlc.mk
index a7f73f8..c13c714 100644
--- a/core/erlc.mk
+++ b/core/erlc.mk
@@ -9,13 +9,16 @@ ERLC_OPTS ?= -Werror +debug_info +warn_export_all +warn_export_vars \
 	+warn_shadow_vars +warn_obsolete_guard # +bin_opt_info +warn_missing_spec
 COMPILE_FIRST ?=
 COMPILE_FIRST_PATHS = $(addprefix src/,$(addsuffix .erl,$(COMPILE_FIRST)))
+ERLC_EXCLUDE ?=
+ERLC_EXCLUDE_PATHS = $(addprefix src/,$(addsuffix .erl,$(ERLC_EXCLUDE)))
 
 # Verbosity.
 
 appsrc_verbose_0 = @echo " APP   " $(PROJECT).app.src;
 appsrc_verbose = $(appsrc_verbose_$(V))
 
-erlc_verbose_0 = @echo " ERLC  " $(filter %.erl %.core,$(?F));
+erlc_verbose_0 = @echo " ERLC  " $(filter-out $(patsubst %,%.erl,$(ERLC_EXCLUDE)),\
+	$(filter %.erl %.core,$(?F)));
 erlc_verbose = $(erlc_verbose_$(V))
 
 xyrl_verbose_0 = @echo " XYRL  " $(filter %.xrl %.yrl,$(?F));
@@ -38,7 +41,8 @@ app:: erlc-include ebin/$(PROJECT).app
 
 define compile_erl
 	$(erlc_verbose) erlc -v $(ERLC_OPTS) -o ebin/ \
-		-pa ebin/ -I include/ $(COMPILE_FIRST_PATHS) $(1)
+		-pa ebin/ -I include/ $(filter-out $(ERLC_EXCLUDE_PATHS),\
+		$(COMPILE_FIRST_PATHS) $(1))
 endef
 
 define compile_xyrl
diff --git a/erlang.mk b/erlang.mk
index fd7f0fd..b5a48da 100644
--- a/erlang.mk
+++ b/erlang.mk
@@ -198,13 +198,16 @@ ERLC_OPTS ?= -Werror +debug_info +warn_export_all +warn_export_vars \
 	+warn_shadow_vars +warn_obsolete_guard # +bin_opt_info +warn_missing_spec
 COMPILE_FIRST ?=
 COMPILE_FIRST_PATHS = $(addprefix src/,$(addsuffix .erl,$(COMPILE_FIRST)))
+ERLC_EXCLUDE ?=
+ERLC_EXCLUDE_PATHS = $(addprefix src/,$(addsuffix .erl,$(ERLC_EXCLUDE)))
 
 # Verbosity.
 
 appsrc_verbose_0 = @echo " APP   " $(PROJECT).app.src;
 appsrc_verbose = $(appsrc_verbose_$(V))
 
-erlc_verbose_0 = @echo " ERLC  " $(filter %.erl %.core,$(?F));
+erlc_verbose_0 = @echo " ERLC  " $(filter-out $(patsubst %,%.erl,$(ERLC_EXCLUDE)),\
+	$(filter %.erl %.core,$(?F)));
 erlc_verbose = $(erlc_verbose_$(V))
 
 xyrl_verbose_0 = @echo " XYRL  " $(filter %.xrl %.yrl,$(?F));
@@ -227,7 +230,8 @@ app:: erlc-include ebin/$(PROJECT).app
 
 define compile_erl
 	$(erlc_verbose) erlc -v $(ERLC_OPTS) -o ebin/ \
-		-pa ebin/ -I include/ $(COMPILE_FIRST_PATHS) $(1)
+		-pa ebin/ -I include/ $(filter-out $(ERLC_EXCLUDE_PATHS),\
+		$(COMPILE_FIRST_PATHS) $(1))
 endef
 
 define compile_xyrl
-- 
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