Add PROJECT_ENV

Fix #587

4 files changed, 43 insertions, 4 deletions

diff --git a/core/core.mk b/core/core.mk
index 6af2db9..f4a8921 100644
--- a/core/core.mk
+++ b/core/core.mk
@@ -25,6 +25,7 @@ PROJECT := $(strip $(PROJECT))
 
 PROJECT_VERSION ?= rolling
 PROJECT_MOD ?= $(PROJECT)_app
+PROJECT_ENV ?= []
 
 # Verbosity.
 
diff --git a/core/erlc.mk b/core/erlc.mk
index 24b78d2..ed9aa88 100644
--- a/core/erlc.mk
+++ b/core/erlc.mk
@@ -67,7 +67,8 @@ define app_file
 	{id$(comma)$(space)"$(1)"}$(comma))
 	{modules, [$(call comma_list,$(2))]},
 	{registered, []},
-	{applications, [$(call comma_list,kernel stdlib $(OTP_DEPS) $(LOCAL_DEPS) $(DEPS))]}
+	{applications, [$(call comma_list,kernel stdlib $(OTP_DEPS) $(LOCAL_DEPS) $(DEPS))]},
+	{env, $(subst \,\\,$(PROJECT_ENV))}
 ]}.
 endef
 else
@@ -79,7 +80,8 @@ define app_file
 	{modules, [$(call comma_list,$(2))]},
 	{registered, [$(call comma_list,$(PROJECT)_sup $(PROJECT_REGISTERED))]},
 	{applications, [$(call comma_list,kernel stdlib $(OTP_DEPS) $(LOCAL_DEPS) $(DEPS))]},
-	{mod, {$(PROJECT_MOD), []}}
+	{mod, {$(PROJECT_MOD), []}},
+	{env, $(subst \,\\,$(PROJECT_ENV))}
 ]}.
 endef
 endif
@@ -241,7 +243,7 @@ ebin/$(PROJECT).app:: $(ERL_FILES) $(CORE_FILES) $(wildcard src/$(PROJECT).app.s
 	$(eval MODULES := $(patsubst %,'%',$(sort $(notdir $(basename \
 		$(filter-out $(ERLC_EXCLUDE_PATHS),$(ERL_FILES) $(CORE_FILES) $(BEAM_FILES)))))))
 ifeq ($(wildcard src/$(PROJECT).app.src),)
-	$(app_verbose) printf "$(subst $(newline),\n,$(subst ",\",$(call app_file,$(GITDESCRIBE),$(MODULES))))" \
+	$(app_verbose) printf '$(subst $(newline),\n,$(subst ','\'',$(call app_file,$(GITDESCRIBE),$(MODULES))))' \
 		> ebin/$(PROJECT).app
 else
 	$(verbose) if [ -z "$$(grep -e '^[^%]*{\s*modules\s*,' src/$(PROJECT).app.src)" ]; then \
diff --git a/doc/src/guide/app.asciidoc b/doc/src/guide/app.asciidoc
index eef5d45..ca0a993 100644
--- a/doc/src/guide/app.asciidoc
+++ b/doc/src/guide/app.asciidoc
@@ -130,6 +130,8 @@ your situation.
         The application callback module.
 `PROJECT_REGISTERED`::
 	List of the names of all registered processes.
+`PROJECT_ENV`::
+	Configuration parameters used by the application.
 `LOCAL_DEPS`::
 	List of Erlang/OTP applications this project depends on,
 	excluding `erts`, `kernel` and `stdlib`, or list of
diff --git a/test/core_app.mk b/test/core_app.mk
index 22424ee..e568947 100644
--- a/test/core_app.mk
+++ b/test/core_app.mk
@@ -1,6 +1,6 @@
 # Core: Building applications.
 
-CORE_APP_CASES = appsrc-change asn1 auto-git-id erlc-exclude erlc-opts erlc-opts-filter error generate-erl generate-erl-include generate-erl-prepend hrl hrl-recursive makefile-change mib no-app no-makedep project-mod pt pt-erlc-opts xrl xrl-include yrl yrl-header yrl-include
+CORE_APP_CASES = appsrc-change asn1 auto-git-id env erlc-exclude erlc-opts erlc-opts-filter error generate-erl generate-erl-include generate-erl-prepend hrl hrl-recursive makefile-change mib no-app no-makedep project-mod pt pt-erlc-opts xrl xrl-include yrl yrl-header yrl-include
 CORE_APP_TARGETS = $(addprefix core-app-,$(CORE_APP_CASES))
 
 .PHONY: core-app $(CORE_APP_TARGETS)
@@ -197,6 +197,40 @@ endif
 		true = ID =/= [], \
 		halt()"
 
+ifndef LEGACY
+core-app-env: build clean
+
+	$i "Bootstrap a new OTP library named $(APP)"
+	$t mkdir $(APP)/
+	$t cp ../erlang.mk $(APP)/
+	$t $(MAKE) -C $(APP) -f erlang.mk bootstrap-lib $v
+
+	$i "Define PROJECT_ENV"
+	$t echo "PROJECT_ENV = [{test_key, test_value}]" >> $(APP)/Makefile
+
+	$i "Build the application"
+	$t $(MAKE) -C $(APP) $v
+
+	$i "Check that the application was compiled correctly"
+	$t $(ERL) -pa $(APP)/ebin/ -eval " \
+		ok = application:load($(APP)), \
+		{ok, test_value} = application:get_env($(APP), test_key), \
+		halt()"
+
+	$i "Define PROJECT_ENV with escape in string, special char"
+	$t echo "PROJECT_ENV = [{test_atom, '\\\$$\$$test'}, {test_key, \"\\\"test_\\tvalue\\\"\"}]" >> $(APP)/Makefile
+
+	$i "Build the application"
+	$t $(MAKE) -C $(APP) $v
+
+	$i "Check that the application was compiled correctly"
+	$t $(ERL) -pa $(APP)/ebin/ -eval " \
+		ok = application:load($(APP)), \
+		{ok, \"\\\"test_\\tvalue\\\"\"} = application:get_env($(APP), test_key), \
+		{ok, '\\\$$test'} = application:get_env($(APP), test_atom), \
+		halt()"
+endif
+
 core-app-erlc-exclude: build clean
 
 	$i "Bootstrap a new OTP library named $(APP)"