diff options
Diffstat (limited to 'Makefile')
| -rw-r--r-- | Makefile | 29 |
1 files changed, 25 insertions, 4 deletions
@@ -36,6 +36,27 @@ generated_files: programs/generated_files generated_files: tests/generated_files generated_files: visualc_files +# Set GEN_FILES to the empty string to disable dependencies on generated +# source files. Then `make generated_files` will only build files that +# are missing, it will not rebuilt files that are present but out of date. +# This is useful, for example, if you have a source tree where +# `make generated_files` has already run and file timestamps reflect the +# time the files were copied or extracted, and you are now in an environment +# that lacks some of the necessary tools to re-generate the files. +# If $(GEN_FILES) is non-empty, the generated source files' dependencies +# are treated ordinarily, based on file timestamps. +GEN_FILES ?= yes + +# In dependencies where the target is a configuration-independent generated +# file, use `TARGET: $(gen_file_dep) DEPENDENCY1 DEPENDENCY2 ...` +# rather than directly `TARGET: DEPENDENCY1 DEPENDENCY2 ...`. This +# enables the re-generation to be turned off when GEN_FILES is disabled. +ifdef GEN_FILES +gen_file_dep = +else +gen_file_dep = | +endif + .PHONY: visualc_files VISUALC_FILES = visualc/VS2013/mbedTLS.sln visualc/VS2013/mbedTLS.vcxproj # TODO: $(app).vcxproj for each $(app) in programs/ @@ -45,10 +66,10 @@ visualc_files: $(VISUALC_FILES) # present before it runs. It doesn't matter if the files aren't up-to-date, # they just need to be present. $(VISUALC_FILES): | library/generated_files -$(VISUALC_FILES): scripts/generate_visualc_files.pl -$(VISUALC_FILES): scripts/data_files/vs2013-app-template.vcxproj -$(VISUALC_FILES): scripts/data_files/vs2013-main-template.vcxproj -$(VISUALC_FILES): scripts/data_files/vs2013-sln-template.sln +$(VISUALC_FILES): $(gen_file_dep) scripts/generate_visualc_files.pl +$(VISUALC_FILES): $(gen_file_dep) scripts/data_files/vs2013-app-template.vcxproj +$(VISUALC_FILES): $(gen_file_dep) scripts/data_files/vs2013-main-template.vcxproj +$(VISUALC_FILES): $(gen_file_dep) scripts/data_files/vs2013-sln-template.sln # TODO: also the list of .c and .h source files, but not their content $(VISUALC_FILES): echo " Gen $@ ..." |