Change Details

This diff changes the way the native builds are handled during the cmake build. The current behavior re-runs the top level cmake list file in the context of a native build. This causes the build to require all the node software dependencies in order to build simple generation tools with little to no dependency. It also causes the build to fail when trying to build from the depends on platforms that don't satisfy the dependency requirements. The approach from this diff is to create a new project list file for each native executable, so the scope is restricted to the absolute minimum. Most of the logic from the current version is maintained in order to rebuild the native targets as needed thanks to the depfiles. Some key advantages: 1/ During crosscompilation it is no longer necessary to satisfy the dependencies on the host platform; 2/ It is no longer necessary to forward cmake arguments from the main build to the native build; 3/ As a consequence to 2, there is no need to postpone the generation to the end of the cmake lists parsing; 4/ Faster first build (half the cmake configuration time) 5/ Less code to maintain. Out of scope for this diff: - The gen_context.c file deserves to be in the gen/ directory. This also impacts the autotools build, so it will be done in a follow-up. - The Gitian builds can be cleaned from the host dependencies.

This diff changes the way the native builds are handled during the cmake build. The current behavior re-runs the top level cmake list file in the context of a native build. This causes the build to require all the node software dependencies in order to build simple generation tools with little to no dependency. It also causes the build to fail when trying to build from the depends on platforms that don't satisfy the dependency requirements. The approach from this diff is to create a new project list file for each native executable, so the scope is restricted to the absolute minimum. Most of the logic from the current version is maintained in order to rebuild the native targets as needed thanks to the depfiles. Some key advantages: 1/ During crosscompilation it is no longer necessary to satisfy the dependencies on the host platform; 2/ It is no longer necessary to forward cmake arguments from the main build to the native build; 3/ As a consequence to 2, there is no need to postpone the generation to the end of the cmake lists parsing; 4/ Faster first build (half the cmake configuration time) 5/ Less code to maintain. Out of scope for this diff: - The gen_context.c file deserves to be in the gen/ directory. This also impacts the autotools build, so it will be done in a follow-up. - The Gitian builds can be cleaned from the host dependencies.

This diff changes the way the native builds are handled during the cmake build. The current behavior re-runs the top level cmake list file in the context of a native build. This causes the build to require all the node software dependencies in order to build simple generation tools with little to no dependency. It also causes the build to fail when trying to build from the depends on platforms that don't satisfy the dependency requirements. The approach from this diff is to create a new project list file for each native executable, so the scope is restricted to the absolute minimum. Most of the logic from the current version is maintained in order to rebuild the native targets as needed thanks to the depfiles. Some key advantages: 1/ During crosscompilation it is no longer necessary to satisfy the the dependencies on the host platform; 2/ It is no longer necessary to forward cmake arguments from the main build to the native build; 3/ As a consequence to 2, there is no need to postpone the generation to the end of the cmake lists parsing; 4/ Faster first build (half the cmake configuration time) 5/ Less code to maintain. Out of scope for this diff: - The gen_context.c file deserves to be in the gen/ directory. This also impacts the autotools build, so it will be done in a follow-up. - The Gitian builds can be cleaned from the host dependencies.