Ada: Pass GNATMAKE_FOR_BUILD directly to sub-makes
Fixes the Ada toolchain's build system to correctly propagate the GNATMAKE_FOR_BUILD variable.
The Ada toolchain’s build system incorrectly handled the GNATMAKE_FOR_BUILD Makefile variable. Instead of passing it directly to sub-makes, it was exported for sub-configures, leading to incorrect build behavior. This change modifies the Makefiles to ensure GNATMAKE_FOR_BUILD is passed directly as intended, resolving build issues related to this variable.
In Details
The GNAT build system uses Makefiles to manage the compilation of Ada projects. The GNATMAKE_FOR_BUILD variable specifies the GNATmake executable to use during the build process, especially for cross-compilation. This commit adjusts Makefile.def, Makefile.tpl, and Makefile.in to ensure GNATMAKE_FOR_BUILD is passed directly to recursive make invocations (sub-makes) rather than being exported as an environment variable for configuration steps. This aligns with the intended mechanism for propagating build-time tools.
- GNATMAKE
- The build tool for Ada projects using the GNAT compiler. It automates the compilation and linking process.
- Makefile
- A file containing rules for the
makeutility, used to automate the build process of software projects. - sub-make
- A recursive invocation of the
makecommand from within anothermakeprocess, typically used for building subdirectories or components of a larger project.