[sw] Check C/C++ Compiler Versions in Meson
This change ensures that users do not try to compile the project with
older versions of Clang/GCC than the project officially supports.
The requirements are taken from the OpenTitan installation instructions.
Signed-off-by: Sam Elliott <selliott@lowrisc.org>
diff --git a/meson.build b/meson.build
index 53d70f5..8183a7c 100644
--- a/meson.build
+++ b/meson.build
@@ -19,6 +19,10 @@
],
)
+# We allow both GCC and Clang, but these minimum versions.
+required_gcc_version = '>=5'
+required_clang_version = '>=3.5'
+
ot_version = get_option('ot_version')
if ot_version == 'undef'
error('ot_version option not set. Please run meson with a valid OpenTitan version option.')
@@ -41,6 +45,29 @@
error('Coverage requires clang.')
endif
+# Check C/C++ compiler version numbers.
+c_compilers = {
+ 'C compiler for host': meson.get_compiler('c', native: true),
+ 'C compiler for device': meson.get_compiler('c', native: false),
+ 'C++ compiler for host': meson.get_compiler('cpp', native: true),
+}
+foreach kind, compiler : c_compilers
+ if compiler.get_id() == 'clang'
+ if not compiler.version().version_compare(required_clang_version)
+ error('@0@ version mismatch, @1@ required.'.format(kind, required_clang_version))
+ endif
+ elif compiler.get_id() == 'gcc'
+ if not compiler.version().version_compare(required_gcc_version)
+ error('@0@ version mismatch, @1@ required.'.format(kind, required_gcc_version))
+ endif
+ else
+ warning('Unsupported @0@: @1@'.format(kind, compiler.get_id()))
+ message('Please ensure this compiler satisfies the OpenTitan requirements in:')
+ message(' https://docs.opentitan.org/doc/ug/install_instructions/#system-requirements')
+ endif
+endforeach
+
+
# C compiler arguments to to catch common errors, used on all builds.
extra_warning_args = [
'-Wimplicit-fallthrough', # Error on implicit fallthrough
