From 7a159ff1e1e947f20a017bbc8e89c1701a9d7098 Mon Sep 17 00:00:00 2001 From: Jon Turney Date: Wed, 8 May 2019 17:22:56 +0100 Subject: Add add_languages(native:) v2: Retain not using logical-and, to avoid short-circuiting side-effects of add_languages() --- docs/markdown/snippets/native_compiler_not_required.md | 5 +++++ 1 file changed, 5 insertions(+) create mode 100644 docs/markdown/snippets/native_compiler_not_required.md (limited to 'docs/markdown/snippets') diff --git a/docs/markdown/snippets/native_compiler_not_required.md b/docs/markdown/snippets/native_compiler_not_required.md new file mode 100644 index 0000000..0847b2b --- /dev/null +++ b/docs/markdown/snippets/native_compiler_not_required.md @@ -0,0 +1,5 @@ +## Native (build machine) compilers not always required + +`add_languages()` gained a `native:` keyword, indicating if a native or cross +compiler is to be used. Currently, for backwards compatibility, if the keyword +is absent, that means both are used. -- cgit v1.1 From c5a32c2afe843798d714fc9087bf55ad996b4052 Mon Sep 17 00:00:00 2001 From: Jon Turney Date: Sat, 8 Feb 2020 18:33:49 +0000 Subject: Refine behaviour of add_languages() when native: is missing This improves the common case of a simple meson.build which doesn't contain any 'native: true' targets to not require a native compiler when cross-compiling, without needing any changes in the meson.build. v2: Do it the right way around! --- .../markdown/snippets/native_compiler_not_required.md | 19 +++++++++++++++++-- 1 file changed, 17 insertions(+), 2 deletions(-) (limited to 'docs/markdown/snippets') diff --git a/docs/markdown/snippets/native_compiler_not_required.md b/docs/markdown/snippets/native_compiler_not_required.md index 0847b2b..331b3c7 100644 --- a/docs/markdown/snippets/native_compiler_not_required.md +++ b/docs/markdown/snippets/native_compiler_not_required.md @@ -1,5 +1,20 @@ ## Native (build machine) compilers not always required `add_languages()` gained a `native:` keyword, indicating if a native or cross -compiler is to be used. Currently, for backwards compatibility, if the keyword -is absent, that means both are used. +compiler is to be used. + +For the benefit of existing simple build definitions which don't contain any +`native: true` targets, without breaking backwards compatibility for build +definitions which assume that the native compiler is available after +`add_languages()`, if the `native:` keyword is absent the languages may be used +for either the build or host machine, but are never required for the build +machine. + +This changes the behaviour of the following meson fragment (when cross-compiling +but a native compiler is not available) from reporting an error at +`add_language` to reporting an error at `executable`. + +``` +add_language('c') +executable('main', 'main.c', native: true) +``` -- cgit v1.1