From 7015030faf4af623804d63b5345c45fa0cad8b74 Mon Sep 17 00:00:00 2001 From: Sam Ravnborg Date: Mon, 28 May 2007 22:26:55 +0200 Subject: [PATCH] kbuild: document cc-fullversion Signed-off-by: Sam Ravnborg --- Documentation/kbuild/makefiles.txt | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/Documentation/kbuild/makefiles.txt b/Documentation/kbuild/makefiles.txt index bb5306e9a5c3..e08ef8759a07 100644 --- a/Documentation/kbuild/makefiles.txt +++ b/Documentation/kbuild/makefiles.txt @@ -501,6 +501,20 @@ more details, with real examples. The third parameter may be a text as in this example, but it may also be an expanded variable or a macro. + cc-fullversion + cc-fullversion is useful when the exact version of gcc is needed. + One typical use-case is when a specific GCC version is broken. + cc-fullversion points out a more specific version than cc-version does. + + Example: + #arch/powerpc/Makefile + $(Q)if test "$(call cc-fullversion)" = "040200" ; then \ + echo -n '*** GCC-4.2.0 cannot compile the 64-bit powerpc ' ; \ + false ; \ + fi + + In this example for a specific GCC version the build will error out explaining + to the user why it stops. === 4 Host Program support -- 2.20.1