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| author | Sam Ravnborg <sam@ravnborg.org> | 2007-05-28 22:26:55 +0200 |
|---|---|---|
| committer | Sam Ravnborg <sam@ravnborg.org> | 2007-07-16 21:15:48 +0200 |
| commit | 7015030faf4af623804d63b5345c45fa0cad8b74 (patch) | |
| tree | 60e63ba60b6e3137d4d3cf13b5c89bcca4cd2218 /Documentation/kbuild | |
| parent | f5e83fa4c07488406b4a4e0ab7c4efd8df9ad676 (diff) | |
| download | lwn-7015030faf4af623804d63b5345c45fa0cad8b74.tar.gz lwn-7015030faf4af623804d63b5345c45fa0cad8b74.zip | |
kbuild: document cc-fullversion
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Diffstat (limited to 'Documentation/kbuild')
| -rw-r--r-- | Documentation/kbuild/makefiles.txt | 14 |
1 files changed, 14 insertions, 0 deletions
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 |