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| author | Michael Olbrich <m.olbrich@pengutronix.de> | 2021-05-21 09:21:57 +0200 |
|---|---|---|
| committer | Michael Olbrich <m.olbrich@pengutronix.de> | 2021-05-21 09:22:48 +0200 |
| commit | 146417b9204c3fb0e0ba64a27affad52b491a82d (patch) | |
| tree | 07baf604f437f8458c0f1151512a2292a825a933 /doc | |
| parent | a3236ba179741eaa4d33e712d4850e7e4af58c24 (diff) | |
| download | ptxdist-146417b9204c3fb0e0ba64a27affad52b491a82d.tar.gz ptxdist-146417b9204c3fb0e0ba64a27affad52b491a82d.tar.xz | |
wrapper: add package variable to blacklist compiler flags
Another option to prevent unwanted implicit dependencies.
Signed-off-by: Michael Olbrich <m.olbrich@pengutronix.de>
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/ref_make_variables.rst | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/doc/ref_make_variables.rst b/doc/ref_make_variables.rst index b770b1b49..674acdcea 100644 --- a/doc/ref_make_variables.rst +++ b/doc/ref_make_variables.rst @@ -308,6 +308,14 @@ Build Environment for all Stages flags. Adding them via environment variables or ``make`` arguments can have unexpected side effects, such as as overwriting existing defaults. +``<PKG>_FLAGS_BLACKLIST`` + A list of arbitrary flags. If any one of these flags is found as an + argument to the compiler, preprocessor or linker then the call will fail. + This is useful to prevent implicit dependencies: Many packages try to + link to libraries at configure time and use them if it works. Adding + '-l<lib>' to the blacklist makes it possible to prevent such a detection + and explicitly avoid the dependency. + ``<PKG>_WRAPPER_BLACKLIST`` PTXdist has several options in the platformconfig that inject options in the compiler command line. This is used, for example, to add hardening |