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| author | Yang Tse <yangsita@gmail.com> | 2007-03-07 01:13:03 +0000 |
|---|---|---|
| committer | Yang Tse <yangsita@gmail.com> | 2007-03-07 01:13:03 +0000 |
| commit | d31feb8ff9b905ddf7a73a966676ea4f9c197b02 (patch) | |
| tree | dca8e36256f81e921157b675e404ffabd4354b3d /README | |
| parent | 4c3568bfd644e977cc6d56be6af56a29bea0cf5b (diff) | |
Autoconf redefines the M4 builtin macro 'm4_undefine' in such a way that
it fails if the macro that is being undefined is not already defined. To
make this work under all cases and be sure that at a certain point some
specific macro isn't defined we must use the following style in configure:
m4_ifdef([macro], [m4_undefine([macro])])
Diffstat (limited to 'README')
0 files changed, 0 insertions, 0 deletions