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| author | Ralf Wildenhues <Ralf.Wildenhues@gmx.de> | 2011-03-05 07:33:13 +0000 |
|---|---|---|
| committer | Ralf Wildenhues <Ralf.Wildenhues@gmx.de> | 2011-03-05 07:33:13 +0000 |
| commit | 66e49b8532aee9ab83d8148cc2b086b3da4287b2 (patch) | |
| tree | 8c014c6d39504979200010406c1dea06e6e0d35c /config/override.m4 | |
| parent | e8dc396d7a3596f353c9688cba37e37b8acf6a4b (diff) | |
| download | cygnal-66e49b8532aee9ab83d8148cc2b086b3da4287b2.tar.gz cygnal-66e49b8532aee9ab83d8148cc2b086b3da4287b2.tar.bz2 cygnal-66e49b8532aee9ab83d8148cc2b086b3da4287b2.zip | |
Guard against M4 versions with a buggy strstr.
config/:
* override.m4: Error out if a buggy M4 was detected, to
avoid spurious diffs in generated files.
Diffstat (limited to 'config/override.m4')
| -rw-r--r-- | config/override.m4 | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/config/override.m4 b/config/override.m4 index fc2d5272d..52bd1c3d1 100644 --- a/config/override.m4 +++ b/config/override.m4 @@ -48,6 +48,12 @@ _GCC_AUTOCONF_VERSION_CHECK ]) +dnl Ensure we do not use a buggy M4. +m4_if(m4_index([..wi.d.], [.d.]), [-1], + [m4_fatal(m4_do([m4 with buggy strstr detected. Please install +GNU M4 1.4.16 or newer and set the M4 environment variable]))]) + + dnl Fix 2.64 cross compile detection for AVR and RTEMS dnl by not trying to compile fopen. m4_if(m4_defn([m4_PACKAGE_VERSION]), [2.64], |