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| author | Alan Modra <amodra@gmail.com> | 2016-01-18 16:06:49 +1030 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2016-01-18 22:17:57 +1030 |
| commit | 3d961d0d3a797b4d463024a11131e96c213dee27 (patch) | |
| tree | 0bf38009a6b32cba6004c18a6ce002821312b631 /config/override.m4 | |
| parent | eb0edac83f82516bbbd5a0412bbdf7fd27c687f2 (diff) | |
| download | gdb-3d961d0d3a797b4d463024a11131e96c213dee27.zip gdb-3d961d0d3a797b4d463024a11131e96c213dee27.tar.gz gdb-3d961d0d3a797b4d463024a11131e96c213dee27.tar.bz2 | |
Provide AC_PROG_LEX that copes with LEX=missing from top-level
config/
PR binutils/19481
* override.m4 (AC_PROG_LEX): Define.
binutils/
* configure: Regenerate.
gas/
* configure: Regenerate.
ld/
* configure: Regenerate.
Diffstat (limited to 'config/override.m4')
| -rw-r--r-- | config/override.m4 | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/config/override.m4 b/config/override.m4 index 52bd1c3..b5ce654 100644 --- a/config/override.m4 +++ b/config/override.m4 @@ -101,4 +101,16 @@ m4_define([_AC_CHECK_DECLS], ]) +dnl If flex/lex are not found, the top level configure sets LEX to +dnl "/path_to/missing flex". When AC_PROG_LEX tries to find the flex +dnl output file, it calls $LEX to do so, but the current lightweight +dnl "missing" won't create a file. This results in an error. +dnl Avoid calling the bulk of AC_PROG_LEX when $LEX is "missing". +AC_DEFUN_ONCE([AC_PROG_LEX], +[AC_CHECK_PROGS(LEX, flex lex, :) +case "$LEX" in + :|*"missing "*) ;; + *) _AC_PROG_LEX_YYTEXT_DECL ;; +esac]) + ]) |