diff options
Diffstat (limited to 'config')
| -rw-r--r-- | config/ChangeLog | 5 | ||||
| -rw-r--r-- | config/override.m4 | 12 |
2 files changed, 17 insertions, 0 deletions
diff --git a/config/ChangeLog b/config/ChangeLog index d115579..bb77be0 100644 --- a/config/ChangeLog +++ b/config/ChangeLog @@ -1,3 +1,8 @@ +2016-01-18 Alan Modra <amodra@gmail.com> + + PR binutils/19481 + * override.m4 (AC_PROG_LEX): Define. + 2015-10-21 Maxim Ostapenko <m.ostapenko@partner.samsung.com> * bootstrap-asan.mk: Replace ASAN_OPTIONS=detect_leaks with 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]) + ]) |