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Provide AC_PROG_LEX that copes with LEX=missing from top-level

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config/
	PR binutils/19481
	* override.m4 (AC_PROG_LEX): Define.
binutils/
	* configure: Regenerate.
gas/
	* configure: Regenerate.
ld/
	* configure: Regenerate.
This commit is contained in:
Alan Modra
2016-01-18 16:06:49 +10:30
parent eb0edac83f
commit 3d961d0d3a
8 changed files with 44 additions and 12 deletions
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5
config/ChangeLog
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@@ -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

12
config/override.m4
View File

@@ -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])
])