Akim Demaille
355e5a7255
build: AC_PROG_LEX: use more readable variable names.
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* m4/flex.m4 (AC_PROG_LEX): Prefer LEX_IS_FLEX to FLEX.
Prefer true/false to yes/no for such variables.
* configure.ac: Adjust.
2012-05-06 10:08:18 +02:00
Akim Demaille
0d49053a75
build: flex.m4: check for Flex.
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* m4/flex.m4 (_AC_PROG_LEX_YYTEXT_DECL): Check that $LEX
supports some of the Flex options, and exclusive start conditions.
Define FLEX to 'yes'/'', as AC_PROG_CC does for GCC.
2012-04-10 21:37:06 +02:00
Akim Demaille
a4e4295ad2
build: flex.m4: quote properly.
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* m4/flex.m4: Use quotes more systematically.
2012-04-10 21:37:02 +02:00
Akim Demaille
22cd137bc9
build: flex.m4.
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* m4/flex.m4: New.
An exact copy of what is in Autoconf currently.
2012-04-10 21:36:59 +02:00