configure: check if lex requires/fails with -o for output

[fio.git] / Makefile

diff --git a/Makefile b/Makefile
index 510e2570bd84dad22368be085d69df30ee16a440..1b5c9a6f35892d3e15b259a0dafde6df2a2cfc6c 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -297,7 +297,11 @@ override CFLAGS += -DFIO_VERSION='"$(FIO_VERSION)"'
 
 ifdef CONFIG_ARITHMETIC
 lex.yy.c: exp/expression-parser.l
+ifdef CONFIG_LEX_USE_O
        $(QUIET_LEX)$(LEX) -o $@ $<
+else
+       $(QUIET_LEX)$(LEX) $<
+endif
 
 lex.yy.o: lex.yy.c y.tab.h
        $(QUIET_CC)$(CC) -o $@ $(CFLAGS) $(CPPFLAGS) -c $<