如题，前几天还是好的，今天就不行了
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libtool: link: /usr/bin/gcc -shared -fPIC -DPIC .libs/libmain.o .libs/libyywrap.o -L/home/paulwu/buildroot-2017.08/output/host/lib -lm -O2 -Wl,-rpath -Wl,/home/paulwu/buildroot-2017.08/output/host/lib -Wl,-soname -Wl,libfl.so.2 -o .libs/libfl.so.2.0.0
libtool: link: (cd ".libs" && rm -f "libfl.so.2" && ln -s "libfl.so.2.0.0" "libfl.so.2")
libtool: link: (cd ".libs" && rm -f "libfl.so" && ln -s "libfl.so.2.0.0" "libfl.so")
/bin/bash ../libtool --tag=CC --mode=link /usr/bin/gcc -O2 -I/home/paulwu/buildroot-2017.08/output/host/include -L/home/paulwu/buildroot-2017.08/output/host/lib -Wl,-rpath,/home/paulwu/buildroot-2017.08/output/host/lib -o stage1flex stage1flex-scan.o stage1flex-buf.o stage1flex-ccl.o stage1flex-dfa.o stage1flex-ecs.o stage1flex-filter.o stage1flex-gen.o stage1flex-main.o stage1flex-misc.o stage1flex-nfa.o stage1flex-options.o stage1flex-parse.o stage1flex-regex.o stage1flex-scanflags.o stage1flex-scanopt.o stage1flex-skel.o stage1flex-sym.o stage1flex-tables.o stage1flex-tables_shared.o stage1flex-tblcmp.o stage1flex-yylex.o -lm
libtool: link: ( cd ".libs" && rm -f "libfl.la" && ln -s "../libfl.la" "libfl.la" )
libtool: link: /usr/bin/gcc -O2 -I/home/paulwu/buildroot-2017.08/output/host/include -Wl,-rpath -Wl,/home/paulwu/buildroot-2017.08/output/host/lib -o stage1flex stage1flex-scan.o stage1flex-buf.o stage1flex-ccl.o stage1flex-dfa.o stage1flex-ecs.o stage1flex-filter.o stage1flex-gen.o stage1flex-main.o stage1flex-misc.o stage1flex-nfa.o stage1flex-options.o stage1flex-parse.o stage1flex-regex.o stage1flex-scanflags.o stage1flex-scanopt.o stage1flex-skel.o stage1flex-sym.o stage1flex-tables.o stage1flex-tables_shared.o stage1flex-tblcmp.o stage1flex-yylex.o -L/home/paulwu/buildroot-2017.08/output/host/lib -lm
./stage1flex -o stage1scan.c ./scan.l
Makefile:1696: recipe for target 'stage1scan.c' failed
make[3]: *** [stage1scan.c] 段错误 (core dumped)
make[3]: 离开目录“/home/paulwu/buildroot-2017.08/output/build/host-flex-2.6.4/src”
Makefile:546: recipe for target 'all' failed
make[2]: *** [all] Error 2
make[2]: 离开目录“/home/paulwu/buildroot-2017.08/output/build/host-flex-2.6.4/src”
Makefile:532: recipe for target 'all-recursive' failed
make[1]: *** [all-recursive] Error 1
make[1]: 离开目录“/home/paulwu/buildroot-2017.08/output/build/host-flex-2.6.4”
package/pkg-generic.mk:227: recipe for target '/home/paulwu/buildroot-2017.08/output/build/host-flex-2.6.4/.stamp_built' failed
make: *** [/home/paulwu/buildroot-2017.08/output/build/host-flex-2.6.4/.stamp_built] Error 2
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显示已经是最新版本
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remove后，还是一样
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make clean，试了N次，一样的结果
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7.4
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现在用回buildroot的toolchain，把gcc调到6.x，正在编译
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嗯，也测试了按commit修改，还是不行
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修改两个文件，编译过了。遇到有朋友可以借鉴一吓
1.修改Buildroot-2017.08/output/build/host-flex-2.6.4/configure.ac
AC_INIT([the fast lexical analyser generator],[2.6.4],[flex-help@lists.sourceforge.net],[flex])
AC_PREREQ([2.60])
AC_CONFIG_SRCDIR([src/scan.l])
AC_CONFIG_AUX_DIR([build-aux])
AC_USE_SYSTEM_EXTENSIONS
LT_INIT
AM_INIT_AUTOMAKE([1.11.3 -Wno-portability foreign check-news std-options dist-lzip parallel-tests subdir-objects])
AC_CONFIG_HEADER([src/config.h])
2.修改Buildroot-2017.08/output/build/host-flex-2.6.4/src/scan.l
/* scan.l - scanner for flex input -*-C-*- */
%top{
/* flexdef.h includes config.h, which may contain macros that alter the API */
/* of libc functions. Must include first before any libc header. */
#include "flexdef.h"
}
%{
/* Copyright (c) 1990 The Regents of the University of California. */
/* All rights reserved. */
@@ -32,7 +38,6 @@
/* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR */
/* PURPOSE. */
#include "flexdef.h"
#include "parse.h"
extern bool tablesverify, tablesext;
extern int trlcontxt; /* Set in parse.y for each rule. */
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修改后再不行，请sudo apt-get install help2man
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