FS#1003 - Flex does not build with GCC 7.2 #5960
Comments
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simontretter: Same issue here. Can't build the toolchain on Arch with gcc 7.2.0 due to this flex bug. |
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fseek: The commit [[https://github.com/westes/flex/commit/24fd0551333e7eded87b64dd36062da3df2f6380|24fd055]] is also necessary to fix the segfault. Here is the patch I'm successfully using at the moment (place it in tools/flex/patches) |
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most: Great, applied the patch (110-gcc720-segfault.patch) and now it builds. |
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wongsyrone: Please check these two commits: westes/flex@2b290d8 The fixes will be in 2.6.5 |
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airend: On my Arch system, westes/flex@24fd055 is sufficient to address the segfault. |
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MartB: This is still an ongoing issue with the GCC 7.2.0 (ArchLinux) and as Andrei pointed out that little patch fixes it. For now i would suggest adding this patch to the repository and later move to 2.6.5 as soon as its released. |
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bjonglez: This has already been fixed: https://git.lede-project.org/0fb14a2b1ab2f82ce63f4437b062229d73d90516 |
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MartB: Dang should have pulled i was not paying attention to the commits today. Thanks for pointing that out. |
most:
Get segmentation fault when compiling flex. Seems to be connected to gcc version 7.2 and issue identified upstream [[https://github.com/westes/flex/issues/247|"247]] with whis fix [[https://github.com/westes/flex/commit/4b5111d9772b5c160340ca96f08d30d7f6db5cda|Commit]].
Tried to apply this fix with own patch, but that did not improve the situation.
LEDE version: r4798-5629904ea8
gcc version 7.2.0 (Ubuntu 7.2.0-4ubuntu1)
OpenWrt-libtool: link: gcc -O2 -I/network/lede/source/staging_dir/host/include -I/network/lede/source/staging_dir/host/usr/include -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/network/lede/source/staging_dir/host/lib -L/network/lede/source/staging_dir/host/usr/lib -lm ./stage1flex -o stage1scan.c ./scan.l Makefile:1689: recipe for target 'stage1scan.c' failed make[6]: *** [stage1scan.c] Segmentation fault (core dumped) make[6]: Leaving directory '/network/lede/source/build_dir/host/flex-2.6.4/src' Makefile:539: recipe for target 'all' failed make[5]: *** [all] Error 2 make[5]: Leaving directory '/network/lede/source/build_dir/host/flex-2.6.4/src' Makefile:525: recipe for target 'all-recursive' failed make[4]: *** [all-recursive] Error 1 make[4]: Leaving directory '/network/lede/source/build_dir/host/flex-2.6.4' Makefile:28: recipe for target '/network/lede/source/build_dir/host/flex-2.6.4/.built' failed make[3]: *** [/network/lede/source/build_dir/host/flex-2.6.4/.built] Error 2The text was updated successfully, but these errors were encountered: