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Currently, the target and host flex packages do not behave the same in
terms of patching: the target variant has a patch hook that disables
building the programs (because they are not needed, and do not build
on no-MMU platforms). However, this hook is obviously not executed for
host-flex, because we really want the host flex binary to be built.
In preparation for the introduction of out-of-tree package build, it
is important that we don't do different things in the patch hooks for
the target and host variant of a given package, because the source
tree will be shared between the target and host builds.
To solve this, we introduce a --disable-program configure option,
through a patch to the flex configure.ac and Makefile.am. This patch
makes the current 0001-flex-disable-documentation.patch no longer
needed.
Furthermore, building the documentation is a PITA: flex.1 depends on
configure.ac and a few other files generated during the build. Touching
flex.1 does not work, because automake will forcibly remove the files
when its prerequisites are too old, so pre-requisites of flex.1 will
always be more recent than flex.1. So, we add a patch that adds a
--disable-doc configure option.
Fixes:
http://autobuild.buildroot.org/results/f70/f70b39632535bb9692d0a032166b2f4104532967/
http://autobuild.buildroot.org/results/525/52567afdfe7992b3518de0e01227ba14aa300f21/
[...]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
[yann.morin.1998@free.fr:
- rebase on-top of master,
- add patch to not build the documentation, because simply touching
flex.1 is no longer enough.
- keep install in target/, for shared builds
]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Adrian Perez de Castro <aperez@igalia.com>
Cc: Arnout Vandecappelle <arnout@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
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When the host uses glibc 2.26 or newer, Flex will try to use the
newly-introduced reallocarray() function, but as it would not define
_GNU_SOURCE a segmentation fault would occur later on due to the
compiler assumming that the function is implicitly defined.
This issue manifests itself due to a crash of "stage1flex" during the
Flex bootstrap:
./stage1flex -o stage1scan.c ./scan.l
make[2]: *** [Makefile:1725: stage1scan.c] Segmentation fault (core dumped)
This imports the patch from the upstream Git repository, and adds flags
in the .mk file to rebuild the Autotools scripts and support files. Due
to the latter, the patch to disable the documentation is changed so it
modifies the .am file instead.
Signed-off-by: Adrian Perez de Castro <aperez@igalia.com>
[Arnout:
- Add Adrian's Sob and upstream ref to new patch;
- Keep patch 1 as patch 1;
- Keep Vicente as author of path 1;
- Add reason for autoreconf in a comment.]
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
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