[Buildroot] unsafe header/library path used in cross-compilation: '-I/usr/include/readline'

Sjoerd Venema srg.venema at gmail.com
Tue Feb 27 17:56:57 UTC 2018


Thanks! That fixed it.
Compilation now succeeds!

Only one problem seems to remain. During the installation phase I get this
error at the end (full output of install stage:
https://pastebin.com/ca6FJebB):

ecasound: installs files in
/home/buildroot/buildroot-2018.02-rc2/output/target//home/buildroot/buildroot-2018.02-rc2/output
make[1]: ***
[/home/buildroot/buildroot-2018.02-rc2/output/build/ecasound-2.9.1/.stamp_target_installed]
Error 1
make: *** [_all] Error 2

Everything seems to have nicely been installed into each directory.
I noticed there's a double forward slash in the directory name, could that
be the culprit?

By the way, the working patch looks like this now:

diff --git a/ecasound/Makefile.am b/ecasound/Makefile.am
index 7346a51d5b94..1223f346aff7 100644
--- a/ecasound/Makefile.am
+++ b/ecasound/Makefile.am
@@ -1,4 +1,4 @@
-INCLUDES = -I$(ECA_S_READLINE_INCLUDES) -I$(srcdir) -I$(top_srcdir)
-I$(top_srcdir)/libecasound -I$(top_srcdir)/kvutils
+INCLUDES = -I=/usr/include/readline -I$(srcdir) -I$(top_srcdir)
-I$(top_srcdir)/libecasound -I$(top_srcdir)/kvutils

 if ECA_AM_USE_NCURSES
 termcap_library_ncurses = -lncurses

Assuming we manage to fix this, should I upload this package for inclusion
into Buildroot somewhere?
Or, how does that work? What's the etiquette, convention, etc.?

rgds,
Sjoerd Venema


On 27 February 2018 at 12:54, Peter Seiderer <ps.report at gmx.net> wrote:

> Hello Sjoerd,
>
> On Mon, 26 Feb 2018 18:51:30 +0100, Sjoerd Venema <srg.venema at gmail.com>
> wrote:
>
> > Hi Baruch,
> >
> > Still fails on the readline.h
> >
> > Full output:
> > https://pastebin.com/1eM3dZBiusr/include/readline
> >
> > I'm starting to think that there's a problem with the installation of
> > readline perhaps?
>
> No, a problem with the suggested patch, try the following:
>
> diff --git a/package/ecasound/0001-makefile.am-unsafereadine.patch
> b/package/ecasound/0001-makefile.am-unsafereadine.patch
> index a7eb1c3824..87a8eb078e 100644
> --- a/package/ecasound/0001-makefile.am-unsafereadine.patch
> +++ b/package/ecasound/0001-makefile.am-unsafereadine.patch
> @@ -2,7 +2,7 @@
>  +++ ecasound-2.9.1/ecasound/Makefile.am        2018-02-27
> 12:49:04.641658026 +0100
>  @@ -1,4 +1,4 @@
>  -INCLUDES = -I$(ECA_S_READLINE_INCLUDES) -I$(srcdir) -I$(top_srcdir)
> -I$(top_srcdir)/libecasound -I$(top_srcdir)/kvutils
> -+INCLUDES = -I=/readline -I$(srcdir) -I$(top_srcdir)
> -I$(top_srcdir)/libecasound -I$(top_srcdir)/kvutils
> ++INCLUDES = -I=/usr/include/readline -I$(srcdir) -I$(top_srcdir)
> -I$(top_srcdir)/libecasound -I$(top_srcdir)/kvutils
>
>   if ECA_AM_USE_NCURSES
>   termcap_library_ncurses = -lncurses
> diff --git a/package/ecasound/Config.in b/package/ecasound/Config.in
> index b443127bf8..15338b13aa 100644
> --- a/package/ecasound/Config.in
> +++ b/package/ecasound/Config.in
> @@ -1,5 +1,6 @@
>  config BR2_PACKAGE_ECASOUND
>         bool "ecasound"
> +       select BR2_PACKAGE_READLINE
>         help
>           Ecasound is a software package designed for
>           multitrack audio processing.
> diff --git a/package/ecasound/ecasound.mk b/package/ecasound/ecasound.mk
> index 657248e78b..f48ed4168c 100644
> --- a/package/ecasound/ecasound.mk
> +++ b/package/ecasound/ecasound.mk
> @@ -10,7 +10,7 @@ ECASOUND_SITE = http://ecasound.seul.org/download
>  ECASOUND_INSTALL_STAGING = NO
>  ECASOUND_INSTALL_TARGET = YES
>  #ECASOUND_CONF_OPTS =
> -ECASOUND_DEPENDENCIES = readline
> +ECASOUND_DEPENDENCIES = host-pkgconf readline
>  ECASOUND_AUTORECONF = YES
>
>  $(eval $(autotools-package))
>
>
> Regards,
> Peter
>
> >
> > kind regards,
> > Sjoerd
> >
> > On 26 February 2018 at 06:42, Baruch Siach <baruch at usr/include/
> readlinetkos.co.il> wrote:
> >
> > > Hi Sjoerd,
> > >
> > > On Sun, Feb 25, 2018 at 11:12:10AM +0100, Sjoerd Venema wrote:
> > > > Thanks for the patch, at this point, quick hacks are welcome ;-).
> > > > I'm new at Buildroot and (Cross-)Compilation. So, it's not always
> that
> > > > clear to me what errors mean exactly and how to deal with them.
> > > >
> > > > The patch, however, doesn't seem to work:
> > > >
> > > > On 25 February 2018 at 06:36, Baruch Siach <baruch at tkos.co.il>
> wrote:
> > > >
> > > > > Hi Sjoerd Venema,
> > > > >
> > > > > On Sun, Feb 25, 2018 at 01:03:03AM +0100, Sjoerd Venema wrote:
> > > > > > Ok, but package BR2_PACKAGE_READLINE is actually selected.
> Still, I
> > > get
> > > > > the
> > > > > > error.
> > > > > > I'm now running a make clean all, to be sure, but I don't think
> it
> > > > > resolves
> > > > > > the issue. This is my .mk file:
> > > > > >
> > > > > > ############################################################
> > > > > ####################
> > > > > > #
> > > > > > # ecasound
> > > > > > #
> > > > > > ############################################################
> > > > > ####################  usr/include/readline
> > > > > >
> > > > > > ECASOUND_VERSION = 2.9.1
> > > > > > ECASOUND_SOURCE = ecasound-$(ECASOUND_VERSION).tar.gz
> > > > > > ECASOUND_SITE = http://ecasound.seul.org/download
> > > > > > ECASOUND_INSTALL_STAGING = NO
> > > > > > ECASOUND_INSTALL_TARGET = YES
> > > > > > #ECASOUND_CONF_OPTS =
> > > > > > ECASOUND_DEPENDENCIES = readline
> > > > > >
> > > > > > $(eval $(autotools-package))
> > > > >
> > > > > Unfortunately the ecasound build systems is not cross compile
> > > friendly. It
> > > > > insists on looking for readline.h in the host include directory.
> The
> > > quick
> > > > > hack below might help. Make sure to add _AUTORECONF to regenerate
> the
> > > > > Makefile.
> > > >
> > > > Added.
> > > >
> > > > > This does not fix the cross compile issue completely, since
> ecasound
> > > still
> > > > > depends on readline headers being installed on your host, otherwise
> > > > > configure
> > > > > failes.
> > > > >
> > > > > diff --git a/ecasound/Makefile.am b/ecasound/Makefile.am
> > > > > index 9378d40ecb10..d2e58ab6e50c 100644
> > > > > --- a/ecasound/Makefile.amusr/include/readline
> > > > > +++ b/ecasound/Makefile.am
> > > > > @@ -1,4 +1,4 @@
> > > > > -AM_CPPFLAGS = -I$(ECA_S_READLINE_INCLUDES) -I$(srcdir)
> -I$(top_srcdir)
> > > > > -I$(top_srcdir)/libecasound -I$(top_srcdir)/kvutils
> > > > > +AM_CPPFLAGS = -I=/readline -I$(srcdir) -I$(top_srcdir)
> > > > > -I$(top_srcdir)/libecasound -I$(top_srcdir)/kvutils
> > > > >
> > > > >
> > > > This patch gives me an error:
> > > >
> > > > >>> ecasound 2.9.1 Patching
> > > >
> > > > Applying 0001-makefile.am-unsafereadline.patch using patch:
> > > > patching file ecasound/Makefile.am
> > > > Hunk #1 FAILED at 1.
> > > > 1 out of 1 hunk FAILED -- saving rejects to file
> ecasound/Makefile.am.rej
> > > > make[1]: ***
> > > > [/home/buildroot/buildroot-2018.02-rc2/output/build/
> > > ecasound-2.9.1/.stamp_patched]
> > > > Error 1
> > > > make: *** [_all] Error 2
> > > >
> > > > Can't find that .rej file. But upon closer inspection, there is no
> > > > AM_CPPFLAGS in Makefile.am.
> > > > There is one in the Makefile:
> > > >
> > > > AM_CPPFLAGS =  -D_REENTRANT -D_XOPEN_SOURCE=600
> > > >
> > > > I've tried appending the line from the patch, but no luck on that.
> > >
> > > That's because I generated the patch against the master branch. Here
> it is
> > > against v2.9.1:
> > >
> > > diff --git a/ecasound/Makefile.am b/ecasound/Makefile.am
> > > index 7346a51d5b94..1223f346aff7 100644
> > > --- a/ecasound/Makefile.am
> > > +++ b/ecasound/Makefile.am
> > > @@ -1,4 +1,4 @@
> > > -INCLUDES = -I$(ECA_S_READLINE_INCLUDES) -I$(srcdir) -I$(top_srcdir)
> > > -I$(top_srcdir)/libecasound -I$(top_srcdir)/kvutils
> > > +INCLUDES = -I=/readline -I$(srcdir) -I$(top_srcdir)
> > > -I$(top_srcdir)/libecasound -I$(top_srcdir)/kvutils
> > >
> > >  if ECA_AM_USE_NCURSES
> > >  termcap_library_ncurses = -lncurses
> > >
> > > > >  if ECA_AM_USE_NCURSES
> > > > >  termcap_library_ncurses = -lncurses
> > > >
> > > > Should this be part of the patch too?
> > >
> > > Yes. This is the patch hunk context. See
> > > https://en.wikipedia.org/wiki/Diff_utility#Unified_format.
> > >
> >
> > Thanks, that clarifies that.
> >
> >
> >
> > >
> > > > > > On 24 February 2018 at 22:25, Baruch Siach <baruchusr/include/
> readline at tkos.co.il>
> > > wrote:
> > > > > > > On Sat, Feb 24, 2018 at 10:12:19PM +0100, Sjoerd Venema wrote:
> > > > > > > > I'm getting an "unsafe header/library path used in
> > > > > > > cross-compilation"-error
> > > > > > > > while building ecasound (https://ecasound.seul.org/
> > > > > ecasound/download.php
> > > > > > > ).
> > > > > > > > From what I've read so far is that it's because the makefile
> > > > > references
> > > > > > > the
> > > > > > > > /usr/-directory. What I can't figure out is how to change the
> > > > > makefile to
> > > > > > > > not do that. Turning on/off the "paranoid"-function in
> menuconfig
> > > > > didn't
> > > > > > > > make a difference.
> > > > > > >
> > > > > > > There is no ecasound package in current Buildroot. Have you
> added
> > > this
> > > > > > > package
> > > > > > > locally?
> > > > > > >
> > > > > > > > [buildroot at br buildroot]$ make ecasound
> > > > > > > > >>> ecasound 2.9.1 Building
> > > > > > > > PATH="/home/buildroot/buildroot-2018.02-rc2/output/
> > > > > > > host/bin:/home/buildroot/buildroot-2018.02-rc2/output/
> > > > > > > host/sbin:/usr/local/bin:/usr/bin:/usr/local/sbin:/usr/sbin:
> > > > > > > /home/buildroot/.local/bin:/home/buildroot/bin"
> > > > > > > > /usr/bin/make -j5  -C
> > > > > > > > /home/buildroot/buildroot-2018.02-rc2/output/build/
> > > ecasound-2.9.1/
> > > > > > > > /usr/bin/make  all-recursive
> > > > > > > > Making all in kvutils
> > > > > > > > make[4]: Nothing to be done for `all'.
> > > > > > > > Making all in libecasound
> > > > > > > > Making all in plugins
> > > > > > > > make[5]: Nothing to be done for `all'.
> > > > > > > > make[5]: Nothing to be done for `all-am'.
> > > > > > > > Making all in ecasound
> > > > > > > > /home/buildroot/buildroot-2018.02-rc2/output/host/bin/
> > > > > > > arm-buildroot-linux-uclibcgnueabihf-g++
> > > > > > > > -DHAVE_CONFIG_H -I. -I. -I.. *-I/usr/include/readline* -I.
> -I..
> > > > > > > > -I../libecasound -I../kvutils -D_REENTRANT
> -D_XOPEN_SOURCE=600
> > > > > > > > -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
> -D_FILE_OFFSET_BITS=64
> > > > > > > > -ffast-math -fstrict-aliasing -DNDEBUG -DENABLE_DBC
> > > > > -D_LARGEFILE_SOURCE
> > > > > > > > -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os  -c -o
> > > eca-curses.o
> > > > > > > > eca-curses.cpp
> > > > > > > > arm-buildroot-linux-uclibcgnueabihf-g++: WARNING: unsafe
> > > > > header/library
> > > > > > > > path used in cross-compilation: '*-I/usr/include/readline*'
> > > > > > >
> > > > > > > This is just a warning, it doesn't break your build. But you
> should
> > > > > fix it.
> > > > > > >
> > > > > > > The BR2_COMPILER_PARANOID_UNSAFE_PATH option makes this a hard
> > > error.
> > > > > But
> > > > > > > the
> > > > > > > warning is shown anyway.
> > > > > > >
> > > > > > > > eca-curses.cpp:46:22: fatal error: readline.h: No such file
> or
> > > > > directory
> > > > > > > >  #include <readline.h>
> > > > > > > >                       ^
> > > > > > >
> > > > > > > This is your problem. Your package need readline. You need to
> > > select
> > > > > > > BR2_PACKAGE_READLINE, as well as add readline to your package
> > > > > dependencies.
> > > > > > >
> > > > > > > > compilation terminated.
> > > > > > > > make[4]: *** [eca-curses.o] Error 1
> > > > > > > > make[3]: *** [all-recursive] Error 1
> > > > > > > > make[2]: *** [all] Error 2
> > > > > > > > make[1]: ***
> > > > > > > > [/home/buildroot/buildroot-2018.02-rc2/output/build/
> > > > > > > ecasound-2.9.1/.stamp_built]
> > > > > > > > Error 2
> > > > > > > > make: *** [_all] Error 2
> > >
> > > --
> > >      http://baruch.siach.name/blog/                  ~. .~   Tk Open
> > > Systems
> > > =}------------------------------------------------ooO--U--
> > > Ooo------------{=
> > >    - baruch at tkos.co.il - tel: +972.2.679.5364, http://www.tkos.co.il -
> > >
>
>
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