[Buildroot] [PATCH] pv: fix build failures when building under a path containing 'yes'

[Yann E. MORIN <yann.morin.1998@free.fr>]

Peter, All,

On 2018-08-20 16:22 +0200, Peter Korsgaard spake thusly:
> Depending on the configuration, the cpp output may contain the string 'yes'
> in a comment if built under a path containing 'yes', confusing the _AIX
> test:
[--SNIP--]
> Fix it by only matching on 'yes' on a line by itself.
> 
> As pv doesn't cleanly autoreconf (it doesn't use automake and configure.in
> is located in subdir), instead directly patch configure.
> 
> Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>

A similar issue was reported recently on IRC, when the build directory
$(O) contains an '@', which makes some package (gcc, IIRC?) fail to
build.

I'll run a test here to find exactly what package fails, and I'll submit
a patch refusing '@' in the build directory path.

Regards,
Yann E. MORIN.

> ---
>  .../pv/0001-configure.in-tighten-AIX-test.patch    | 57 ++++++++++++++++++++++
>  1 file changed, 57 insertions(+)
>  create mode 100644 package/pv/0001-configure.in-tighten-AIX-test.patch
> 
> diff --git a/package/pv/0001-configure.in-tighten-AIX-test.patch b/package/pv/0001-configure.in-tighten-AIX-test.patch
> new file mode 100644
> index 0000000000..2e0d2af247
> --- /dev/null
> +++ b/package/pv/0001-configure.in-tighten-AIX-test.patch
> @@ -0,0 +1,57 @@
> +From cd7605723eb8e6d8231644f1cf62f1e80badf074 Mon Sep 17 00:00:00 2001
> +From: Peter Korsgaard <peter@korsgaard.com>
> +Date: Mon, 20 Aug 2018 15:57:22 +0200
> +Subject: [PATCH] configure.in: tighten AIX test
> +
> +Depending on the configuration, the cpp output may contain the string 'yes'
> +in a comment if built under a path containing 'yes', confusing the _AIX
> +test:
> +
> +${CROSS}-cpp conftest.h
> +\# 1 "conftest.h"
> +\# 1 "<built-in>"
> +\# 1 "<command-line>"
> +\# 31 "<command-line>"
> +\# 1 "/home/peko/source/buildroot/output-yes/host/x86_64-buildroot-linux-gnu/sysroot/usr/include/stdc-predef.h" 1 3 4
> +\# 32 "<command-line>" 2
> +\# 1 "conftest.txt"
> +
> +Fix it by only matching on 'yes' on a line by itself.
> +
> +Upstream-status: submitted to author
> +Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
> +---
> +
> + autoconf/configure.in | 2 +-
> + configure             | 2 +-
> + 2 files changed, 2 insertions(+), 2 deletions(-)
> +
> +diff --git a/autoconf/configure.in b/autoconf/configure.in
> +index bd45004..487c42b 100644
> +--- a/autoconf/configure.in
> ++++ b/autoconf/configure.in
> +@@ -86,7 +86,7 @@ AC_PROG_MAKE_SET
> + 
> + dnl AIX needs -lc128
> + dnl
> +-AC_EGREP_CPP([yes], [#ifdef _AIX
> ++AC_EGREP_CPP([^yes$], [#ifdef _AIX
> + yes
> + #endif
> + ], [LIBS="$LIBS -lc128"])
> +diff --git a/configure b/configure
> +index 7c11be0..59267b9 100755
> +--- a/configure
> ++++ b/configure
> +@@ -3377,7 +3377,7 @@ yes
> + 
> + _ACEOF
> + if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
> +-  $EGREP "yes" >/dev/null 2>&1; then
> ++  $EGREP "^yes$" >/dev/null 2>&1; then
> +   LIBS="$LIBS -lc128"
> + fi
> + rm -f conftest*
> +-- 
> +2.11.0
> +
> -- 
> 2.11.0
> 
> _______________________________________________
> buildroot mailing list
> buildroot at busybox.net
> http://lists.busybox.net/mailman/listinfo/buildroot

-- 
.-----------------.--------------------.------------------.--------------------.
|  Yann E. MORIN  | Real-Time Embedded | /"\ ASCII RIBBON | Erics' conspiracy: |
| +33 662 376 056 | Software  Designer | \ / CAMPAIGN     |  ___               |
| +33 223 225 172 `------------.-------:  X  AGAINST      |  \e/  There is no  |
| http://ymorin.is-a-geek.org/ | _/*\_ | / \ HTML MAIL    |   v   conspiracy.  |
'------------------------------^-------^------------------^--------------------'