[Buildroot] [PATCH 1/1] package/rhash: fix build failure due to gcc -v

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

Fabrice, All,

On 2020-12-03 21:28 +0100, Fabrice Fontaine spake thusly:
> Fixes:
>  - http://autobuild.buildroot.org/results/8605c16cc28316954ce8b9dcc266974390c5da20
> 
> Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>

Applied to master with the following changes:

  - retain "$CC -v" as default, fallback to "$CC --version", in the hope
    that it stands better chance with upstream
  - write a commit log to explain the actual root-cause of the build
    failure

Thanks!

Regards,
Yann E. MORIN.

> ---
>  ...01-configure-allow-cross-compilation.patch | 45 +++++++++++++++++++
>  1 file changed, 45 insertions(+)
>  create mode 100644 package/rhash/0001-configure-allow-cross-compilation.patch
> 
> diff --git a/package/rhash/0001-configure-allow-cross-compilation.patch b/package/rhash/0001-configure-allow-cross-compilation.patch
> new file mode 100644
> index 0000000000..e33353f8b3
> --- /dev/null
> +++ b/package/rhash/0001-configure-allow-cross-compilation.patch
> @@ -0,0 +1,45 @@
> +From 0605ddf795330c03ff52e993726de99a984cf2f4 Mon Sep 17 00:00:00 2001
> +From: Fabrice Fontaine <fontaine.fabrice@gmail.com>
> +Date: Sat, 10 Oct 2020 11:07:39 +0200
> +Subject: [PATCH] configure: allow cross-compilation
> +
> +Update configure to allow the user to pass a cross-compiler such as
> +--cc=/home/fabrice/buildroot/output/host/bin/riscv64-buildroot-linux-uclibc-gcc
> +
> +First, use --version instead of -v to avoid a build failure and set
> +cc_vendor to gnu if CC compiler contains gcc
> +
> +Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
> +---
> + configure | 8 ++++----
> + 1 file changed, 4 insertions(+), 4 deletions(-)
> +
> +diff --git a/configure b/configure
> +index 2783b85..c8e1ea7 100755
> +--- a/configure
> ++++ b/configure
> +@@ -512,9 +512,9 @@ else
> +   CC_TMP="$CC"
> +   test -n "$OPT_CC" && OTHER_CC= || OTHER_CC="gcc cc"
> +   for CC in "$CC_TMP" $OTHER_CC; do
> +-    if run_cmd "$CC -v"; then
> +-      cc_name_tmp=$($CC -v 2>&1 | tail -n 1 | cut -d ' ' -f 1)
> +-      if test "$cc_name_tmp" = "gcc"; then
> ++    if run_cmd "$CC --version"; then
> ++      cc_name_tmp=$($CC --version 2>&1 | head -n 1 | cut -d ' ' -f 1)
> ++      if echo "$cc_name_tmp" | grep -q "gcc"; then
> +         cc_name=$cc_name_tmp
> +         start_check "$CC version"
> +         cc_vendor=gnu
> +@@ -538,7 +538,7 @@ else
> +         finish_check "$cc_name $cc_version"
> +         break
> +       fi
> +-      if $CC -v 2>&1 | grep -q "clang"; then
> ++      if $CC --version 2>&1 | grep -q "clang"; then
> +         start_check "$CC version"
> +         cc_vendor=clang
> +         cc_version=$($CC -dumpversion 2>&1)
> +-- 
> +2.29.2
> +
> -- 
> 2.29.2
> 
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