linux-kernel - [PATCH] gcc-plugins: Enable error message print

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Date:   Tue, 13 Aug 2019 17:44:49 +0800
From:   <zhe.he@...driver.com>
To:     <keescook@...omium.org>, <re.emese@...il.com>,
        <kernel-hardening@...ts.openwall.com>,
        <linux-kernel@...r.kernel.org>, <zhe.he@...driver.com>
Subject: [PATCH] gcc-plugins: Enable error message print

From: He Zhe <zhe.he@...driver.com>

Instead of sliently emptying CONFIG_PLUGIN_HOSTCC which is the dependency
of a series of configurations, the following error message would be easier
for users to find something is wrong and what is happening.

scripts/gcc-plugins/gcc-common.h:5:22: fatal error: bversion.h:
No such file or directory
compilation terminated.

Now that we have already got the error message switch, let's turn it on.

Signed-off-by: He Zhe <zhe.he@...driver.com>
---
 scripts/gcc-plugins/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/gcc-plugins/Kconfig b/scripts/gcc-plugins/Kconfig
index d33de0b..fe28cb9 100644
--- a/scripts/gcc-plugins/Kconfig
+++ b/scripts/gcc-plugins/Kconfig
@@ -3,7 +3,7 @@ preferred-plugin-hostcc := $(if-success,[ $(gcc-version) -ge 40800 ],$(HOSTCXX),
 
 config PLUGIN_HOSTCC
 	string
-	default "$(shell,$(srctree)/scripts/gcc-plugin.sh "$(preferred-plugin-hostcc)" "$(HOSTCXX)" "$(CC)")" if CC_IS_GCC
+	default "$(shell,$(srctree)/scripts/gcc-plugin.sh --show-error "$(preferred-plugin-hostcc)" "$(HOSTCXX)" "$(CC)")" if CC_IS_GCC
 	help
 	  Host compiler used to build GCC plugins.  This can be $(HOSTCXX),
 	  $(HOSTCC), or a null string if GCC plugin is unsupported.
-- 
2.7.4