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elfutils: Pass -Wno-unused-result to silence warnings as errors

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elfutils turns on -Werror by default, and patch 100-musl-compat.patch
changes how strerror_r is used and we no longer use the function's
return value. This causes the following build error/warning to occur
with glibc-based toolchains:

dwfl_error.c: In function 'dwfl_errmsg':
dwfl_error.c:158:18: error: ignoring return value of 'strerror_r',
declared with attribute warn_unused_result [-Werror=unused-result]
       strerror_r (error & 0xffff, s, sizeof(s));
                  ^
cc1: all warnings being treated as errors

Fixing this would be tricky as there are two possible signatures for
strerror_r (XSI and GNU), just turn off unused-result warnings instead.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
This commit is contained in:
Florian Fainelli 2017-05-22 16:08:57 -07:00
parent b32689afd6
commit 484f768dfa
1 changed files with 1 additions and 1 deletions
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2
package/libs/elfutils/Makefile
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@ -68,7 +68,7 @@ endif
CONFIGURE_ARGS += \
--without-lzma
TARGET_CFLAGS += -D_GNU_SOURCE
TARGET_CFLAGS += -D_GNU_SOURCE -Wno-unused-result
define Build/InstallDev
$(INSTALL_DIR) $(1)/usr/include