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Configure: clang: add -Wno-unknown-warning-option

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Fixes travis build errors due to clang

    error: unknown warning option '-Wno-extended-offsetof'

It seems like '-Wextended-offsetof' was removed from clang in version 6.0.0,
(see [1], [2]). While gcc ignores unknown options of the type '-Wno-xxx',
clang by default issues a warning [-Wunknown-warning-option] (see [3]), which
together with '-Werror' causes the build to fail.

This commit adds the '-Wno-unknown-warning-option' option to make clang
behave more relaxed like gcc.

[1] https://reviews.llvm.org/D40267
[2] https://github.com/llvm/llvm-project/commit/52a3ca9e2909
[3] https://clang.llvm.org/docs/DiagnosticsReference.html#wunknown-warning-option

[extended tests]

Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Bernd Edlinger <bernd.edlinger@hotmail.de>
(Merged from https://github.com/openssl/openssl/pull/9446)
This commit is contained in:
Dr. Matthias St. Pierre
2019-07-23 20:18:43 +02:00
parent 920e37e3a7
commit 6a7bad0fd7
1 changed files with 2 additions and 2 deletions
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4
Configure
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@@ -118,7 +118,7 @@ my $gcc_devteam_warn = "-Wall -pedantic -DPEDANTIC -Wno-long-long -Wsign-compare
# -Wincompatible-pointer-types-discards-qualifiers, -Wcast-align,
# -Wunreachable-code -Wunused-parameter -Wlanguage-extension-token
# -Wextended-offsetof
my $clang_disabled_warnings = "-Wno-unused-parameter -Wno-missing-field-initializers -Wno-language-extension-token -Wno-extended-offsetof";
my $clang_disabled_warnings = "-Wno-unknown-warning-option -Wno-unused-parameter -Wno-missing-field-initializers -Wno-language-extension-token -Wno-extended-offsetof";
# These are used in addition to $gcc_devteam_warn when the compiler is clang.
# TODO(openssl-team): fix problems and investigate if (at least) the
@@ -128,7 +128,7 @@ my $clang_disabled_warnings = "-Wno-unused-parameter -Wno-missing-field-initiali
# -Wincompatible-pointer-types-discards-qualifiers, -Wcast-align,
# -Wunreachable-code -Wunused-parameter -Wlanguage-extension-token
# -Wextended-offsetof
my $clang_devteam_warn = "-Wno-unused-parameter -Wno-missing-field-initializers -Wno-language-extension-token -Wno-extended-offsetof -Qunused-arguments";
my $clang_devteam_warn = "-Wno-unknown-warning-option -Wno-unused-parameter -Wno-missing-field-initializers -Wno-language-extension-token -Wno-extended-offsetof -Qunused-arguments";
# Warn that "make depend" should be run?
my $warn_make_depend = 0;