Date: Wed, 26 Feb 2014 17:37:15 -0800 From: Charles Swiger <cswiger@mac.com> To: Joe Nosay <superbisquit@gmail.com> Cc: ports <ports@freebsd.org> Subject: Re: CLang flags query:: I'm wanting to port software to FreeBSD Message-ID: <CC59A8DB-6D27-4712-ABE5-0C1DF2221B2B@mac.com> In-Reply-To: <CA%2BWntOufYoHVT7kpGasMNwnTYNWvaidf4z7Pv8mhaOOJWWfAeA@mail.gmail.com> References: <CA%2BWntOufYoHVT7kpGasMNwnTYNWvaidf4z7Pv8mhaOOJWWfAeA@mail.gmail.com>
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Hi-- On Feb 26, 2014, at 3:43 PM, Joe Nosay <superbisquit@gmail.com> wrote: > I've noticed different flags such as -Wno-parentheses and such along with > the -Wno-unused-variable. I would like to know where would be a good source > online to find the flags; For compatibility, clang understands the commonly used -W flags that gcc uses. More documentation is here: http://clang.llvm.org/docs/UsersManual.html ...and normally folks use -Wall, -Wpedantic, or -Weverything. However, if you truly want the complete list, run clang's "diagtool list-warnings": % clang/Debug+Asserts/bin/diagtool list-warnings Warnings with flags (924): backslash_newline_space [-Wbackslash-newline-escape] escaped_newline_block_comment_end [-Wcomment] ext_abstract_pack_declarator_parens [-Wanonymous-pack-parens] ext_aggregate_init_not_constant [-Wc99-extensions] [ ... ] warn_zero_size_struct_union_in_extern_c [-Wextern-c-compat] Warnings without flags (111): ext_delete_void_ptr_operand [ ... ] warn_weak_identifier_undeclared warn_weak_import STATISTICS: Percentage of warnings with flags: 89.28% Number of unique flags: 394 Average number of diagnostics per flag: 2.345 Number in -Wpedantic (not covered by other -W flags): 28 > and, I would like to know what flags are used by porters to optimize builds. The default CFLAGS should be respected, unless a port needs something in particular in order to work; see: http://www.freebsd.org/doc/en/books/porters-handbook/dads-cflags.html > These will be placed on the Makefile of the source such that it can be built natively > on FreeBSD. I would be able to test software. Good luck; and note that the entire porter's handbook is worth a read. :-) Regards, -- -Chuck
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