c3be340eb6
Use -Wabi=2 to fix warnings about -Wabi having no effect on its own. This requires suppressing two warnings in src/c++11/debug.cc which do not affect the library ABI. Previously libstdc++ defaulted to --enable-werror but the -Werror flag was not actually added unless --enable-maintainer-mode was used. This is not documented and not the expected behaviour. This removes any special treatment for maintainer-mode, makes -Werror depend directly on --enable-werror, and changes the default to --enable-werror=no. PR libstdc++/86450 * acinclude.m4 (GLIBCXX_CHECK_COMPILER_FEATURES): Don't define WERROR. (GLIBCXX_EXPORT_FLAGS): Use -Wabi=2 instead of -Wabi. * configure: Regenerate. * configure.ac: Change GLIBCXX_ENABLE_WERROR default to "no". * doc/Makefile.in: Regenerate. * fragment.am: Set WERROR_FLAG to -Werror instead of $(WERROR). * include/Makefile.in: Regenerate. * libsupc++/Makefile.in: Regenerate. * po/Makefile.in: Regenerate. * python/Makefile.in: Regenerate. * src/Makefile.in: Regenerate. * src/c++11/Makefile.in: Regenerate. * src/c++11/debug.cc: Use diagnostic pragmas to suppress warnings from -Wabi=2 that don't affect exported symbols. * src/c++98/Makefile.in: Regenerate. * src/filesystem/Makefile.in: Regenerate. * testsuite/Makefile.in: Regenerate. From-SVN: r262824
39 lines
945 B
Plaintext
39 lines
945 B
Plaintext
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## This is used in all Makefile.am's. Set defaults here.
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# May be used by various substitution variables.
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gcc_version := $(shell @get_gcc_base_ver@ $(top_srcdir)/../gcc/BASE-VER)
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MAINT_CHARSET = latin1
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mkinstalldirs = $(SHELL) $(toplevel_srcdir)/mkinstalldirs
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PWD_COMMAND = $${PWDCMD-pwd}
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STAMP = echo timestamp >
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toolexecdir = $(glibcxx_toolexecdir)
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toolexeclibdir = $(glibcxx_toolexeclibdir)
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if ENABLE_WERROR
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WERROR_FLAG = -Werror
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else
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WERROR_FLAG =
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endif
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if ENABLE_EXTERN_TEMPLATE
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XTEMPLATE_FLAGS = -fno-implicit-templates
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else
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XTEMPLATE_FLAGS =
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endif
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# These bits are all figured out from configure. Look in acinclude.m4
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# or configure.ac to see how they are set. See GLIBCXX_EXPORT_FLAGS.
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CONFIG_CXXFLAGS = \
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$(SECTION_FLAGS) $(HWCAP_CFLAGS) -frandom-seed=$@
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WARN_CXXFLAGS = \
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$(WARN_FLAGS) $(WERROR_FLAG) -fdiagnostics-show-location=once
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# -I/-D flags to pass when compiling.
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AM_CPPFLAGS = $(GLIBCXX_INCLUDES) $(CPPFLAGS)
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