On 2 Jul, [email protected] wrote:
> This is an automated email from the ASF dual-hosted git repository.
>
> jimjag pushed a commit to branch trunk
> in repository https://gitbox.apache.org/repos/asf/openoffice.git
>
>
> The following commit(s) were added to refs/heads/trunk by this push:
> new 7ce5b5df31 Raise the C++ standard floor to C++11 on Linux and FreeBSD
> 7ce5b5df31 is described below
>
> commit 7ce5b5df31d462d18bd1a27767f9ee8b2b323b86
> Author: Jim Jagielski <[email protected]>
> AuthorDate: Thu Jul 2 05:33:55 2026 -0400
>
> Raise the C++ standard floor to C++11 on Linux and FreeBSD
That breaks the build on CentOS 5. Are we dropping support for it?
> Linux and FreeBSD were pinned to -std=gnu++98 while macOS already
> builds at C++11. Bump both platforms (dmake and gbuild build systems)
> to -std=gnu++11, making C++11 the lowest supported standard across all
> platforms. gnu++11 (rather than strict c++11) preserves the GNU dialect
> the codebase relies on and avoids __STRICT_ANSI__ system-header fallout.
>
> Compiler floor is GCC 4.8.5 (CentOS 7), which fully supports gnu++11.
> ---
> main/solenv/gbuild/platform/freebsd.mk | 8 +++++---
> main/solenv/gbuild/platform/linux.mk | 8 +++++---
> main/solenv/inc/unxfbsd.mk | 11 +++++++++--
> main/solenv/inc/unxlng.mk | 12 ++++++++++--
> 4 files changed, 29 insertions(+), 10 deletions(-)
>
> diff --git a/main/solenv/gbuild/platform/freebsd.mk
> b/main/solenv/gbuild/platform/freebsd.mk
> index b1259cb42d..6433fa2c80 100644
> --- a/main/solenv/gbuild/platform/freebsd.mk
> +++ b/main/solenv/gbuild/platform/freebsd.mk
> @@ -92,7 +92,7 @@ gb_CXXFLAGS := \
> -fno-use-cxa-atexit \
> -fvisibility-inlines-hidden \
> -fvisibility=hidden \
> - -std=gnu++98 \
> + -std=gnu++11 \
> -pipe
> ifeq ($(COM),CLANG)
> gb_CXXFLAGS += -DHAVE_STL_INCLUDE_PATH
> @@ -101,8 +101,10 @@ gb_CXXFLAGS += -DBOOST_TR1_DISABLE_INCLUDE_NEXT
> -DBOOST_TR1_GCC_INCLUDE_PATH=c++
> endif
>
> ifneq ($(EXTERNAL_WARNINGS_NOT_ERRORS),TRUE)
> -gb_CFLAGS_WERROR := -Werror
> -gb_CXXFLAGS_WERROR := -Werror
> +# C++11 deprecation/narrowing warnings (std::auto_ptr, dynamic exception
> specs,
> +# braced-init narrowing) must not be fatal. Mirrors macosx.mk.
> +gb_CFLAGS_WERROR := -Werror -Wno-error=deprecated
> -Wno-error=deprecated-declarations -Wno-error=narrowing
> +gb_CXXFLAGS_WERROR := -Werror -Wno-error=deprecated
> -Wno-error=deprecated-declarations -Wno-error=narrowing
> endif
>
> ifneq ($(strip $(SYSBASE)),)
> diff --git a/main/solenv/gbuild/platform/linux.mk
> b/main/solenv/gbuild/platform/linux.mk
> index 874dbde417..5777898295 100644
> --- a/main/solenv/gbuild/platform/linux.mk
> +++ b/main/solenv/gbuild/platform/linux.mk
> @@ -89,12 +89,14 @@ gb_CXXFLAGS := \
> -fuse-cxa-atexit \
> -fvisibility-inlines-hidden \
> -fvisibility=hidden \
> - -std=gnu++98 \
> + -std=gnu++11 \
> -pipe \
>
> ifneq ($(EXTERNAL_WARNINGS_NOT_ERRORS),TRUE)
> -gb_CFLAGS_WERROR := -Werror
> -gb_CXXFLAGS_WERROR := -Werror
> +# C++11 deprecation/narrowing warnings (std::auto_ptr, dynamic exception
> specs,
> +# braced-init narrowing) must not be fatal. Mirrors macosx.mk.
> +gb_CFLAGS_WERROR := -Werror -Wno-error=deprecated
> -Wno-error=deprecated-declarations -Wno-error=narrowing
> +gb_CXXFLAGS_WERROR := -Werror -Wno-error=deprecated
> -Wno-error=deprecated-declarations -Wno-error=narrowing
> endif
>
> ifneq ($(strip $(SYSBASE)),)
> diff --git a/main/solenv/inc/unxfbsd.mk b/main/solenv/inc/unxfbsd.mk
> index 3e2575f53f..f27ef2a7ba 100644
> --- a/main/solenv/inc/unxfbsd.mk
> +++ b/main/solenv/inc/unxfbsd.mk
> @@ -105,7 +105,11 @@ CFLAGSEXCEPTIONS=-fexceptions -fno-enforce-eh-specs
> CFLAGS_NO_EXCEPTIONS=-fno-exceptions
>
> # -fpermissive should be removed as soon as possible
> -CFLAGSCXX= -pipe $(ARCH_FLAGS) -std=gnu++98
> +# C++11 is the lowest supported standard (matches the macOS floor). Our old
> +# code base still uses constructs deprecated in C++11 (notably std::auto_ptr
> and
> +# dynamic exception specifications); those remain valid until C++17 and are
> kept
> +# non-fatal via -Wno-error= below.
> +CFLAGSCXX= -pipe $(ARCH_FLAGS) -std=gnu++11
> .IF "$(HAVE_GCC_VISIBILITY_FEATURE)" == "TRUE"
> CFLAGSCXX += -fvisibility-inlines-hidden
> .ENDIF # "$(HAVE_GCC_VISIBILITY_FEATURE)" == "TRUE"
> @@ -139,7 +143,10 @@ CFLAGSWARNCXX=$(CFLAGSWARNCC) -Wshadow
> -Wno-ctor-dtor-privacy \
> -Wno-non-virtual-dtor
> CFLAGSWALLCC=$(CFLAGSWARNCC)
> CFLAGSWALLCXX=$(CFLAGSWARNCXX)
> -CFLAGSWERRCC=-Werror
> +# Keep -Werror, but do not let the C++11 dialect's deprecation/narrowing
> +# warnings (std::auto_ptr, dynamic exception specs, braced-init narrowing)
> break
> +# the build. Mirrors the macOS handling in unxmacc.mk.
> +CFLAGSWERRCC=-Werror -Wno-error=deprecated
> -Wno-error=deprecated-declarations -Wno-error=narrowing
>
> # Once all modules on this platform compile without warnings, set
> # COMPILER_WARN_ERRORS=TRUE here instead of setting MODULES_WITH_WARNINGS
> (see
> diff --git a/main/solenv/inc/unxlng.mk b/main/solenv/inc/unxlng.mk
> index cdbe591b4d..5c2e13c936 100644
> --- a/main/solenv/inc/unxlng.mk
> +++ b/main/solenv/inc/unxlng.mk
> @@ -88,7 +88,12 @@ CFLAGSEXCEPTIONS=-fexceptions -fno-enforce-eh-specs
> CFLAGS_NO_EXCEPTIONS=-fno-exceptions
>
> # -fpermissive should be removed as soon as possible
> -CFLAGSCXX= -pipe $(ARCH_FLAGS) -std=gnu++98
> +# C++11 is the lowest supported standard (matches the macOS floor). Our old
> +# code base still uses constructs deprecated in C++11 (notably std::auto_ptr
> and
> +# dynamic exception specifications); those remain valid until C++17 and are
> kept
> +# non-fatal via -Wno-error= below. The compiler floor is GCC 4.8.5 (CentOS
> 7),
> +# which fully supports gnu++11.
> +CFLAGSCXX= -pipe $(ARCH_FLAGS) -std=gnu++11
> .IF "$(HAVE_GCC_VISIBILITY_FEATURE)" == "TRUE"
> CFLAGSCXX += -fvisibility-inlines-hidden
> .ENDIF # "$(HAVE_GCC_VISIBILITY_FEATURE)" == "TRUE"
> @@ -127,7 +132,10 @@ CFLAGSWARNCXX=$(CFLAGSWARNCC) -Wshadow
> -Wno-ctor-dtor-privacy \
> -Wno-non-virtual-dtor
> CFLAGSWALLCC=$(CFLAGSWARNCC)
> CFLAGSWALLCXX=$(CFLAGSWARNCXX)
> -CFLAGSWERRCC=-Werror
> +# Keep -Werror, but do not let the C++11 dialect's deprecation/narrowing
> +# warnings (std::auto_ptr, dynamic exception specs, braced-init narrowing)
> break
> +# the build. Mirrors the macOS handling in unxmacc.mk.
> +CFLAGSWERRCC=-Werror -Wno-error=deprecated
> -Wno-error=deprecated-declarations -Wno-error=narrowing
>
> # Once all modules on this platform compile without warnings, set
> # COMPILER_WARN_ERRORS=TRUE here instead of setting MODULES_WITH_WARNINGS
> (see
>
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