Filter out C, C++ build flags from Fortran build flags (#2177253)
And pave the way for future front-end-specific compiler flags.
This commit is contained in:
Florian Weimer
parent
24244c4ac2
commit
7692bbaf45
@ -36,9 +36,7 @@ Individual build flags are also available through RPM macros:
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* `%{build_cxx}` for the command name of the C++ compiler.
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* `%{build_cpp}` for the command name of the C-compatible preprocessor.
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* `%{build_cflags}` for the C compiler flags (also known as the
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`CFLAGS` variable). Also historically available as `%{optflags}`.
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Furthermore, at the start of the `%build` section, the environment
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variable `RPM_OPT_FLAGS` is set to this value.
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`CFLAGS` variable).
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* `%{build_cxxflags}` for the C++ compiler flags (usually assigned to
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the `CXXFLAGS` shell variable).
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* `%{build_fflags}` for `FFLAGS` (the Fortran compiler flags, also
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@ -50,6 +48,13 @@ Individual build flags are also available through RPM macros:
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driver. At the start of the `%build` section, the environment
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variable `RPM_LD_FLAGS` is set to this value.
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The C and C++ compiler flags are historically available as the
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`%{optflags}` macro. These flags may not contain flags that work with
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certain languagues or compiler front ends, so the language-specific
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`%build_*` are more precise. At the start of the `%build` section,
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the environment variable `RPM_OPT_FLAGS` is set to the `%{optflags}`
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value; similar limitations apply.
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The variable `LT_SYS_LIBRARY_PATH` is defined here to prevent the `libtool`
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script (v2.4.6+) from hardcoding `%_libdir` into the binaries' `RPATH`.
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@ -402,6 +407,9 @@ The general (architecture-independent) build flags are:
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compilation performance. (This does not affect code generation.)
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* `-Wall`: Turn on various GCC warnings.
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See the [GCC manual](https://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html#index-Wall).
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* `-Wno-complain-wrong-lang`: Do not warn about front end mismatches
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(e.g, using `-Werror=format-security` with Fortran). Only included
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in `%optflags`, and not the front-end-specific `%build_*` macros.
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* `-Werror=format-security`: Turn on format string warnings and treat
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them as errors.
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See the [GCC manual](https://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html#index-Wformat-security).
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29
macros
29
macros
@ -57,14 +57,14 @@
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# C compiler flags. This is traditionally called CFLAGS in makefiles.
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# Historically also available as %%{optflags}, and %%build sets the
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# environment variable RPM_OPT_FLAGS to this value.
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%build_cflags %{optflags} %{?_distro_extra_cflags}
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%build_cflags %{__build_flags_lang_c} %{?_distro_extra_cflags}
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# C++ compiler flags. This is traditionally called CXXFLAGS in makefiles.
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%build_cxxflags %{optflags} %{?_distro_extra_cxxflags}
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%build_cxxflags %{__build_flags_lang_cxx} %{?_distro_extra_cxxflags}
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# Fortran compiler flags. Makefiles use both FFLAGS and FCFLAGS as
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# the corresponding variable names.
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%build_fflags %{optflags} -I%{_fmoddir} %{?_distro_extra_fflags}
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%build_fflags %{__build_flags_common} -I%{_fmoddir} %{?_distro_extra_fflags}
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# Vala compiler flags. This is used to set VALAFLAGS.
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%build_valaflags -g
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@ -308,6 +308,12 @@ print(result)
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# Use Zstandard compression for binary payloads
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%_binary_payload w19.zstdio
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#==============================================================================
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# --- Compiler flags control.
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#
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# Please consult buildflags.md for parts that can be configured
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# from RPM spec files.
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%_hardening_gcc_cflags -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1
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%_hardening_clang_cflags --config /usr/lib/rpm/redhat/redhat-hardened-clang.cfg
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%_hardening_cflags %{expand:%%{_hardening_%{toolchain}_cflags}} -fstack-protector-strong
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@ -383,7 +389,7 @@ print(result)
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%_build_id_flags -Wl,--build-id=sha1
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%_general_options -O2 %{?_lto_cflags} -fexceptions -g -grecord-gcc-switches -pipe
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%_warning_options -Wall -Werror=format-security
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%_warning_options -Wall%[%__build_for_lang_any ? " -Wno-complain-wrong-lang" : ""]%[%__build_for_lang_c + %__build_for_lang_cxx ? " -Werror=format-security" : ""]
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%_preprocessor_defines %{_fortify_level_flags} -Wp,-D_GLIBCXX_ASSERTIONS
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# Common variables are no longer generated by default by gcc and clang
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@ -392,6 +398,21 @@ print(result)
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%__global_compiler_flags %{_general_options} %{_warning_options} %{_preprocessor_defines} %{_hardened_cflags} %{_annotation_cflags} %{_legacy_options}
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# Internal macros. Do not use directly. These variables can be rebound
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# to suppress certain frontend-specific compiler flags (or in the case
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# of __build_for_lang_any, frontend-agnostic flags). Dynamic scoping
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# and shadowing redefinitions are used for the __build_for_* variables
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# to remain largely compatible with existing spec files that have
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# hard-coded assumptions which macros assume which other macros.
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# Note: Using short-circuit evaluation with || in __build_for_* conditionals
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# may result in unused-macro warnings from RPM.
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%__build_for_lang_c 1
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%__build_for_lang_cxx 1
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%__build_for_lang_any 1
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%__build_flags_common() %{expand:%define __build_for_lang_c 0}%{expand:%define __build_for_lang_cxx 0}%{expand:%define __build_for_lang_any 0}%{optflags}
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%__build_flags_lang_c() %{expand:%define __build_for_lang_cxx 0}%{expand:%define __build_for_lang_any 0}%{optflags}
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%__build_flags_lang_cxx() %{expand:%define __build_for_lang_c 0}%{expand:%define __build_for_lang_any 0}%{optflags}
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# Automatically trim changelog entries after 2 years
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%_changelog_trimage %{expr:2*365*24*60*60}
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@ -4,7 +4,7 @@
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# 2) When making changes, increment the version (in baserelease) by 1.
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# rpmdev-bumpspec and other tools update the macro below, which is used
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# in Version: to get the desired effect.
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%global baserelease 258
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%global baserelease 259
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Summary: Red Hat specific rpm configuration files
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Name: redhat-rpm-config
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@ -254,6 +254,9 @@ install -p -m 644 -t %{buildroot}%{_rpmluadir}/fedora/srpm forge.lua
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%doc buildflags.md
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%changelog
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* Wed Jul 5 2023 Florian Weimer <fweimer@redhat.com> - 259-1
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- Filter out C, C++ build flags from Fortran build flags (#2177253)
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* Wed Jul 5 2023 Florian Weimer <fweimer@redhat.com> - 258-1
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- Enable PIC mode for assembler files (#2167430)
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