191 lines
6.1 KiB
C
191 lines
6.1 KiB
C
/*
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* This file is part of Jehanne.
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*
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* Copyright (C) 2016-2020 Giacomo Tesio <giacomo@tesio.it>
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*
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* Jehanne is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, version 2 of the License.
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*
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* Jehanne is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Jehanne. If not, see <http://www.gnu.org/licenses/>.
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*/
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#undef TARGET_JEHANNE
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#define TARGET_JEHANNE 1
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/* In Jehanne, GCC has to be able to build two different kind of programs
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* - native, directly repending on Jehanne's development environment
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* - posix, based on the mainstream standards
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*
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* LibPOSIX exists to enable, together with a standard library
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* (newlib, so far) the cooperation of these two worlds.
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*
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* By default, GCC will compile POSIX software looking for standard
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* libraries and includes in /posix subfolders.
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* However, the new option `-9` will enable the compilation of
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* native programs by REMOVING the POSIX stuffs from the various Specs.
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*/
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/* Architecture specific header (u.h) goes here (from config.gcc) */
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#define ARCH_INCLUDE_DIR NATIVE_SYSTEM_HEADER_DIR
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#define PORTABLE_INCLUDE_DIR "/sys/include"
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/* INCLUDE_DEFAULTS is used by gcc/cppdefault.c
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* The struct is defined in gcc/cppdefault.h
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*
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* struct default_include
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* {
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* const char *const fname; // The name of the directory.
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* const char *const component; // The component containing the directory
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* (see update_path in prefix.c)
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* const char cplusplus; // Only look here if we're compiling C++.
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* const char cxx_aware; // Includes in this directory don't need to
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* be wrapped in extern "C" when compiling
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* C++.
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* const char add_sysroot; // FNAME should be prefixed by
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* cpp_SYSROOT.
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* const char multilib; // FNAME should have appended
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* - the multilib path specified with -imultilib
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* when set to 1,
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* - the multiarch path specified with
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* -imultiarch, when set to 2.
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* };
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*
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* Since C++ assumes a POSIX environment, we include all of the POSIX
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* headers but with `cplusplus = 1`, to not mess native C compilation
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* that have to react to the `-9` option.
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*/
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/* C++ : only define values for INCLUDE_DEFAULTS */
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#ifdef GPLUSPLUS_INCLUDE_DIR
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# define JEHANNE_ID_GPLUSPLUS { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1, GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 },
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#else
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# define JEHANNE_ID_GPLUSPLUS
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#endif
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#ifdef GPLUSPLUS_TOOL_INCLUDE_DIR
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# define JEHANNE_ID_GPLUSPLUS_TOOL { GPLUSPLUS_TOOL_INCLUDE_DIR, "G++", 1, 1, GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 1 },
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#else
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# define JEHANNE_ID_GPLUSPLUS_TOOL
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#endif
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#ifdef GPLUSPLUS_BACKWARD_INCLUDE_DIR
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# define JEHANNE_ID_GPLUSPLUS_BACKWARD { GPLUSPLUS_BACKWARD_INCLUDE_DIR, "G++", 1, 1, GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 },
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#else
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# define JEHANNE_ID_GPLUSPLUS_BACKWARD
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#endif
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/* GCC's private headers. */
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#ifdef GCC_INCLUDE_DIR
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# define JEHANNE_ID_GCC { GCC_INCLUDE_DIR, "GCC", 0, 0, 0, 0 },
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#else
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# define JEHANNE_ID_GCC
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#endif
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#ifdef PREFIX_INCLUDE_DIR
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# define JEHANNE_ID_PREFIX { PREFIX_INCLUDE_DIR, 0, 0, 1, 0, 0 },
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#else
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# define JEHANNE_ID_PREFIX
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#endif
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#if defined (CROSS_INCLUDE_DIR) && defined (CROSS_DIRECTORY_STRUCTURE) && !defined (TARGET_SYSTEM_ROOT)
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# define JEHANNE_ID_CROSS { CROSS_INCLUDE_DIR, "GCC", 0, 0, 0, 0 },
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#else
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# define JEHANNE_ID_CROSS
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#endif
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/* Binutils headers. */
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#ifdef TOOL_INCLUDE_DIR
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# define JEHANNE_ID_TOOL { TOOL_INCLUDE_DIR, "BINUTILS", 0, 1, 0, 0 },
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#else
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# define JEHANNE_ID_TOOL
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#endif
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#define JEHANNE_POSIX_INCLUDE_DIR "/posix/include"
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#define JEHANNE_ID_POSIX { JEHANNE_POSIX_INCLUDE_DIR, 0, 0, 0, 1, 0 },
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#ifdef CROSS_DIRECTORY_STRUCTURE
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# define JEHANNE_POSIX_LIB_DIR "%:getenv(JEHANNE /posix/lib)"
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#else
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# define JEHANNE_POSIX_LIB_DIR "/posix/lib"
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#endif
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#undef INCLUDE_DEFAULTS
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#define INCLUDE_DEFAULTS \
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{ \
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JEHANNE_ID_GPLUSPLUS \
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JEHANNE_ID_GPLUSPLUS_TOOL \
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JEHANNE_ID_GPLUSPLUS_BACKWARD \
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JEHANNE_ID_GCC \
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JEHANNE_ID_POSIX \
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JEHANNE_ID_PREFIX \
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JEHANNE_ID_CROSS \
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JEHANNE_ID_TOOL \
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{ PORTABLE_INCLUDE_DIR, 0, 0, 0, 1, 0 }, \
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{ ARCH_INCLUDE_DIR, 0, 0, 0, 1, 0 }, \
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{ 0, 0, 0, 0, 0, 0 } \
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}
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#undef EXTRA_SPECS
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#define EXTRA_SPECS \
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{ "posixly_lib", "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}} -lposix" },
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/* These Specs reacts `-9` option by removing POSIX stuff */
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//#undef CPP_SPEC
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//#define CPP_SPEC "%{!9:%(posixly_isystems)}"
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/* Since -nostdinc++ doesn't exclude C headers but we have cheated
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* marking them as C++ headers, we need to add them back when
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* this option is provided
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*/
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//#undef CPLUSPLUS_CPP_SPEC
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//#define CPLUSPLUS_CPP_SPEC "%{nostdinc++:%(posixly_isystems)}"
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//#define CPLUSPLUS_CPP_SPEC ""
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#undef LINK_SPEC
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#define LINK_SPEC "%{!9:-L" JEHANNE_POSIX_LIB_DIR "}"
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#undef LIB_SPEC
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#define LIB_SPEC "%{!9:%(posixly_lib)} -ljehanne"
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#define DRIVER_SELF_SPECS "%{9:-fno-builtin -fno-omit-frame-pointer -fplan9-extensions -fvar-tracking -fvar-tracking-assignments}"
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/* Files that are linked before user code.
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The %s tells gcc to look for these files in the library directory. */
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#undef STARTFILE_SPEC
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#define STARTFILE_SPEC "crt0.o%s crti.o%s crtbegin.o%s"
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/* Files that are linked after user code. */
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#undef ENDFILE_SPEC
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#define ENDFILE_SPEC "crtend.o%s crtn.o%s"
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/* In Jehanne start files will be in /arch/amd64/lib, nearby libjehanne.a
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*/
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#undef STANDARD_STARTFILE_PREFIX
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#define STANDARD_STARTFILE_PREFIX "/arch/amd64/lib/"
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/* Fix https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67132 */
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#undef WCHAR_TYPE
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#define WCHAR_TYPE "unsigned int"
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#undef WCHAR_TYPE_SIZE
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#define WCHAR_TYPE_SIZE 32
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#undef LINK_GCC_C_SEQUENCE_SPEC
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#define LINK_GCC_C_SEQUENCE_SPEC "%G %L"
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/* Additional predefined macros. */
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#undef TARGET_OS_CPP_BUILTINS
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#define TARGET_OS_CPP_BUILTINS() \
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do { \
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builtin_define ("__jehanne__"); \
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builtin_assert ("system=jehanne"); \
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} while(0);
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