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https://github.com/git-for-windows/git.git
synced 2026-02-04 03:33:01 -06:00
mingw: rely on MSYS2's metadata instead of hard-coding it
MSYS2 defines some helpful environment variables, e.g. `MSYSTEM`. There is code in Git for Windows to ensure that that `MSYSTEM` variable is set, hard-coding a default. However, the existing solution jumps through hoops to reconstruct the proper default, and is even incomplete doing so, as we found out when we extended it to support CLANGARM64. This is absolutely unnecessary because there is already a perfectly valid `MSYSTEM` value we can use at build time. This is even true when building the MINGW32 variant on a MINGW64 system because `makepkg-mingw` will override the `MSYSTEM` value as per the `MINGW_ARCH` array. The same is equally true for the `/mingw64`, `/mingw32` and `/clangarm64` prefix: those values are already available via the `MINGW_PREFIX` environment variable, and we just need to pass that setting through. Only when `MINGW_PREFIX` is not set (as is the case in Git for Windows' minimal SDK, where only `MSYSTEM` is guaranteed to be set correctly), we use as fall-back the top-level directory whose name is the down-cased value of the `MSYSTEM` variable. Incidentally, this also broadens the support to all the configurations supported by the MSYS2 project, i.e. clang64 & ucrt64, too. Note: This keeps the same, hard-coded MSYSTEM platform support for CMake as before, but drops it for Meson (because it is unclear how Meson could do this in a more flexible manner). Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
This commit is contained in:
Johannes Schindelin
parent
513d221d6c
commit
eea27f530d
@ -3625,7 +3625,7 @@ int xwcstoutf(char *utf, const wchar_t *wcs, size_t utflen)
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}
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#ifdef ENSURE_MSYSTEM_IS_SET
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#if !defined(RUNTIME_PREFIX) || !defined(HAVE_WPGMPTR)
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#if !defined(RUNTIME_PREFIX) || !defined(HAVE_WPGMPTR) || !defined(MINGW_PREFIX)
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static size_t append_system_bin_dirs(char *path UNUSED, size_t size UNUSED)
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{
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return 0;
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@ -3643,25 +3643,16 @@ static size_t append_system_bin_dirs(char *path, size_t size)
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/* strip trailing `git.exe` */
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len = slash - prefix;
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/* strip trailing `cmd` or `mingw64\bin` or `mingw32\bin` or `bin` or `libexec\git-core` */
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if (strip_suffix_mem(prefix, &len, "\\mingw64\\libexec\\git-core") ||
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strip_suffix_mem(prefix, &len, "\\mingw64\\bin"))
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/* strip trailing `cmd` or `<mingw-prefix>\bin` or `bin` or `libexec\git-core` */
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if (strip_suffix_mem(prefix, &len, "\\" MINGW_PREFIX "\\libexec\\git-core") ||
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strip_suffix_mem(prefix, &len, "\\" MINGW_PREFIX "\\bin"))
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off += xsnprintf(path + off, size - off,
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"%.*s\\mingw64\\bin;", (int)len, prefix);
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else if (strip_suffix_mem(prefix, &len, "\\clangarm64\\libexec\\git-core") ||
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strip_suffix_mem(prefix, &len, "\\clangarm64\\bin"))
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off += xsnprintf(path + off, size - off,
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"%.*s\\clangarm64\\bin;", (int)len, prefix);
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else if (strip_suffix_mem(prefix, &len, "\\mingw32\\libexec\\git-core") ||
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strip_suffix_mem(prefix, &len, "\\mingw32\\bin"))
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off += xsnprintf(path + off, size - off,
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"%.*s\\mingw32\\bin;", (int)len, prefix);
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"%.*s\\" MINGW_PREFIX "\\bin;", (int)len, prefix);
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else if (strip_suffix_mem(prefix, &len, "\\cmd") ||
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strip_suffix_mem(prefix, &len, "\\bin") ||
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strip_suffix_mem(prefix, &len, "\\libexec\\git-core"))
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off += xsnprintf(path + off, size - off,
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"%.*s\\mingw%d\\bin;", (int)len, prefix,
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(int)(sizeof(void *) * 8));
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"%.*s\\" MINGW_PREFIX "\\bin;", (int)len, prefix);
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else
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return 0;
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@ -3757,13 +3748,7 @@ static void setup_windows_environment(void)
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char buf[32768];
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size_t off = 0;
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#if defined(__aarch64__) || defined(_M_ARM64) || defined(_M_ARM64EC)
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setenv("MSYSTEM", "CLANGARM64", 1);
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#elif defined(__MINGW64__) || defined(_M_AMD64)
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setenv("MSYSTEM", "MINGW64", 1);
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#else
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setenv("MSYSTEM", "MINGW32", 1);
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#endif
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setenv("MSYSTEM", ENSURE_MSYSTEM_IS_SET, 1);
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if (home)
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off += xsnprintf(buf + off, sizeof(buf) - off,
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@ -452,14 +452,8 @@ ifeq ($(uname_S),Windows)
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GIT_VERSION := $(GIT_VERSION).MSVC
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pathsep = ;
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# Assume that this is built in Git for Windows' SDK
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ifeq (MINGW32,$(MSYSTEM))
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prefix = /mingw32
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else
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ifeq (CLANGARM64,$(MSYSTEM))
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prefix = /clangarm64
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else
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prefix = /mingw64
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endif
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ifneq (,$(MSYSTEM))
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prefix = $(MINGW_PREFIX)
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endif
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# Prepend MSVC 64-bit tool-chain to PATH.
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#
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@ -529,7 +523,9 @@ endif
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compat/win32/pthread.o compat/win32/syslog.o \
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compat/win32/trace2_win32_process_info.o \
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compat/win32/dirent.o compat/win32/fscache.o compat/win32/wsl.o
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COMPAT_CFLAGS = -D__USE_MINGW_ACCESS -DDETECT_MSYS_TTY -DENSURE_MSYSTEM_IS_SET -DNOGDI -DHAVE_STRING_H -Icompat -Icompat/regex -Icompat/win32 -DSTRIP_EXTENSION=\".exe\"
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COMPAT_CFLAGS = -D__USE_MINGW_ACCESS -DDETECT_MSYS_TTY \
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-DENSURE_MSYSTEM_IS_SET="\"$(MSYSTEM)\"" -DMINGW_PREFIX="\"$(patsubst /%,%,$(MINGW_PREFIX))\"" \
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-DNOGDI -DHAVE_STRING_H -Icompat -Icompat/regex -Icompat/win32 -DSTRIP_EXTENSION=\".exe\"
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BASIC_LDFLAGS = -IGNORE:4217 -IGNORE:4049 -NOLOGO
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# invalidcontinue.obj allows Git's source code to close the same file
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# handle twice, or to access the osfhandle of an already-closed stdout
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@ -748,10 +744,16 @@ ifeq ($(uname_S),MINGW)
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BASIC_LDFLAGS += -Wl,--dynamicbase
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endif
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ifneq (,$(MSYSTEM))
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ifeq ($(MINGW_PREFIX),$(filter-out /%,$(MINGW_PREFIX)))
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# Override if empty or does not start with a slash
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MINGW_PREFIX := /$(shell echo '$(MSYSTEM)' | tr A-Z a-z)
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endif
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prefix = $(MINGW_PREFIX)
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HOST_CPU = $(patsubst %-w64-mingw32,%,$(MINGW_CHOST))
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BASIC_LDFLAGS += -Wl,--pic-executable
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COMPAT_CFLAGS += -DDETECT_MSYS_TTY -DENSURE_MSYSTEM_IS_SET
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COMPAT_CFLAGS += -DDETECT_MSYS_TTY \
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-DENSURE_MSYSTEM_IS_SET="\"$(MSYSTEM)\"" \
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-DMINGW_PREFIX="\"$(patsubst /%,%,$(MINGW_PREFIX))\""
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ifeq (MINGW32,$(MSYSTEM))
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BASIC_LDFLAGS += -Wl,--large-address-aware
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endif
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@ -282,7 +282,14 @@ if(CMAKE_SYSTEM_NAME STREQUAL "Windows")
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_CONSOLE DETECT_MSYS_TTY STRIP_EXTENSION=".exe" NO_SYMLINK_HEAD UNRELIABLE_FSTAT
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NOGDI OBJECT_CREATION_MODE=1 __USE_MINGW_ANSI_STDIO=0
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USE_NED_ALLOCATOR OVERRIDE_STRDUP MMAP_PREVENTS_DELETE USE_WIN32_MMAP
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HAVE_WPGMPTR ENSURE_MSYSTEM_IS_SET HAVE_RTLGENRANDOM)
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HAVE_WPGMPTR HAVE_RTLGENRANDOM)
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if(CMAKE_GENERATOR_PLATFORM STREQUAL "x64")
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add_compile_definitions(ENSURE_MSYSTEM_IS_SET="MINGW64" MINGW_PREFIX="mingw64")
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elseif(CMAKE_GENERATOR_PLATFORM STREQUAL "arm64")
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add_compile_definitions(ENSURE_MSYSTEM_IS_SET="CLANGARM64" MINGW_PREFIX="clangarm64")
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elseif(CMAKE_GENERATOR_PLATFORM STREQUAL "x86")
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add_compile_definitions(ENSURE_MSYSTEM_IS_SET="MINGW32" MINGW_PREFIX="mingw32")
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endif()
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list(APPEND compat_SOURCES
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compat/mingw.c
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compat/winansi.c
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13
meson.build
13
meson.build
@ -1271,7 +1271,6 @@ elif host_machine.system() == 'windows'
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libgit_c_args += [
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'-DDETECT_MSYS_TTY',
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'-DENSURE_MSYSTEM_IS_SET',
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'-DNATIVE_CRLF',
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'-DNOGDI',
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'-DNO_POSIX_GOODIES',
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@ -1281,6 +1280,18 @@ elif host_machine.system() == 'windows'
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'-D__USE_MINGW_ANSI_STDIO=0',
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]
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msystem = get_option('msystem')
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if msystem != ''
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mingw_prefix = get_option('mingw_prefix')
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if mingw_prefix == ''
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mingw_prefix = '/' + msystem.to_lower()
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endif
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libgit_c_args += [
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'-DENSURE_MSYSTEM_IS_SET="' + msystem + '"',
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'-DMINGW_PREFIX="' + mingw_prefix + '"'
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]
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endif
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libgit_dependencies += compiler.find_library('ntdll')
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libgit_include_directories += 'compat/win32'
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if compiler.get_id() == 'msvc'
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@ -21,6 +21,10 @@ option('runtime_prefix', type: 'boolean', value: false,
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description: 'Resolve ancillary tooling and support files relative to the location of the runtime binary instead of hard-coding them into the binary.')
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option('sane_tool_path', type: 'array', value: [],
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description: 'An array of paths to pick up tools from in case the normal tools are broken or lacking.')
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option('msystem', type: 'string', value: '',
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description: 'Fall-back on Windows when MSYSTEM is not set.')
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option('mingw_prefix', type: 'string', value: '',
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description: 'Fall-back on Windows when MINGW_PREFIX is not set.')
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# Build information compiled into Git and other parts like documentation.
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option('build_date', type: 'string', value: '',
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