Custom rustc target for Windows especially #191
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It would be nice if all the native ~\Documents\GitHub\libR-sys> R CMD config --ldflags
-LC:/Users/tpb398/scoop/apps/R/current/bin/x64 -lR -lm
~\Documents\GitHub\libR-sys> R CMD config --cppflags
-IC:/Users/tpb398/scoop/apps/R/current/include -IC:/Users/tpb398/scoop/apps/R/current/include/x64Details
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CGMossa
changed the title
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Progress! rust-lang/rust#104761 |
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I've been on a journey to remove
libgcc_ehandlibgcc_s.a, and this is what I found out.Resulting in:
Details
{ "abi-return-struct-as-int": true, "allows-weak-linkage": false, "arch": "x86_64", "cpu": "x86-64", "crt-objects-fallback": "mingw", "data-layout": "e-m:w-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128", "debuginfo-kind": "pdb", "dll-prefix": "", "dll-suffix": ".dll", "dll-tls-export": false, "dynamic-linking": true, "eh-frame-header": false, "emit-debug-gdb-scripts": false, "env": "gnu", "exe-suffix": ".exe", "function-sections": false, "is-builtin": true, "is-like-windows": true, "late-link-args": { "gnu": [ "-lmsvcrt", "-lmingwex", "-lmingw32", "-lgcc", "-lmsvcrt", "-luser32", "-lkernel32" ], "gnu-cc": [ "-lmsvcrt", "-lmingwex", "-lmingw32", "-lgcc", "-lmsvcrt", "-luser32", "-lkernel32" ], "gnu-lld": [ "-lmsvcrt", "-lmingwex", "-lmingw32", "-lgcc", "-lmsvcrt", "-luser32", "-lkernel32" ], "gnu-lld-cc": [ "-lmsvcrt", "-lmingwex", "-lmingw32", "-lgcc", "-lmsvcrt", "-luser32", "-lkernel32" ] }, "late-link-args-dynamic": { "gnu": [ "-lgcc_s" ], "gnu-cc": [ "-lgcc_s" ], "gnu-lld": [ "-lgcc_s" ], "gnu-lld-cc": [ "-lgcc_s" ] }, "late-link-args-static": { "gnu": [ "-lgcc_eh", "-l:libpthread.a" ], "gnu-cc": [ "-lgcc_eh", "-l:libpthread.a" ], "gnu-lld": [ "-lgcc_eh", "-l:libpthread.a" ], "gnu-lld-cc": [ "-lgcc_eh", "-l:libpthread.a" ] }, "linker": "x86_64-w64-mingw32-gcc", "linker-flavor": "gnu-cc", "llvm-target": "x86_64-pc-windows-gnu", "max-atomic-width": 64, "os": "windows", "plt-by-default": false, "post-link-objects": { "dynamic-dylib": [ "rsend.o" ], "dynamic-nopic-exe": [ "rsend.o" ], "dynamic-pic-exe": [ "rsend.o" ], "static-dylib": [ "rsend.o" ], "static-nopic-exe": [ "rsend.o" ], "static-pic-exe": [ "rsend.o" ] }, "post-link-objects-fallback": { "dynamic-dylib": [ "rsend.o" ], "dynamic-nopic-exe": [ "rsend.o" ], "dynamic-pic-exe": [ "rsend.o" ], "static-dylib": [ "rsend.o" ], "static-nopic-exe": [ "rsend.o" ], "static-pic-exe": [ "rsend.o" ] }, "pre-link-args": { "gnu": [ "--dynamicbase", "--disable-auto-image-base", "-m", "i386pep", "--high-entropy-va" ], "gnu-cc": [ "-fno-use-linker-plugin", "-Wl,--dynamicbase", "-Wl,--disable-auto-image-base", "-m64", "-Wl,--high-entropy-va" ], "gnu-lld": [ "--dynamicbase", "--disable-auto-image-base", "-m", "i386pep", "--high-entropy-va" ], "gnu-lld-cc": [ "-fno-use-linker-plugin", "-Wl,--dynamicbase", "-Wl,--disable-auto-image-base", "-m64", "-Wl,--high-entropy-va" ] }, "pre-link-objects": { "dynamic-dylib": [ "rsbegin.o" ], "dynamic-nopic-exe": [ "rsbegin.o" ], "dynamic-pic-exe": [ "rsbegin.o" ], "static-dylib": [ "rsbegin.o" ], "static-nopic-exe": [ "rsbegin.o" ], "static-pic-exe": [ "rsbegin.o" ] }, "pre-link-objects-fallback": { "dynamic-dylib": [ "dllcrt2.o", "rsbegin.o" ], "dynamic-nopic-exe": [ "crt2.o", "rsbegin.o" ], "dynamic-pic-exe": [ "crt2.o", "rsbegin.o" ], "static-dylib": [ "dllcrt2.o", "rsbegin.o" ], "static-nopic-exe": [ "crt2.o", "rsbegin.o" ], "static-pic-exe": [ "crt2.o", "rsbegin.o" ] }, "requires-uwtable": true, "target-family": [ "windows" ], "target-pointer-width": "64", "vendor": "pc" }Information about what can be set in these files are: https://doc.rust-lang.org/beta/nightly-rustc/rustc_target/spec/struct.TargetOptions.html
Then I read about how one could make their own custom target json file and use that instead of relaying on these ones, see https://docs.rust-embedded.org/embedonomicon/custom-target.html
"is-builtin": false-lgcc_s, and-lgcc_ehfrom everywhere.gcc_ehis the one responsible for normal panics.linkerfromx86_64-w64-mingw32-gcc, tox86_64-w64-mingw32.static.posix-gcc.exelinker-flavortogcc.pre-link-args:Maybe I should use
R CMD config --ldflags:I've tried this with
libR-sysonmain-branch:with
.cargo/config.tomlfile that is:But I get these weird
netmissing issues or something. See below:Details
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