0a05618f11
to the gcc invocation. If we pass a flag like -Wl, then gcc will call the linker unless it can figure out that it has to do something else (e.g., because of a "-c" flag). So if no non-flag arguments are given, don't pass any linker flags. This catches cases like "gcc" (should just print "gcc: no input files") and "gcc -v" (should print the version). svn path=/nixpkgs/trunk/; revision=8644
42 lines
1.7 KiB
Nix
42 lines
1.7 KiB
Nix
# The Nix `gcc' stdenv.mkDerivation is not directly usable, since it doesn't
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# know where the C library and standard header files are. Therefore
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# the compiler produced by that package cannot be installed directly
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# in a user environment and used from the command line. This
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# stdenv.mkDerivation provides a wrapper that sets up the right environment
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# variables so that the compiler and the linker just "work".
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{ name ? "", stdenv, nativeTools, nativeLibc, nativePrefix ? ""
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, gcc ? null, libc ? null, binutils ? null, shell ? ""
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}:
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assert nativeTools -> nativePrefix != "";
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assert !nativeTools -> gcc != null && binutils != null;
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assert !nativeLibc -> libc != null;
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stdenv.mkDerivation {
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builder = ./builder.sh;
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setupHook = ./setup-hook.sh;
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gccWrapper = ./gcc-wrapper.sh;
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ldWrapper = ./ld-wrapper.sh;
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utils = ./utils.sh;
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addFlags = ./add-flags;
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inherit nativeTools nativeLibc nativePrefix gcc libc binutils;
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name = if name == "" then gcc.name else name;
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langC = if nativeTools then true else gcc.langC;
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langCC = if nativeTools then true else gcc.langCC;
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langF77 = if nativeTools then false else gcc.langF77;
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shell = if shell == "" then stdenv.shell else shell;
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meta = if gcc != null && (gcc ? meta) then gcc.meta else
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{ description = "System C compiler wrapper";
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};
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# The dynamic linker has different names on different Linux platforms.
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dynamicLinker =
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if !nativeLibc then
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(if stdenv.system == "i686-linux" then "ld-linux.so.2" else
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if stdenv.system == "x86_64-linux" then "ld-linux-x86-64.so.2" else
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if stdenv.system == "powerpc-linux" then "ld.so.1" else
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abort "don't know the name of the dynamic linker for this platform")
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else "";
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}
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