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{ lib, clangStdenv, clang-sierraHack-stdenv }:
let
makeBigExe = stdenv: prefix: rec {
count = 500;
sillyLibs = lib.genList (i: stdenv.mkDerivation rec {
name = "${prefix}-fluff-${toString i}";
unpackPhase = ''
src=$PWD
cat << 'EOF' > ${name}.c
unsigned int asdf_${toString i}(void) {
return ${toString i};
}
EOF
'';
buildPhase = ''
$CC -std=c99 -shared ${name}.c -o lib${name}.dylib -Wl,-install_name,$out/lib/lib${name}.dylib
'';
installPhase = ''
mkdir -p "$out/lib"
mv lib${name}.dylib "$out/lib"
'';
}) count;
finalExe = stdenv.mkDerivation rec {
name = "${prefix}-final-asdf";
unpackPhase = ''
src=$PWD
cat << 'EOF' > main.cxx
#include <assert.h>
${toString (lib.genList (i: "extern \"C\" unsigned int asdf_${toString i}(void); ") count)}
unsigned int (*funs[])(void) = {
${toString (lib.genList (i: "asdf_${toString i},") count)}
};
int main(int argc, char **argv) {
unsigned int i = 0;
for (auto f : funs) {
assert(f() == i++);
}
return 0;
}
EOF
'';
buildPhase = ''
$CC -std=c++11 main.cxx ${toString (map (x: "-l${x.name}") sillyLibs)} -o asdf
'';
buildInputs = sillyLibs;
installPhase = ''
mkdir -p "$out/bin"
mv asdf "$out/bin"
'';
};
};
in {
good = makeBigExe clang-sierraHack-stdenv "good";
bad = makeBigExe clangStdenv "bad";
}
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