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Diffstat (limited to 'pkgs/test/ld-library-path/default.nix')
-rw-r--r-- | pkgs/test/ld-library-path/default.nix | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/pkgs/test/ld-library-path/default.nix b/pkgs/test/ld-library-path/default.nix new file mode 100644 index 00000000000..bda3f0be84a --- /dev/null +++ b/pkgs/test/ld-library-path/default.nix @@ -0,0 +1,88 @@ +{ stdenv }: + +# This tests that libraries listed in LD_LIBRARY_PATH take precedence over those listed in RPATH. + +let + # A simple test library: libgreeting.so which exports a single function getGreeting() returning the good old hello greeting. + libgreeting = stdenv.mkDerivation { + name = "libgreeting"; + + code = '' + const char* getGreeting() { return "Hello, world!"; } + ''; + + unpackPhase = '' + echo "$code" > libgreeting.c + ''; + + installPhase = '' + mkdir -p $out/lib + $CC -c -fpic libgreeting.c + $CC -shared libgreeting.o -o $out/lib/libgreeting.so + ''; + }; + + # A variant of libgreeting.so that returns a different message. + libgoodbye = libgreeting.overrideAttrs (_: { + name = "libgoodbye"; + code = '' + const char* getGreeting() { return "Goodbye, world!"; } + ''; + }); + + # A simple consumer of libgreeting.so that just prints the greeting to stdout. + testProgram = stdenv.mkDerivation { + name = "greeting-test"; + + buildInputs = [ libgreeting ]; + + code = '' + #include <stdio.h> + + extern const char* getGreeting(void); + + int main() { + puts(getGreeting()); + } + ''; + + unpackPhase = '' + echo "$code" > greeting-test.c + ''; + + installPhase = '' + mkdir -p $out/bin + $CC -c greeting-test.c + $CC greeting-test.o -lgreeting -o $out/bin/greeting-test + + # Now test the installed binaries right after compiling them. In particular, + # don't do this in installCheckPhase because fixupPhase has been run by then! + ( + export PATH=$out/bin + set -x + + # Verify that our unmodified binary works as expected. + [ "$(greeting-test)" = "Hello, world!" ] + + # And finally, test that a library in LD_LIBRARY_PATH takes precedence over the linked-in library. + [ "$(LD_LIBRARY_PATH=${libgoodbye}/lib greeting-test)" = "Goodbye, world!" ] + ) + ''; + + }; +in stdenv.mkDerivation { + name = "test-LD_LIBRARY_PATH"; + nativeBuildInputs = [ testProgram ]; + + buildCommand = '' + # And for good measure, repeat the tests again from a separate derivation, + # as fixupPhase done by the stdenv can (and has!) affect the result. + + [ "$(greeting-test)" = "Hello, world!" ] + [ "$(LD_LIBRARY_PATH=${libgoodbye}/lib greeting-test)" = "Goodbye, world!" ] + + touch $out + ''; + + meta.platforms = stdenv.lib.platforms.linux; +} |