diff --git a/pkgs/tools/misc/fluent-bit/default.nix b/pkgs/tools/misc/fluent-bit/default.nix
index f109056cc265..a674bee64560 100644
--- a/pkgs/tools/misc/fluent-bit/default.nix
+++ b/pkgs/tools/misc/fluent-bit/default.nix
@@ -26,16 +26,20 @@ stdenv.mkDerivation (finalAttrs: {
   buildInputs = [ openssl libyaml postgresql ]
     ++ lib.optionals stdenv.isLinux [ systemd ];
 
-  cmakeFlags = [ "-DFLB_METRICS=ON" "-DFLB_HTTP_SERVER=ON" "-DFLB_OUT_PGSQL=ON"  ];
+  cmakeFlags = [
+    "-DFLB_RELEASE=ON"
+    "-DFLB_METRICS=ON"
+    "-DFLB_HTTP_SERVER=ON"
+    "-DFLB_OUT_PGSQL=ON"
+  ];
 
-  # _FORTIFY_SOURCE requires compiling with optimization (-O)
-  env.NIX_CFLAGS_COMPILE = toString (lib.optionals stdenv.cc.isGNU [ "-O" ]
-    # Workaround build failure on -fno-common toolchains:
-    #   ld: /monkey/mk_tls.h:81: multiple definition of `mk_tls_server_timeout';
-    #     flb_config.c.o:include/monkey/mk_tls.h:81: first defined here
-    # TODO: drop when upstream gets a fix for it:
-    #   https://github.com/fluent/fluent-bit/issues/5537
-    ++ lib.optionals stdenv.isDarwin [ "-fcommon" ]);
+  env.NIX_CFLAGS_COMPILE = toString (
+    # Used by the embedded luajit, but is not predefined on older mac SDKs.
+    lib.optionals stdenv.isDarwin [ "-DTARGET_OS_IPHONE=0" ]
+    # Assumes GNU version of strerror_r, and the posix version has an
+    # incompatible return type.
+    ++ lib.optionals (!stdenv.hostPlatform.isGnu) [ "-Wno-int-conversion" ]
+  );
 
   outputs = [ "out" "dev" ];
 
@@ -50,6 +54,6 @@ stdenv.mkDerivation (finalAttrs: {
     homepage = "https://fluentbit.io";
     license = lib.licenses.asl20;
     maintainers = [ lib.maintainers.samrose lib.maintainers.fpletz ];
-    platforms = lib.platforms.linux;
+    platforms = lib.platforms.unix;
   };
 })
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 21e22cb237bc..8cedede61ecb 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -8157,7 +8157,7 @@ with pkgs;
     icu = icu63;
   };
 
-  fluent-bit = callPackage ../tools/misc/fluent-bit { };
+  fluent-bit = darwin.apple_sdk_11_0.callPackage ../tools/misc/fluent-bit { };
 
   fluent-reader = callPackage ../applications/networking/feedreaders/fluent-reader { };