diff --git a/Cargo.lock b/Cargo.lock
index f956cd04b4..a1d84d0a16 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -655,6 +655,12 @@ dependencies = [
  "memchr",
 ]
 
+[[package]]
+name = "current_platform"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a74858bcfe44b22016cb49337d7b6f04618c58e5dbfdef61b06b8c434324a0bc"
+
 [[package]]
 name = "darling"
 version = "0.20.8"
@@ -2307,6 +2313,7 @@ name = "php_sidecar_mockgen"
 version = "0.1.0"
 dependencies = [
  "cc_utils",
+ "current_platform",
  "sidecar_mockgen",
 ]
 
diff --git a/Makefile b/Makefile
index 70cea4bd77..b948f670c6 100644
--- a/Makefile
+++ b/Makefile
@@ -42,6 +42,13 @@ INIT_HOOK_TEST_FILES = $(shell find tests/C2PHP -name '*.phpt' -o -name '*.inc'
 M4_FILES = $(shell find m4 -name '*.m4*' | awk '{ printf "$(BUILD_DIR)/%s\n", $$1 }' ) $(BUILD_DIR)/config.m4
 XDEBUG_SO_FILE = $(shell find $(shell php-config --extension-dir) -type f -name "xdebug*.so" -exec basename {} \; | tail -n 1)
 
+# Make 'sed -i' portable
+ifeq ($(shell uname),Darwin)
+	SED_I = sed -i ''
+else
+	SED_I = sed -i
+endif
+
 all: $(BUILD_DIR)/configure $(SO_FILE)
 
 # The following differentiation exists so we can build only (but always) the relevant files while executing tests
@@ -67,13 +74,13 @@ $(BUILD_DIR)/%Cargo.toml: %Cargo.toml
 	$(Q) echo Copying $*Cargo.toml to $@
 	$(Q) mkdir -p $(dir $@)
 	$(Q) cp -a $*Cargo.toml $@
-	sed -i -E 's/"\.\.\/([^"]*)"/"..\/..\/..\/\1"/' $@
+	$(SED_I) -E 's/"\.\.\/([^"]*)"/"..\/..\/..\/\1"/' $@
 
 $(BUILD_DIR)/Cargo.toml: Cargo.toml
 	$(Q) echo Copying Cargo.toml to $@
 	$(Q) mkdir -p $(dir $@)
 	$(Q) cp -a Cargo.toml $@
-	sed -i -E 's/, "profiling",?//' $@
+	$(SED_I) -E 's/, "profiling",?//' $@
 
 $(BUILD_DIR)/%: %
 	$(Q) echo Copying $* to $@
@@ -86,7 +93,7 @@ JUNIT_RESULTS_DIR := $(shell pwd)
 all: $(BUILD_DIR)/configure $(SO_FILE)
 
 $(BUILD_DIR)/configure: $(M4_FILES) $(BUILD_DIR)/ddtrace.sym $(BUILD_DIR)/VERSION
-	$(Q) (cd $(BUILD_DIR); phpize && sed -i 's/\/FAILED/\/\\bFAILED/' $(BUILD_DIR)/run-tests.php) # Fix PHP 5.4 exit code bug when running selected tests (FAILED vs XFAILED)
+	$(Q) (cd $(BUILD_DIR); phpize && $(SED_I) 's/\/FAILED/\/\\bFAILED/' $(BUILD_DIR)/run-tests.php) # Fix PHP 5.4 exit code bug when running selected tests (FAILED vs XFAILED)
 
 $(BUILD_DIR)/Makefile: $(BUILD_DIR)/configure
 	$(Q) (cd $(BUILD_DIR); ./configure --$(if $(RUST_DEBUG_BUILD),enable,disable)-ddtrace-rust-debug)
@@ -289,7 +296,7 @@ test_coverage_collect:
 		--exclude "$(BUILD_DIR)/src/dogstatsd/*" \
 		--exclude "$(BUILD_DIR)/src/dogstatsd/dogstatsd_client/*" \
 		--output-file $(PROJECT_ROOT)/tmp/coverage.info
-	$(Q) sed -i 's+tmp/build_extension/ext+ext+g' $(PROJECT_ROOT)/tmp/coverage.info
+	$(Q) $(SED_I) 's+tmp/build_extension/ext+ext+g' $(PROJECT_ROOT)/tmp/coverage.info
 
 test_coverage_output:
 	$(Q) genhtml \
diff --git a/components-rs/php_sidecar_mockgen/Cargo.toml b/components-rs/php_sidecar_mockgen/Cargo.toml
index 21a3a18987..4b010850c2 100644
--- a/components-rs/php_sidecar_mockgen/Cargo.toml
+++ b/components-rs/php_sidecar_mockgen/Cargo.toml
@@ -5,6 +5,7 @@ version = "0.1.0"
 
 [dependencies]
 cc_utils = { path = "../../libdatadog/tools/cc_utils" }
+current_platform = "0.2.0"
 sidecar_mockgen = { path = "../../libdatadog/tools/sidecar_mockgen" }
 
 [[bin]]
diff --git a/components-rs/php_sidecar_mockgen/src/bin/php_sidecar_mockgen.rs b/components-rs/php_sidecar_mockgen/src/bin/php_sidecar_mockgen.rs
index d7471a0875..a31c034e07 100644
--- a/components-rs/php_sidecar_mockgen/src/bin/php_sidecar_mockgen.rs
+++ b/components-rs/php_sidecar_mockgen/src/bin/php_sidecar_mockgen.rs
@@ -44,7 +44,22 @@ fn main() {
     if fs::metadata("mock_php.shared_lib").map_or(true, |m| m.modified().unwrap() < source_modified) {
         env::set_var("OPT_LEVEL", "2");
 
+        let mut cc_build = cc::Build::new();
+
+        // The 'host' and 'target' options are required to compile.
+        // They can be provided using the HOST and TARGET environment variables.
+        // On Linux, these environment variables can be empty strings, but it's not the case on macOS.
+        let host = std::env::var("HOST").unwrap_or("".to_string());
+        if host == "" {
+            cc_build.host(current_platform::CURRENT_PLATFORM);
+        }
+        let target = std::env::var("TARGET").unwrap_or("".to_string());
+        if target == "" {
+            cc_build.target(current_platform::CURRENT_PLATFORM);
+        }
+
         cc_utils::ImprovedBuild::new()
+            .set_cc_builder(cc_build)
             .file("mock_php_syms.c")
             .link_dynamically("dl")
             .warnings(true)