diff --git a/android/build.py b/android/build.py
index aa4f8b193..509cf85a4 100755
--- a/android/build.py
+++ b/android/build.py
@@ -100,6 +100,7 @@ class AndroidNdkToolchain:
         common_flags += ' -fvisibility=hidden -fdata-sections -ffunction-sections'
 
         self.ar = os.path.join(llvm_bin, 'llvm-ar')
+        self.arflags = 'rcs'
         self.ranlib = os.path.join(llvm_bin, 'llvm-ranlib')
         self.nm = os.path.join(llvm_bin, 'llvm-nm')
         self.strip = os.path.join(llvm_bin, 'llvm-strip')
diff --git a/python/build/autotools.py b/python/build/autotools.py
index cf9125439..46fbd273b 100644
--- a/python/build/autotools.py
+++ b/python/build/autotools.py
@@ -45,6 +45,7 @@ class AutotoolsProject(MakeProject):
             'LDFLAGS=' + toolchain.ldflags + ' ' + self.ldflags,
             'LIBS=' + toolchain.libs + ' ' + self.libs,
             'AR=' + toolchain.ar,
+            'ARFLAGS=' + toolchain.arflags,
             'RANLIB=' + toolchain.ranlib,
             'STRIP=' + toolchain.strip,
             '--host=' + toolchain.arch,
diff --git a/win32/build.py b/win32/build.py
index f29d75302..494969792 100755
--- a/win32/build.py
+++ b/win32/build.py
@@ -48,6 +48,7 @@ class CrossGccToolchain:
         self.cc = os.path.join(toolchain_bin, arch + '-gcc')
         self.cxx = os.path.join(toolchain_bin, arch + '-g++')
         self.ar = os.path.join(toolchain_bin, arch + '-ar')
+        self.arflags = 'rcs'
         self.ranlib = os.path.join(toolchain_bin, arch + '-ranlib')
         self.nm = os.path.join(toolchain_bin, arch + '-nm')
         self.strip = os.path.join(toolchain_bin, arch + '-strip')