Allow overriding ar param prefix in library/Makefile
diff --git a/library/Makefile b/library/Makefile
index 633038e..39bc24d 100644
--- a/library/Makefile
+++ b/library/Makefile
@@ -38,6 +38,10 @@
# Set DLEXT=dylib to compile as a shared library for Mac OS X
DLEXT ?= so
+# Set AR_DASH= (empty string) to use an ar implentation that does not accept
+# the - prefix for command line options (e.g. llvm-ar)
+AR_DASH ?= -
+
# Windows shared library extension:
ifdef WINDOWS_BUILD
DLEXT=dll
@@ -90,9 +94,9 @@
# tls
libmbedtls.a: $(OBJS_TLS)
echo " AR $@"
- $(AR) -rc $@ $(OBJS_TLS)
+ $(AR) $(AR_DASH)rc $@ $(OBJS_TLS)
echo " RL $@"
- $(AR) -s $@
+ $(AR) $(AR_DASH)s $@
libmbedtls.$(SOEXT_TLS): $(OBJS_TLS) libmbedx509.so
echo " LD $@"
@@ -113,9 +117,9 @@
# x509
libmbedx509.a: $(OBJS_X509)
echo " AR $@"
- $(AR) -rc $@ $(OBJS_X509)
+ $(AR) $(AR_DASH)rc $@ $(OBJS_X509)
echo " RL $@"
- $(AR) -s $@
+ $(AR) $(AR_DASH)s $@
libmbedx509.$(SOEXT_X509): $(OBJS_X509) libmbedcrypto.so
echo " LD $@"
@@ -136,9 +140,9 @@
# crypto
libmbedcrypto.a: $(OBJS_CRYPTO)
echo " AR $@"
- $(AR) -rc $@ $(OBJS_CRYPTO)
+ $(AR) $(AR_DASH)rc $@ $(OBJS_CRYPTO)
echo " RL $@"
- $(AR) -s $@
+ $(AR) $(AR_DASH)s $@
libmbedcrypto.$(SOEXT_CRYPTO): $(OBJS_CRYPTO)
echo " LD $@"