diff --git a/crypto/bf/Makefile.ssl b/crypto/bf/Makefile.ssl
index 8da7c14e3e331d70633ae2d429d887d44b06754e..1bb56887a5f9c15aceb0ba4f1f852abae912b3a0 100644
--- a/crypto/bf/Makefile.ssl
+++ b/crypto/bf/Makefile.ssl
@@ -49,7 +49,7 @@ lib:	$(LIBOBJ)
 
 # elf
 asm/bx86-elf.o: asm/bx86unix.cpp
-	$(CPP) -DELF asm/bx86unix.cpp | as -o asm/bx86-elf.o
+	$(CPP) -DELF -x c asm/bx86unix.cpp | as -o asm/bx86-elf.o
 
 # solaris
 asm/bx86-sol.o: asm/bx86unix.cpp
diff --git a/crypto/bn/Makefile.ssl b/crypto/bn/Makefile.ssl
index c1edf52bb06fd1bee4775daf7b671a79d6ef9c3b..29ca88ccd57fbbaf065ae7c5aa2c136aa6b498ec 100644
--- a/crypto/bn/Makefile.ssl
+++ b/crypto/bn/Makefile.ssl
@@ -72,10 +72,10 @@ lib:	$(LIBOBJ)
 
 # elf
 asm/bn86-elf.o: asm/bn86unix.cpp
-	$(CPP) -DELF asm/bn86unix.cpp | as -o asm/bn86-elf.o
+	$(CPP) -DELF -x c asm/bn86unix.cpp | as -o asm/bn86-elf.o
 
 asm/co86-elf.o: asm/co86unix.cpp
-	$(CPP) -DELF asm/co86unix.cpp | as -o asm/co86-elf.o
+	$(CPP) -DELF -x c asm/co86unix.cpp | as -o asm/co86-elf.o
 
 # solaris
 asm/bn86-sol.o: asm/bn86unix.cpp
diff --git a/crypto/cast/Makefile.ssl b/crypto/cast/Makefile.ssl
index 8ff8590cd8625f33e6ada39546144b2f9c71a46b..afba084e8bbf2e0943121b473f509f2fd322b135 100644
--- a/crypto/cast/Makefile.ssl
+++ b/crypto/cast/Makefile.ssl
@@ -52,7 +52,7 @@ lib:	$(LIBOBJ)
 
 # elf
 asm/cx86-elf.o: asm/cx86unix.cpp
-	$(CPP) -DELF asm/cx86unix.cpp | as -o asm/cx86-elf.o
+	$(CPP) -DELF -x c asm/cx86unix.cpp | as -o asm/cx86-elf.o
 
 # solaris
 asm/cx86-sol.o: asm/cx86unix.cpp
diff --git a/crypto/des/Makefile.ssl b/crypto/des/Makefile.ssl
index 88cd1ab1142a8504a3bb65cd1af4416c2751f9cf..92153d154070ec811c8c2dc55042a17ef8571912 100644
--- a/crypto/des/Makefile.ssl
+++ b/crypto/des/Makefile.ssl
@@ -65,10 +65,10 @@ des: des.o cbc3_enc.o lib
 
 # elf
 asm/dx86-elf.o: asm/dx86unix.cpp
-	$(CPP) -DELF asm/dx86unix.cpp | as -o asm/dx86-elf.o
+	$(CPP) -DELF -x c asm/dx86unix.cpp | as -o asm/dx86-elf.o
 
 asm/yx86-elf.o: asm/yx86unix.cpp
-	$(CPP) -DELF asm/yx86unix.cpp | as -o asm/yx86-elf.o
+	$(CPP) -DELF -x c asm/yx86unix.cpp | as -o asm/yx86-elf.o
 
 # solaris
 asm/dx86-sol.o: asm/dx86unix.cpp
diff --git a/crypto/md5/Makefile.ssl b/crypto/md5/Makefile.ssl
index 3627d9475dd64627df05d1fce6c48f42f2ac6a6b..2c0489d48ef0d801f34cacfd73e15728f8de991e 100644
--- a/crypto/md5/Makefile.ssl
+++ b/crypto/md5/Makefile.ssl
@@ -55,7 +55,7 @@ lib:    $(LIBOBJ)
 
 # elf
 asm/mx86-elf.o: asm/mx86unix.cpp
-	$(CPP) -DELF asm/mx86unix.cpp | as -o asm/mx86-elf.o
+	$(CPP) -DELF -x c asm/mx86unix.cpp | as -o asm/mx86-elf.o
 
 # solaris
 asm/mx86-sol.o: asm/mx86unix.cpp
diff --git a/crypto/rc4/Makefile.ssl b/crypto/rc4/Makefile.ssl
index d92750af0568efce6b2afee530caf2c78cf473ef..d3dff0f4a13ea3680a6f7f26d6b3d0d7586c53d8 100644
--- a/crypto/rc4/Makefile.ssl
+++ b/crypto/rc4/Makefile.ssl
@@ -51,7 +51,7 @@ lib:	$(LIBOBJ)
 
 # elf
 asm/rx86-elf.o: asm/rx86unix.cpp
-	$(CPP) -DELF asm/rx86unix.cpp | as -o asm/rx86-elf.o
+	$(CPP) -DELF -x c asm/rx86unix.cpp | as -o asm/rx86-elf.o
 
 # solaris
 asm/rx86-sol.o: asm/rx86unix.cpp
diff --git a/crypto/rc5/Makefile.ssl b/crypto/rc5/Makefile.ssl
index 695870f4a87c3c07076fa278bde5fc457d097107..3d168560296904af2265700a2a5cf0a822a41ed5 100644
--- a/crypto/rc5/Makefile.ssl
+++ b/crypto/rc5/Makefile.ssl
@@ -49,7 +49,7 @@ lib:	$(LIBOBJ)
 
 # elf
 asm/r586-elf.o: asm/r586unix.cpp
-	$(CPP) -DELF asm/r586unix.cpp | as -o asm/r586-elf.o
+	$(CPP) -DELF -x c asm/r586unix.cpp | as -o asm/r586-elf.o
 
 # solaris
 asm/r586-sol.o: asm/r586unix.cpp
diff --git a/crypto/ripemd/Makefile.ssl b/crypto/ripemd/Makefile.ssl
index 18ab4a5186a6af9c0030e93b9f6c5f62e64766bd..79948bb69b4b6d4a7195ab888cab1f849417515c 100644
--- a/crypto/ripemd/Makefile.ssl
+++ b/crypto/ripemd/Makefile.ssl
@@ -47,7 +47,7 @@ lib:    $(LIBOBJ)
 
 # elf
 asm/rm86-elf.o: asm/rm86unix.cpp
-	$(CPP) -DELF asm/rm86unix.cpp | as -o asm/rm86-elf.o
+	$(CPP) -DELF -x c asm/rm86unix.cpp | as -o asm/rm86-elf.o
 
 # solaris
 asm/rm86-sol.o: asm/rm86unix.cpp
diff --git a/crypto/sha/Makefile.ssl b/crypto/sha/Makefile.ssl
index b10406437cfd44780573fa7d5262678651d5bccf..d30e7244c04466b1c1037bc6a9871381c2f7de93 100644
--- a/crypto/sha/Makefile.ssl
+++ b/crypto/sha/Makefile.ssl
@@ -46,7 +46,7 @@ lib:    $(LIBOBJ)
 
 # elf
 asm/sx86-elf.o: asm/sx86unix.cpp
-	$(CPP) -DELF asm/sx86unix.cpp | as -o asm/sx86-elf.o
+	$(CPP) -DELF -x c asm/sx86unix.cpp | as -o asm/sx86-elf.o
 
 # solaris
 asm/sx86-sol.o: asm/sx86unix.cpp