diff --git a/contrib/jemalloc/include/jemalloc/jemalloc_FreeBSD.h b/contrib/jemalloc/include/jemalloc/jemalloc_FreeBSD.h
--- a/contrib/jemalloc/include/jemalloc/jemalloc_FreeBSD.h
+++ b/contrib/jemalloc/include/jemalloc/jemalloc_FreeBSD.h
@@ -63,9 +63,11 @@
 #ifdef __powerpc64__
 #  define LG_VADDR		64
 #  define LG_SIZEOF_PTR		3
+#  define JEMALLOC_TLS_MODEL	__attribute__((tls_model("initial-exec")))
 #elif defined(__powerpc__)
 #  define LG_VADDR		32
 #  define LG_SIZEOF_PTR		2
+#  define JEMALLOC_TLS_MODEL	__attribute__((tls_model("initial-exec")))
 #endif
 #ifdef __riscv
 #  define LG_VADDR		48
diff --git a/lib/libc/Makefile b/lib/libc/Makefile
--- a/lib/libc/Makefile
+++ b/lib/libc/Makefile
@@ -32,7 +32,7 @@
 LIB=c
 SHLIB_MAJOR= 7
 .if ${MK_SSP} != "no" && \
-    (${LIBC_ARCH} == "i386" || ${MACHINE_ARCH:Mpower*} != "")
+    (${LIBC_ARCH} == "i386" || ${LIBC_ARCH:Mpowerpc*} != "")
 SHLIB_LDSCRIPT=libc.ldscript
 .else
 SHLIB_LDSCRIPT=libc_nossp.ldscript
@@ -57,7 +57,8 @@
 # Use a more efficient TLS model for libc since we can reasonably assume that
 # it will be loaded during program startup.
 .if ${LIBC_ARCH} == "aarch64" || ${LIBC_ARCH} == "amd64" || \
-    ${LIBC_ARCH} == "i386" || ${LIBC_ARCH} == "riscv"
+    ${LIBC_ARCH} == "i386" || ${LIBC_ARCH} == "riscv" || \
+    ${LIBC_ARCH:Mpowerpc*} != ""
 CFLAGS+= -ftls-model=initial-exec
 .endif
 
@@ -68,7 +69,7 @@
 LIBADD+=	compiler_rt
 
 .if ${MK_SSP} != "no" && \
-    (${LIBC_ARCH} == "i386" || ${MACHINE_ARCH:Mpower*} != "")
+    (${LIBC_ARCH} == "i386" || ${LIBC_ARCH:Mpowerpc*} != "")
 LIBADD+=	ssp_nonshared
 .endif