--- asterisk-13.3.2.orig/configure.ac
+++ asterisk-13.3.2/configure.ac
@@ -181,6 +181,9 @@
      linux-gnueabi* |  linux-gnuspe)
      OSARCH=linux-gnu
      ;;
+     linux-musl*)
+     OSARCH=linux-musl
+     ;;
      kfreebsd*-gnu)
      OSARCH=kfreebsd-gnu
      ;;
@@ -1328,9 +1331,11 @@
   AST_EXT_LIB_CHECK([BFD], [bfd], [bfd_check_format], [bfd.h], [-ldl -liberty -lz])
 fi
 
-if test "x${OSARCH}" = "xlinux-gnu" ; then
+case "${OSARCH}" in
+linux*)
   AST_EXT_LIB_CHECK([CAP], [cap], [cap_from_text], [sys/capability.h])
-fi
+  ;;
+esac
 
 AST_C_DEFINE_CHECK([DAHDI], [DAHDI_RESET_COUNTERS], [dahdi/user.h], [230])
 AST_C_DEFINE_CHECK([DAHDI], [DAHDI_DEFAULT_MTU_MRU], [dahdi/user.h], [220])
--- asterisk-13.3.2.orig/main/Makefile
+++ asterisk-13.3.2/main/Makefile
@@ -42,7 +42,7 @@
 AST_LIBS+=$(RT_LIB)
 AST_LIBS+=$(SYSTEMD_LIB)
 
-ifneq ($(findstring $(OSARCH), linux-gnu uclinux linux-uclibc kfreebsd-gnu),)
+ifneq ($(findstring $(OSARCH), linux-gnu uclinux linux-uclibc linux-musl kfreebsd-gnu),)
   AST_LIBS+=-ldl
   ifneq (x$(CAP_LIB),x)
     AST_LIBS+=$(CAP_LIB)