[openwrt/openwrt] tools/libelf: use autoreconf to fix build failure on macOS with recent Xcode versions

[LEDE Commits]

nbd pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/a99f88a1866ec082ab635db31a90de618840b165

commit a99f88a1866ec082ab635db31a90de618840b165
Author: Felix Fietkau <nbd at nbd.name>
AuthorDate: Sat Nov 14 12:47:39 2020 +0100

    tools/libelf: use autoreconf to fix build failure on macOS with recent Xcode versions
    
    Signed-off-by: Felix Fietkau <nbd at nbd.name>
---
 tools/libelf/Makefile | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tools/libelf/Makefile b/tools/libelf/Makefile
index 9fec8308b5..726c4776bf 100644
--- a/tools/libelf/Makefile
+++ b/tools/libelf/Makefile
@@ -18,8 +18,12 @@ PKG_SOURCE_URL:= \
 	http://distcache.freebsd.org/ports-distfiles/
 HOST_BUILD_PARALLEL:=1
 
+HOST_FIXUP:=autoreconf
+
 include $(INCLUDE_DIR)/host-build.mk
 
+PKG_REMOVE_FILES :=
+
 HOST_CONFIGURE_ARGS += \
 	--disable-shared \
 	--enable-elf64