Release: Do relative rpaths only on Linux

Relative rpaths option uses patchelf, which is not available on macOS.

Signed-off-by: Anton Kolesov <[email protected]>

Author: anthony-kolesov

release.mk

@@ -202,9 +202,14 @@ endef
 # Build flags common to all toolchains
 #
 
-BUILDALLFLAGS := --disable-werror --strip --rel-rpaths --no-auto-pull \
+BUILDALLFLAGS := --disable-werror --strip --no-auto-pull \
 --no-auto-checkout --elf32-strip-target-libs
 
+# Relative paths require patchelf, not present on macOS.
+ifneq ($(HOST),macos)
+BUILDALLFLAGS += --rel-rpaths
+endif
+
 EXTRA_CONFIG_FLAGS += --with-python=no
 ifeq ($(CONFIG_STATIC_TOOLCHAIN),y)
 EXTRA_CONFIG_FLAGS += LDFLAGS=-static