Symlink 7z when USE_SYSTEM_P7ZIP (JuliaLang#43005)

* Symlink 7z

* Simplify

Co-authored-by: Elliot Saba <[email protected]>

Co-authored-by: Elliot Saba <[email protected]>

Author: 2 people

base/Makefile

@@ -185,6 +185,19 @@ SYMLINK_SYSTEM_LIBRARIES += symlink_$2
 endif
 endef
 
+# libexec executables
+symlink_p7zip: $(build_bindir)/7z$(EXE)
+
+ifneq ($(USE_SYSTEM_P7ZIP),0)
+SYMLINK_SYSTEM_LIBRARIES += symlink_p7zip
+7Z_PATH := $(shell which 7z$(EXE))
+endif
+
+$(build_bindir)/7z$(EXE):
+	[ -e "$(7Z_PATH)" ] && \
+	([ ! -e "$@" ] || rm "$@") && \
+	ln -svf "$(7Z_PATH)" "$@"
+
 # the following excludes: libuv.a, libutf8proc.a
 
 ifneq ($(USE_SYSTEM_LIBM),0)