From 9d2215976c0d5323e108b7d865273f1b81967559 Mon Sep 17 00:00:00 2001
From: Felix Fietkau <nbd@nbd.name>
Date: Thu, 27 Jan 2022 13:25:39 +0100
Subject: [PATCH] tools: build bash on macOS and use it for ipkg-build

On macOS, system binaries silently drop the environment variables for injecting
extra shared libraries (used by fakeroot). This is done for security reasons.
Work around this by building bash from source, so that it gets an ad-hoc signature
and does not have these restrictions

Signed-off-by: Felix Fietkau <nbd@nbd.name>
---
 include/package-ipkg.mk |  2 +-
 tools/Makefile          |  3 +++
 tools/bash/Makefile     | 21 +++++++++++++++++++++
 3 files changed, 25 insertions(+), 1 deletion(-)
 create mode 100644 tools/bash/Makefile

diff --git a/include/package-ipkg.mk b/include/package-ipkg.mk
index 19f09c231..18c68da01 100644
--- a/include/package-ipkg.mk
+++ b/include/package-ipkg.mk
@@ -263,7 +263,7 @@ $(_endef)
     endif
 
 	$(INSTALL_DIR) $$(PDIR_$(1))
-	$(FAKEROOT) $(SCRIPT_DIR)/ipkg-build -m "$(FILE_MODES)" $$(IDIR_$(1)) $$(PDIR_$(1))
+	$(FAKEROOT) $(STAGING_DIR_HOST)/bin/bash $(SCRIPT_DIR)/ipkg-build -m "$(FILE_MODES)" $$(IDIR_$(1)) $$(PDIR_$(1))
 	@[ -f $$(IPKG_$(1)) ]
 
     $(1)-clean:
diff --git a/tools/Makefile b/tools/Makefile
index c3d9980c3..08e882fc0 100644
--- a/tools/Makefile
+++ b/tools/Makefile
@@ -82,6 +82,9 @@ ifneq ($(HOST_OS),Linux)
   $(curdir)/squashfskit4/compile += $(curdir)/coreutils/compile
   tools-y += coreutils
 endif
+ifeq ($(HOST_OS),Darwin)
+  tools-y += bash
+endif
 
 ifneq ($(CONFIG_CCACHE)$(CONFIG_SDK),)
 $(foreach tool, $(filter-out xz zstd patch pkgconf libressl ninja cmake,$(tools-y)), $(eval $(curdir)/$(tool)/compile += $(curdir)/ccache/compile))
diff --git a/tools/bash/Makefile b/tools/bash/Makefile
new file mode 100644
index 000000000..7c25b8332
--- /dev/null
+++ b/tools/bash/Makefile
@@ -0,0 +1,21 @@
+#
+# Copyright (C) 2015 OpenWrt.org
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=bash
+PKG_CPE_ID:=cpe:/a:gnu:bash
+PKG_VERSION:=5.1.16
+
+PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
+PKG_SOURCE_URL:=@GNU/bash
+PKG_HASH:=5bac17218d3911834520dad13cd1f85ab944e1c09ae1aba55906be1f8192f558
+
+HOST_BUILD_PARALLEL := 1
+
+include $(INCLUDE_DIR)/host-build.mk
+
+$(eval $(call HostBuild))