rework prereq check

The new prereq check is completely implemented in
POSIX shell in scripts/prereq.sh.

It combines the old features from Makefile, scan-tools.sh,
scan-pkgs.sh, reloc.sh and some wrappers for tools.

The big benefit is to have all portability stuff in one place.
Furthermore we can compile GNU make and bash on the fly, for
systems lacking the required tools.
All changes on the host are detected on the fly, no make
prereq required anymore.

The build process is separated in following three phases:
1. small wrapper Makefile is used for BSD make or GNU make
2. prereq.sh is called, doing all checking, calling Makefile.adk
3. old logic in Makefile.adk or mk/build.mk is used

Tested successfully on Linux, MacOS X, Cygwin, FreeBSD, OpenBSD
and NetBSD.

An old depmaker bug was fixed, only optional host tools are compiled.
For example, even when a host provides xz, a local xz was compiled
in the past, because other packages had a build dependency on it.

Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>

4 files changed, 14 insertions, 35 deletions

diff --git a/target/Makefile b/target/Makefile
index d6cfa0bf8..180f5f05e 100644
--- a/target/Makefile
+++ b/target/Makefile
@@ -122,19 +122,25 @@ install: $(ADK_TARGET_ARCH)-imageclean $(ADK_TARGET_ARCH)-install $(ADK_TARGET_A
 clean: $(ADK_TARGET_ARCH)-clean $(ADK_TARGET_ARCH)-imageclean
 
 %-clean:
-	$(TRACE) target/$(patsubst %-clean,%,$@)-clean
+	$(START_TRACE) "target/$(patsubst %-clean,%,$@)-clean.. "
 	$(MAKE) -C $(patsubst %-clean,%,$@) clean
+	$(CMD_TRACE) " done"
+	$(END_TRACE)
 
 %-imageclean:
-	$(TRACE) target/$(patsubst %-imageclean,%,$@)-imageclean
+	$(START_TRACE) "target/$(patsubst %-imageclean,%,$@)-imageclean.. "
 	$(MAKE) -C $(patsubst %-imageclean,%,$@) imageclean
+	$(CMD_TRACE) " done"
+	$(END_TRACE)
 
 %-prepare:
-	$(TRACE) target/$(patsubst %-prepare,%,$@)-prepare
+	$(START_TRACE) "target/$(patsubst %-prepare,%,$@)-prepare.. "
 	$(MAKE) -C $(patsubst %-prepare,%,$@) prepare
+	$(CMD_TRACE) " done"
+	$(END_TRACE)
 
 %-imageprepare:
-	$(TRACE) target/$(patsubst %-imageprepare,%,$@)-imageprepare
+	$(START_TRACE) "target/$(patsubst %-imageprepare,%,$@)-imageprepare.. "
 ifeq ($(ADK_RUNTIME_DEV_UDEV),y)
 	# This should be made a package instead
 	$(CP) -a $(BUILD_DIR)/linux-$(ADK_TARGET_ARCH)/modules/lib $(TARGET_DIR)
@@ -146,20 +152,19 @@ endif
 		break; \
 	done
 	$(MAKE) -C $(patsubst %-imageprepare,%,$@) imageprepare
+	$(CMD_TRACE) " done"
+	$(END_TRACE)
 
 %-compile: %-prepare
-	$(TRACE) target/$(patsubst %-compile,%,$@)-compile
 	$(MAKE) -C $(patsubst %-compile,%,$@) compile
 
 %-install: %-compile
-	$(TRACE) target/$(patsubst %-install,%,$@)-install
 	$(MAKE) -C $(patsubst %-install,%,$@) install
 
 %-targethelp:
 	$(MAKE) -C $(patsubst %-targethelp,%,$@) targethelp
 
 %-imageinstall: %-imageprepare
-	$(TRACE) target/$(patsubst %-imageinstall,%,$@)-imageinstall
 	$(MAKE) -C $(patsubst %-imageinstall,%,$@) imageinstall
 	@for x in $$(ls $(ADK_TOPDIR)/scripts/postimage/*.sh 2>/dev/null); do \
 		[[ -x "$$x" ]] && $$x; \
diff --git a/target/config/Config.in.adk b/target/config/Config.in.adk
index 510809ce5..81144dc02 100644
--- a/target/config/Config.in.adk
+++ b/target/config/Config.in.adk
@@ -101,31 +101,6 @@ config ADK_TARGET_PORT
 	help
 	  Port to use for SSH when running make check.
 
-choice 
-prompt "Hostsystem (do not change!)"
-config ADK_HOST_LINUX
-	bool "Linux"
-
-config ADK_HOST_FREEBSD
-	bool "FreeBSD"
-
-config ADK_HOST_MIRBSD
-	bool "MirBSD"
-
-config ADK_HOST_OPENBSD
-	bool "OpenBSD"
-
-config ADK_HOST_NETBSD
-	bool "NetBSD"
-
-config ADK_HOST_DARWIN
-	bool "Darwin"
-
-config ADK_HOST_CYGWIN
-	bool "Cygwin"
-
-endchoice
-
 config ADK_PRELINK
 	prompt "Prelink binaries and libraries in Image"
 	boolean
diff --git a/target/config/Config.in.target b/target/config/Config.in.target
index 3c396f37e..4d1888c35 100644
--- a/target/config/Config.in.target
+++ b/target/config/Config.in.target
@@ -131,7 +131,6 @@ config ADK_TARGET_ROOTFS_ISO
 	select ADK_HOST_NEED_CDRTOOLS
 	select ADK_HOST_NEED_SYSLINUX
 	select ADK_TARGET_QEMU_WITH_BLOCK if ADK_TARGET_QEMU
-	depends on ADK_HOST_LINUX
 	depends on ADK_TARGET_ARCH_X86
 	help
 	  Use this option to create a bootable ISO image.
diff --git a/target/config/Config.in.tools b/target/config/Config.in.tools
index 702eea651..d8bec818d 100644
--- a/target/config/Config.in.tools
+++ b/target/config/Config.in.tools
@@ -37,11 +37,11 @@ config ADK_HOST_BUILD_LIBTOOL
 
 config ADK_HOST_BUILD_LIBRESSL
 	bool
-	default y
+	default n
 
 config ADK_HOST_BUILD_WGET
 	bool
-	default y
+	default n
 
 # always required, but can be provided by host
 config ADK_HOST_BUILD_BASH