#!/usr/bin/make -f
export DH_OPTIONS

DEB_HOST_GNU_TYPE ?= $(shell dpkg-architecture -qDEB_HOST_GNU_TYPE)
DEB_BUILD_GNU_TYPE ?= $(shell dpkg-architecture -qDEB_BUILD_GNU_TYPE)
DEB_HOST_GNU_CPU ?= $(shell dpkg-architecture -qDEB_HOST_GNU_CPU)
DEB_HOST_ARCH_OS ?= $(shell dpkg-architecture -qDEB_HOST_ARCH_OS)
DEB_HOST_ARCH ?= $(shell dpkg-architecture -qDEB_HOST_ARCH)

# Calculating musl based architecture
MUSL_SUBARCH=$(DEB_HOST_GNU_CPU)
ifeq ($(DEB_HOST_GNU_CPU),arm)
  ifeq ($(DEB_HOST_ARCH),armel)
     MUSL_ARCH=arm-$(DEB_HOST_ARCH_OS)-musleabi
  endif
  ifeq ($(DEB_HOST_ARCH),armhf)
     MUSL_ARCH=arm-$(DEB_HOST_ARCH_OS)-musleabihf
     MUSL_SUBARCH=armhf
  endif
else
  MUSL_ARCH=$(DEB_HOST_GNU_CPU)-$(DEB_HOST_ARCH_OS)-musl
endif

# Cross build support
ifeq ($(DEB_BUILD_GNU_TYPE),$(DEB_HOST_GNU_TYPE))  
  CC ?= cc
else
  CC=$(DEB_HOST_GNU_TYPE)-gcc
  CROSS_COMPILE=$(DEB_HOST_GNU_TYPE)-
  export CROSS_COMPILE
endif
export CC

# Clear variables to make musl happy
CFLAGS=
CPPFLAGS=
LDFLAGS=
export CFLAGS
export CPPFLAGS
export LDFLAGS

# Export Variables for dh-exec script
export MUSL_ARCH
export MUSL_SUBARCH
export DEB_HOST_GNU_CPU

%:
	dh $@ --parallel

debian/scripts/$(MUSL_ARCH).path: debian/scripts/config.path.in
	sed 's/@MUSL_ARCH@/$(MUSL_ARCH)/g' $< > $@

debian/scripts/ld-musl-config: debian/scripts/ld-musl-config.in
	sed 's/@MUSL_SUBARCH@/$(MUSL_SUBARCH)/g' $< > $@
	chmod +x debian/scripts/ld-musl-config

override_dh_auto_configure: debian/scripts/$(MUSL_ARCH).path debian/scripts/ld-musl-config
	dh_auto_configure -- --libdir=/usr/lib/$(MUSL_ARCH) --includedir=/usr/include/$(MUSL_ARCH) --host=$(DEB_HOST_GNU_TYPE)

override_dh_fixperms:
	dh_fixperms --exclude libc.so

