LICENSE   := LGPLv2.1+
VERSION   := 1.8.2
DOWNLOADS := libgcrypt.archive libgpg-error.archive

COMMON_URL := https://www.gnupg.org/ftp/gcrypt

URL(libgcrypt) := $(COMMON_URL)/libgcrypt/libgcrypt-$(VERSION).tar.bz2
SHA(libgcrypt) := ab8aae5d7a68f8e0988f90e11e7f6a4805af5c8d
DIR(libgcrypt) := src/lib/libgcrypt

LIBGPG_ERROR_VERSION := 1.27

URL(libgpg-error) := $(COMMON_URL)/libgpg-error/libgpg-error-$(LIBGPG_ERROR_VERSION).tar.bz2
SHA(libgpg-error) := a428758999ff573e62d06892e3d2c0b0f335787c
DIR(libgpg-error) := src/lib/libgpg-error

HASH_INPUT += $(REP_DIR)/src/lib/libgpg-error/config.h

$(call check_tool,mawk)

gen_files := include/libgcrypt/gcrypt.h \
             include/libgcrypt/gpg-error.h \
             src/lib/libgpg-error/src/code-from-errno.h \
             src/lib/libgpg-error/src/code-to-errno.h

default: $(gen_files)

$(gen_files): $(DOWNLOADS)

# obtain 'VERSION_NUMBER' definition from configure script
version_number = $(shell sed -n "/VERSION_NUMBER=/s/.*=//p" $1/configure)

subst_gcrypt = \
	"@INSERT_SYS_SELECT_H@/include <sys\/select.h>" \
	"@FALLBACK_SOCKLEN_T@/" \
	"@VERSION@/\"$(VERSION)\"" \
	"@VERSION_NUMBER@/$(call version_number,src/lib/libgcrypt)"

apply_substitutions = $(VERBOSE)for i in $(1); do sed -i "s/$$i/g" $(2); done

include/libgcrypt/gcrypt.h:
	@$(MSG_GENERATE)$@
	$(VERBOSE)mkdir -p $(dir $@)
	$(VERBOSE)cp src/lib/libgcrypt/src/gcrypt.h.in $@
	$(call apply_substitutions,$(subst_gcrypt),$@)

include/libgcrypt/gpg-error.h: mkheader
	@$(MSG_GENERATE)$@
	$(VERBOSE)mkdir -p $(dir $@)
	$(VERBOSE)cp src/lib/libgpg-error/src/syscfg/lock-obj-pub.x86_64-pc-kfreebsd-gnu.h \
	             lock-obj-pub.native.h
	$(VERBOSE)./mkheader unknown-host-os host-triplet-unknown \
	                     src/lib/libgpg-error/src/gpg-error.h.in \
	                     $(REP_DIR)/src/lib/libgpg-error/config.h \
	                     $(LIBGPG_ERROR_VERSION) $(call version_number,src/lib/libgpg-error) >$@
	$(VERBOSE)rm lock-obj-pub.native.h mkheader

src/lib/libgpg-error/src/code-from-errno.h: mkerrcodes
	@$(MSG_GENERATE)$@
	$(VERBOSE)mkdir -p $(dir $@)
	$(VERBOSE)./mkerrcodes | nawk -f src/lib/libgpg-error/src/mkerrcodes2.awk > $@
	$(VERBOSE)rm mkerrcodes

src/lib/libgpg-error/src/code-to-errno.h:
	@$(MSG_GENERATE)$@
	$(VERBOSE)nawk -f src/lib/libgpg-error/src/mkerrnos.awk src/lib/libgpg-error/src/errnos.in > $@

mkheader: $(DOWNLOADS)
	$(VERBOSE)$(CC) -g -Isrc/lib/libgpg-error/src \
	                src/lib/libgpg-error/src/mkheader.c -o $@

mkerrcodes: $(DOWNLOADS) src/lib/libgpg-error/src/mkerrcodes.h
	$(VERBOSE)$(CC) -g -Isrc/lib/libgpg-error/src \
	                src/lib/libgpg-error/src/mkerrcodes.c -o $@

src/lib/libgpg-error/src/mkerrcodes.h:
	@$(MSG_GENERATE)$@
	$(VERBOSE)nawk -f src/lib/libgpg-error/src/mkerrcodes1.awk \
	                  src/lib/libgpg-error/src/errnos.in |\
	          $(CPP) -P - |\
	          grep GPG_ERR_ |\
	          nawk -f src/lib/libgpg-error/src/mkerrcodes.awk > $@