+# To install it, we just copy ghc and ghc-pkg from
+# "work/bootstrap/ghc-${VERSION}/inplace/bin" to
+# "${BUILDLINK_DIR}/bin". Note that in-place ghc isn't usable before
+# running "ghc-pkg recache".
+
+.if ${MACHINE_ARCH} == "i386" && ${OPSYS} == "NetBSD"
+BOOTSTRAP_BUILD_MK = ${PKGDIR}/files/bootstrap-bsd.mk
+PLATFORM = i386-unknown-netbsd
+
+.elif ${MACHINE_ARCH} == "i386" && ${OPSYS} == "FreeBSD"
+BOOTSTRAP_BUILD_MK = ${PKGDIR}/files/bootstrap-bsd.mk
+PLATFORM = i386-unknown-freebsd
+
+.elif ${MACHINE_ARCH} == "powerpc" && ${OPSYS} == "Darwin"
+BOOTSTRAP_BUILD_MK = ${PKGDIR}/files/bootstrap.mk
+PLATFORM = powerpc-apple-darwin
+
+# Existence of libelf makes LeadingUnderscore being "NO", which is
+# incorrect. See ghc-6.12.1/aclocal.m4 (FP_LEADING_UNDERSCORE)
+CONFLICTS= libelf-[0-9]*
+
+.else
+PKG_FAIL_REASON+= "internal error: unsupported platform"
+.endif
+
+BOOTSTRAP_TARBALL = ${DISTNAME}-boot-${PLATFORM}.tar.bz2
+
+pre-configure: ${WRKDIR}/stamp-bootstrap-ghc
+
+${WRKDIR}/stamp-prepare-bootstrap:
+ ${RUN} cd ${WRKDIR} && \
+ ${ECHO} "====> Preparing bootstrap compiler" && \
+ ${RM} -rf bootstrap && \
+ ${MKDIR} bootstrap && \
+ ${CP} -r ${DISTNAME} bootstrap && \
+ cd bootstrap/${DISTNAME} && \
+ ${LN} -sf ${PWD_CMD} utils/ghc-pwd/ghc-pwd && \
+ ${TOUCH} $@
+
+${WRKDIR}/stamp-configure-hc-boot: ${WRKDIR}/stamp-prepare-bootstrap
+ ${RUN} cd ${WRKDIR}/bootstrap/${DISTNAME} && \
+ ${ECHO} "====> Configuring for bootstrap compiler" && \
+ ${SETENV} ${CONFIGURE_ENV} ./configure --enable-hc-boot --with-ghc="" ${CONFIGURE_ARGS} && \
+ ${TOUCH} $@
+
+${WRKDIR}/stamp-extract-hc: ${WRKDIR}/stamp-configure-hc-boot
+ ${RUN} cd ${WRKDIR}/bootstrap/${DISTNAME} && \
+ ${ECHO} "====> Extracting bootstrap HC archive" && \
+ (cd .. && bsdtar jxfm ${DISTDIR}/${BOOTSTRAP_TARBALL}) && \
+ ${SH} mkfiles && \
+ ${TOUCH} $@
+
+${WRKDIR}/stamp-rewrite-hc-paths: ${WRKDIR}/stamp-extract-hc
+ ${RUN} cd ${WRKDIR}/bootstrap/${DISTNAME} && \
+ ${ECHO} "====> Rewriting GHC source paths" && \
+ ${SED} -e "s#\\[\\[PREFIX\\]\\]#${PREFIX}#g" ${BOOTSTRAP_BUILD_MK} > mk/build.mk && \
+ for c in libraries/*/configure; do \
+ (cd `${DIRNAME} $$c` && ${SETENV} ${CONFIGURE_ENV} ${SH} configure ${CONFIGURE_ARGS}); \
+ done && \
+ for i in inplace/lib/package.conf.d/*.conf */*/package-data.mk */*/*/package-data.mk; do \
+ ${SED} -e "s#\\[\\[PREFIX\\]\\]#${PREFIX}#g" \
+ -e "s#\\[\\[GHC_SOURCE_PATH\\]\\]#`${PWD_CMD}`#g" $$i > $$i.tmp; \
+ ${MV} -f $$i.tmp $$i; \
+ done && \
+ ${TOUCH} -r inplace/lib/package.conf.d */*/package-data.mk */*/*/package-data.mk && \
+ ${TOUCH} $@
+
+${WRKDIR}/stamp-bootstrap-ghc: ${WRKDIR}/stamp-rewrite-hc-paths
+ ${RUN} cd ${WRKDIR}/bootstrap/${DISTNAME} && \
+ ${ECHO} "====> Building bootstrap compiler" && \
+ ${GMAKE} bootstrapping-files && \
+ ${GMAKE} all_ghc_stage2 && \
+ ${GMAKE} inplace/bin/ghc-pkg && \
+ ${GMAKE} inplace/lib/unlit && \
+ inplace/bin/ghc-pkg recache && \
+ ${CP} -f inplace/bin/ghc-stage2 ${BUILDLINK_DIR}/bin/ghc && \
+ ${CP} -f inplace/bin/ghc-pkg ${BUILDLINK_DIR}/bin/ghc-pkg && \
+ ${TOUCH} $@
+
+do-configure:
+ ${RUN} cd ${WRKSRC} && \
+ ${SETENV} ${CONFIGURE_ENV} ./configure ${CONFIGURE_ARGS}
+# We need to tell the libraries/integer-gmp/configure that libgmp is
+# in a non-standard path. Without that, the resulting GHC tries to
+# link programs by executing ld(1) without passing it -L${PREFIX}/lib.
+ ${RUN} ${ECHO} "libraries/integer-gmp_CONFIGURE_OPTS += \
+ --configure-option=--with-gmp-includes=${PREFIX}/include \
+ --configure-option=--with-gmp-libraries=${PREFIX}/lib" > ${WRKSRC}/mk/build.mk
+# The ncurses is also in a non-standard path.
+ ${RUN} ${ECHO} "libraries/terminfo_CONFIGURE_OPTS += \
+ --configure-option=--with-curses-includes=${PREFIX}/include \
+ --configure-option=--with-curses-libraries=${PREFIX}/lib" >> ${WRKSRC}/mk/build.mk
+# The ghc compiler does normally split the generated asm files into small