summaryrefslogtreecommitdiff
blob: 52ef720a87f46eb58a88b243fe0d45f8105138dc (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
# Copyright 1999-2019 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

EAPI="7"

inherit flag-o-matic toolchain-funcs

if [[ ${PV} == "9999" ]] ; then
	EGIT_REPO_URI="git://sourceware.org/git/newlib-cygwin.git"
	inherit git-r3
else
	SRC_URI="ftp://sourceware.org/pub/newlib/${P}.tar.gz"
	KEYWORDS="-* ~arm ~hppa ~m68k ~mips ~ppc ~ppc64 ~sh ~sparc ~x86"
fi

export CBUILD=${CBUILD:-${CHOST}}
export CTARGET=${CTARGET:-${CHOST}}
if [[ ${CTARGET} == ${CHOST} ]] ; then
	if [[ ${CATEGORY} == cross-* ]] ; then
		export CTARGET=${CATEGORY#cross-}
	fi
fi

DESCRIPTION="Newlib is a C library intended for use on embedded systems"
HOMEPAGE="https://sourceware.org/newlib/"

LICENSE="NEWLIB LIBGLOSS GPL-2"
SLOT="0"
IUSE="nls threads unicode headers-only nano"
RESTRICT="strip"

NEWLIBBUILD="${WORKDIR}/build"
NEWLIBNANOBUILD="${WORKDIR}/build.nano"
NEWLIBNANOTMPINSTALL="${WORKDIR}/nano_tmp_install"

# Adding -U_FORTIFY_SOURCE to conter the effect of Gentoo's
# auto-addition of _FORTIFY_SOURCE at gcc site: bug #656018#c4
# Currently newlib can't be built itself when _FORTIFY_SOURCE
# is set.
CFLAGS_FULL="-ffunction-sections -fdata-sections -U_FORTIFY_SOURCE"
CFLAGS_NANO="-Os -ffunction-sections -fdata-sections -U_FORTIFY_SOURCE"

pkg_setup() {
	# Reject newlib-on-glibc type installs
	if [[ ${CTARGET} == ${CHOST} ]] ; then
		case ${CHOST} in
			*-newlib|*-elf) ;;
			*) die "Use sys-devel/crossdev to build a newlib toolchain" ;;
		esac
	fi
}

src_configure() {
	# we should fix this ...
	unset LDFLAGS
	CHOST=${CTARGET} strip-unsupported-flags
	CCASFLAGS_ORIG="${CCASFLAGS}"
	CFLAGS_ORIG="${CFLAGS}"

	local myconf=(
		# Disable legacy syscall stub code in newlib.  These have been
		# moved to libgloss for a long time now, so the code in newlib
		# itself just gets in the way.
		--disable-newlib-supplied-syscalls
	)
	[[ ${CTARGET} == "spu" ]] \
		&& myconf+=( --disable-newlib-multithread ) \
		|| myconf+=( $(use_enable threads newlib-multithread) )

	mkdir -p "${NEWLIBBUILD}"
	cd "${NEWLIBBUILD}"

	export "CFLAGS_FOR_TARGET=${CFLAGS_ORIG} ${CFLAGS_FULL}"
	export "CCASFLAGS=${CCASFLAGS_ORIG} ${CFLAGS_FULL}"
	ECONF_SOURCE=${S} \
	econf \
		$(use_enable unicode newlib-mb) \
		$(use_enable nls) \
		"${myconf[@]}"

	# Build newlib-nano beside newlib (original)
	# Based on https://tracker.debian.org/media/packages/n/newlib/rules-2.1.0%2Bgit20140818.1a8323b-2
	if use nano ; then
		mkdir -p "${NEWLIBNANOBUILD}" || die
		cd "${NEWLIBNANOBUILD}" || die
		export "CFLAGS_FOR_TARGET=${CFLAGS_ORIG} ${CFLAGS_NANO}"
		export "CCASFLAGS=${CCASFLAGS_ORIG} ${CFLAGS_NANO}"
		ECONF_SOURCE=${S} \
		econf \
			$(use_enable unicode newlib-mb) \
			$(use_enable nls) \
			--enable-newlib-reent-small \
			--disable-newlib-fvwrite-in-streamio \
			--disable-newlib-fseek-optimization \
			--disable-newlib-wide-orient \
			--enable-newlib-nano-malloc \
			--disable-newlib-unbuf-stream-opt \
			--enable-lite-exit \
			--enable-newlib-global-atexit \
			--enable-newlib-nano-formatted-io \
			${myconf}
	fi
}

src_compile() {
	export "CFLAGS_FOR_TARGET=${CFLAGS_ORIG} ${CFLAGS_FULL}"
	export "CCASFLAGS=${CCASFLAGS_ORIG} ${CFLAGS_FULL}"
	emake -C "${NEWLIBBUILD}"

	if use nano ; then
		export "CFLAGS_FOR_TARGET=${CFLAGS_ORIG} ${CFLAGS_NANO}"
		export "CCASFLAGS=${CCASFLAGS_ORIG} ${CFLAGS_NANO}"
		emake -C "${NEWLIBNANOBUILD}"
	fi
}

src_install() {
	cd "${NEWLIBBUILD}" || die
	emake -j1 DESTDIR="${D}" install

	if use nano ; then
		cd "${NEWLIBNANOBUILD}" || die
		emake -j1 DESTDIR="${NEWLIBNANOTMPINSTALL}" install
		# Rename nano lib* files to lib*_nano and move to the real ${D}
		local nanolibfiles=""
		nanolibfiles=$(find "${NEWLIBNANOTMPINSTALL}" -regex ".*/lib\(c\|g\|rdimon\)\.a" -print)
		for f in ${nanolibfiles}; do
			local l="${f##${NEWLIBNANOTMPINSTALL}}"
			mv -v "${f}" "${D}/${l%%\.a}_nano.a" || die
		done

		# Move newlib-nano's version of newlib.h to newlib-nano/newlib.h
		mkdir -p "${D}/usr/${CTARGET}/include/newlib-nano" || die
		mv "${NEWLIBNANOTMPINSTALL}/usr/${CTARGET}/include/newlib.h" \
			"${D}/usr/${CTARGET}/include/newlib-nano/newlib.h" || die
	fi

	# minor hack to keep things clean
	rm -rf "${D}"/usr/share/info || die
	rm -rf "${D}"/usr/info || die
}