dev-lang/ocaml: build with gcc-10

Bug: https://bugs.gentoo.org/735274
Package-Manager: Portage-3.0.13, Repoman-3.0.2
Signed-off-by: Alfredo Tupone <tupone@gentoo.org>

2 files changed, 191 insertions, 0 deletions

diff --git a/dev-lang/ocaml/files/ocaml-4.05.0-gcc10.patch b/dev-lang/ocaml/files/ocaml-4.05.0-gcc10.patch
new file mode 100644
index 000000000000..a0c67da534a0
--- /dev/null
+++ b/dev-lang/ocaml/files/ocaml-4.05.0-gcc10.patch
@@ -0,0 +1,59 @@
+--- a/byterun/caml/intext.h	2021-01-28 22:46:20.400224678 +0100
++++ b/byterun/caml/intext.h	2021-01-28 22:46:49.312751054 +0100
+@@ -196,7 +196,7 @@
+ 
+ CAMLextern struct code_fragment * caml_extern_find_code(char *addr);
+ 
+-struct ext_table caml_code_fragments_table;
++extern struct ext_table caml_code_fragments_table;
+ 
+ #endif /* CAML_INTERNALS */
+ 
+--- a/byterun/caml/major_gc.h	2021-01-28 22:44:12.193323457 +0100
++++ b/byterun/caml/major_gc.h	2021-01-28 22:45:20.918198701 +0100
+@@ -64,9 +64,9 @@
+ extern char *caml_gc_sweep_hp;
+ 
+ extern int caml_major_window;
+-double caml_major_ring[Max_major_window];
+-int caml_major_ring_index;
+-double caml_major_work_credit;
++extern double caml_major_ring[Max_major_window];
++extern int caml_major_ring_index;
++extern double caml_major_work_credit;
+ extern double caml_gc_clock;
+ 
+ /* [caml_major_gc_hook] is called just between the end of the mark
+--- a/byterun/meta.c	2021-01-28 22:47:34.148016359 +0100
++++ b/byterun/meta.c	2021-01-28 22:47:56.048657393 +0100
+@@ -32,6 +32,8 @@
+ #include "caml/prims.h"
+ #include "caml/stacks.h"
+ 
++struct ext_table caml_code_fragments_table;
++
+ #ifndef NATIVE_CODE
+ 
+ CAMLprim value caml_get_global_data(value unit)
+--- a/byterun/backtrace.c	2021-01-28 22:50:25.275226598 +0100
++++ b/byterun/backtrace.c	2021-01-28 22:50:37.541027290 +0100
+@@ -28,7 +28,7 @@
+ #include "caml/fail.h"
+ 
+ /* The table of debug information fragments */
+-struct ext_table caml_debug_info;
++extern struct ext_table caml_debug_info;
+ 
+ CAMLexport int32_t caml_backtrace_active = 0;
+ CAMLexport int32_t caml_backtrace_pos = 0;
+--- a/asmrun/startup.c	2021-01-28 23:02:50.526072662 +0100
++++ b/asmrun/startup.c	2021-01-28 23:03:09.977754311 +0100
+@@ -44,7 +44,7 @@
+ #endif
+ 
+ extern int caml_parser_trace;
+-CAMLexport header_t caml_atom_table[256];
++CAMLextern header_t caml_atom_table[256];
+ char * caml_code_area_start, * caml_code_area_end;
+ 
+ /* Initialize the atom table and the static data and code area limits. */
diff --git a/dev-lang/ocaml/ocaml-4.05.0-r2.ebuild b/dev-lang/ocaml/ocaml-4.05.0-r2.ebuild
new file mode 100644
index 000000000000..dc6ca02c535e
--- /dev/null
+++ b/dev-lang/ocaml/ocaml-4.05.0-r2.ebuild
@@ -0,0 +1,132 @@
+# Copyright 1999-2021 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI="5"
+
+inherit flag-o-matic eutils multilib versionator toolchain-funcs
+
+PATCHLEVEL="9"
+MY_P="${P/_/-}"
+DESCRIPTION="Type-inferring functional programming language descended from the ML family"
+HOMEPAGE="https://ocaml.org"
+SRC_URI="https://github.com/ocaml/ocaml/archive/${PV/_/+}.tar.gz -> ${MY_P}.tar.gz
+	mirror://gentoo/${PN}-patches-${PATCHLEVEL}.tar.bz2"
+
+LICENSE="QPL-1.0 LGPL-2"
+# Everytime ocaml is updated to a new version, everything ocaml must be rebuilt,
+# so here we go with the subslot.
+SLOT="0/${PV}"
+KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~mips ~ppc ~ppc64 ~x86 ~amd64-linux ~x86-linux ~ppc-macos ~sparc-solaris ~x86-solaris"
+IUSE="emacs flambda latex ncurses +ocamlopt spacetime X xemacs"
+
+RDEPEND="
+	sys-libs/binutils-libs:=
+	ncurses? ( sys-libs/ncurses:0= )
+	spacetime? ( sys-libs/libunwind:= )
+	X? ( x11-libs/libX11 )
+	!dev-ml/num"
+DEPEND="${RDEPEND}
+	virtual/pkgconfig"
+
+PDEPEND="emacs? ( app-emacs/ocaml-mode )
+	xemacs? ( app-xemacs/ocaml )"
+
+S="${WORKDIR}/${MY_P}"
+pkg_setup() {
+	# dev-lang/ocaml creates its own objects but calls gcc for linking, which will
+	# results in relocations if gcc wants to create a PIE executable
+	if gcc-specs-pie ; then
+		append-ldflags -nopie
+		ewarn "Ocaml generates its own native asm, you're using a PIE compiler"
+		ewarn "We have appended -nopie to ocaml build options"
+		ewarn "because linking an executable with pie while the objects are not pic will not work"
+	fi
+}
+
+src_prepare() {
+	EPATCH_SUFFIX="patch" epatch "${WORKDIR}/patches"
+	epatch "${FILESDIR}/${PN}-4.04.2-tinfo.patch" #459512
+	epatch "${FILESDIR}"/${P}-gcc10.patch
+}
+
+src_configure() {
+	export LC_ALL=C
+	local myconf=""
+
+	# Causes build failures because it builds some programs with -pg,
+	# bug #270920
+	filter-flags -fomit-frame-pointer
+	# Bug #285993
+	filter-mfpmath sse
+
+	# -ggdb3 & co makes it behave weirdly, breaks sexplib
+	replace-flags -ggdb* -ggdb
+
+	# It doesn't compile on alpha without this LDFLAGS
+	use alpha && append-ldflags "-Wl,--no-relax"
+
+	use ncurses || myconf="${myconf} -no-curses"
+	use X || myconf="${myconf} -no-graph"
+	use flambda && myconf="${myconf} -flambda"
+	use spacetime && myconf="${myconf} -spacetime"
+
+	# ocaml uses a home-brewn configure script, preventing it to use econf.
+	RAW_LDFLAGS="$(raw-ldflags)" ./configure \
+		--prefix "${EPREFIX}"/usr \
+		--bindir "${EPREFIX}"/usr/bin \
+		--target-bindir "${EPREFIX}"/usr/bin \
+		--libdir "${EPREFIX}"/usr/$(get_libdir)/ocaml \
+		--mandir "${EPREFIX}"/usr/share/man \
+		-target "${CHOST}" \
+		-host "${CBUILD}" \
+		-cc "$(tc-getCC)" \
+		-as "$(tc-getAS)" \
+		-aspp "$(tc-getCC) -c" \
+		-partialld "$(tc-getLD) -r" \
+		--with-pthread ${myconf} || die "configure failed!"
+
+	# http://caml.inria.fr/mantis/view.php?id=4698
+	export CCLINKFLAGS="${LDFLAGS}"
+}
+
+src_compile() {
+	emake world
+
+	# Native code generation can be disabled now
+	if use ocamlopt ; then
+		# bug #279968
+		emake opt
+		emake -j1 opt.opt
+	fi
+}
+
+src_test() {
+	if use ocamlopt ; then
+		emake -j1 tests
+	else
+		ewarn "${PN} testsuite requires ocamlopt useflag"
+	fi
+}
+
+src_install() {
+	emake BINDIR="${ED}"/usr/bin \
+		LIBDIR="${ED}"/usr/$(get_libdir)/ocaml \
+		MANDIR="${ED}"/usr/share/man \
+		install
+
+	# Symlink the headers to the right place
+	dodir /usr/include
+	dosym /usr/$(get_libdir)/ocaml/caml /usr/include/caml
+
+	dodoc Changes README.adoc
+
+	# Create and envd entry for latex input files
+	if use latex ; then
+		echo "TEXINPUTS=${EPREFIX}/usr/$(get_libdir)/ocaml/ocamldoc:" > "${T}"/99ocamldoc
+		doenvd "${T}"/99ocamldoc
+	fi
+
+	# Install ocaml-rebuild portage set
+	insinto /usr/share/portage/config/sets
+	doins "${FILESDIR}/ocaml.conf"
+}