commit:     033921e6456dcaeef51ded6440621d734088dd5a
Author:     Michael Orlitzky <mjo <AT> gentoo <DOT> org>
AuthorDate: Tue Jan 25 11:43:16 2022 +0000
Commit:     Michael Orlitzky <mjo <AT> gentoo <DOT> org>
CommitDate: Tue Jan 25 11:46:43 2022 +0000
URL:        https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=033921e6

sci-mathematics/gfan: new revision to fix the doc build.

Something changed with LaTeX and now we need a different set of
commands to build the manual.

Closes: https://bugs.gentoo.org/830091
Package-Manager: Portage-3.0.28, Repoman-3.0.3
Signed-off-by: Michael Orlitzky <mjo <AT> gentoo.org>

 sci-mathematics/gfan/gfan-0.6.2-r4.ebuild | 71 +++++++++++++++++++++++++++++++
 1 file changed, 71 insertions(+)

diff --git a/sci-mathematics/gfan/gfan-0.6.2-r4.ebuild 
b/sci-mathematics/gfan/gfan-0.6.2-r4.ebuild
new file mode 100644
index 000000000000..6ef0572a0ec3
--- /dev/null
+++ b/sci-mathematics/gfan/gfan-0.6.2-r4.ebuild
@@ -0,0 +1,71 @@
+# Copyright 1999-2022 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit flag-o-matic toolchain-funcs
+
+DESCRIPTION="Compute Groebner fans and tropical varieties"
+HOMEPAGE="https://users-math.au.dk/~jensen/software/gfan/gfan.html";
+SRC_URI="https://users-math.au.dk/~jensen/software/${PN}/${PN}${PV}.tar.gz";
+
+LICENSE="GPL-2+"
+SLOT="0"
+KEYWORDS="~amd64 ~arm ~x86 ~amd64-linux ~x86-linux"
+IUSE="doc"
+
+BDEPEND="doc? ( virtual/latex-base )"
+DEPEND="dev-libs/gmp:0=[cxx(+)]
+       sci-libs/cddlib:0="
+RDEPEND="${DEPEND}"
+
+S="${WORKDIR}/${PN}${PV}"
+
+PATCHES=(
+       "${FILESDIR}/${PN}-0.6.2-xcode9.3_compat.patch"
+       "${FILESDIR}/${PN}-0.6.2-testsuite.patch"
+       "${FILESDIR}/${PN}-0.6.2-Makefile.patch"
+       )
+
+pkg_setup() {
+       tc-export CC CXX
+
+       # This should really go in cppflags, but that doesn't work with
+       # gfan's hand-written Makefile.
+       append-cxxflags -DNOCDDPREFIX -I"${EPREFIX}"/usr/include/cddlib
+}
+
+src_prepare() {
+       default
+
+       # This test hangs on x86, bug 717112.
+       rm -r testsuite/0602ResultantFanProjection || \
+               die "unable to disable test 0602ResultantFanProjection"
+}
+
+src_configure() {
+       # The upstream Makefile says that GCC produces bad code with -O3.
+       replace-flags "-O3" "-O2"
+       default
+}
+
+src_compile() {
+       default
+       if use doc; then
+               pushd doc > /dev/null || die
+               # The LaTeX build commands need to be repeated until the
+               # document "stops changing," which is not as easy as it
+               # sounds to detect. Running it twice seems to work here.
+               for iteration in 1 2; do
+                       latex manual.tex && \
+                               bibtex manual && \
+                               dvipdf manual.dvi manual.pdf || die
+               done
+               popd > /dev/null || die
+       fi
+}
+
+src_install() {
+       emake PREFIX="${ED}/usr" install
+       use doc && dodoc doc/manual.pdf
+}

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