Re: [gentoo-dev] How to set CXX compiler?

[Xianwen Chen (陈贤文)]

Thank you, Michael and James. 

Yes, I plan to submit a nice patch to the Makefile to upstream. 

However, I think something is not right on my computer. 

I have earlier tried to specify 

  emake CC="$(tc-getCXX)" prefix="${EPREFIX}/usr" DESTDIR="${D}" 

Somehow, emerge does not know what $(tc-getCXX) is. 

############################################################### 

>>> Emerging (1 of 1) sci-geosciences/sosicon-2020.06.04::an-overlay
* 655c75a4de75dbd4998ced6473aea255fed2492c.zip BLAKE2B SHA512 size ;-)
... [ ok ]
>>> Unpacking source...
>>> Unpacking 655c75a4de75dbd4998ced6473aea255fed2492c.zip to /var/tmp/portage/sci-geosciences/sosicon-2020.06.04/work
>>> Source unpacked in /var/tmp/portage/sci-geosciences/sosicon-2020.06.04/work
>>> Preparing source in /var/tmp/portage/sci-geosciences/sosicon-2020.06.04/work/sosicon-655c75a4de75dbd4998ced6473aea255fed2492c/src ...
>>> Source prepared.
>>> Configuring source in /var/tmp/portage/sci-geosciences/sosicon-2020.06.04/work/sosicon-655c75a4de75dbd4998ced6473aea255fed2492c/src ...
>>> Source configured.
>>> Compiling source in /var/tmp/portage/sci-geosciences/sosicon-2020.06.04/work/sosicon-655c75a4de75dbd4998ced6473aea255fed2492c/src ...
/var/tmp/portage/sci-geosciences/sosicon-2020.06.04/temp/environment:
line 454: tc-getCXX: command not found
make -j1 CC= prefix=/usr
DESTDIR=/var/tmp/portage/sci-geosciences/sosicon-2020.06.04/image 
** Pre build steps...
ragel/bin/linux64/ragel -C -L -o parser_ragel.cpp ragel/parser.rl
ragel/bin/linux64/ragel -C -L -o sosi_north_east_ragel.cpp
ragel/sosi_north_east.rl
ragel/bin/linux64/ragel -C -L -o sosi_north_east_height_ragel.cpp
ragel/sosi_north_east_height.rl
ragel/bin/linux64/ragel -C -L -o sosi_origo_ne_ragel.cpp
ragel/sosi_origo_ne.rl
ragel/bin/linux64/ragel -C -L -o sosi_ref_ragel.cpp ragel/sosi_ref.rl
** Compiling...
o ../bin/cmd/linux64/sosicon main.cpp command_line.cpp factory.cpp
logger.cpp utils.cpp byte_order.cpp sosi/sosi_ref_list.cpp
sosi_ref_ragel.cpp sosi/sosi_element.cpp sosi/sosi_element_search.cpp
sosi/sosi_north_east.cpp sosi_north_east_ragel.cpp
sosi_north_east_height_ragel.cpp sosi/sosi_origo_ne.cpp
sosi_origo_ne_ragel.cpp sosi/sosi_charset_singleton.cpp
sosi/sosi_unit.cpp sosi/sosi_translation_table.cpp shape/shapefile.cpp
converter_sosi2shp.cpp converter_sosi2xml.cpp converter_sosi2tsv.cpp
converter_sosi2psql.cpp converter_sosi2mysql.cpp converter_sosi_stat.cpp
coordinate_collection.cpp parser.cpp parser_ragel.cpp -march=nocona -O2
-pipe;
/bin/sh: o: command not found 

############################################################### 

Below is the content of the ebuild: 

############################################################### 

# Copyright 1999-2020 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2 

EAPI=7 

RESTRICT="splitdebug" 

sosicon_git_commit="655c75a4de75dbd4998ced6473aea255fed2492c" 

DESCRIPTION="Converts a sosi file to a shapefile or to PostGIS"
HOMEPAGE="https://github.com/espena/sosicon/"
SRC_URI="
https://github.com/espena/sosicon/archive/${sosicon_git_commit}.zip
" 

SLOT="0/3.0"
LICENSE="GPL-3"
KEYWORDS="amd64 x86" 

S="${WORKDIR}/sosicon-${sosicon_git_commit}/src" 

src_prepare(){
default 

mv makefile Makefile 

sed -i "s|INSTALL_PATH ?= /usr/local|INSTALL_PATH = ${D}|g" Makefile ||
die
sed -i "s|COMPILER_OPTS =|COMPILER_OPTS = ${CXXFLAGS}|g" Makefile || die
} 

src_compile() {
emake CC="$(tc-getCXX)" prefix="${EPREFIX}/usr" DESTDIR="${D}" 

} 

src_install() {
mkdir ${D}/bin
emake install prefix="${EPREFIX}/usr" DESTDIR="${D}"
} 

############################################################### 

Xianwen