前言
使用PostGIS提供的st_asmvt函数返回MapBox格式的矢量切片时，PostGIS报错missing libprotobuf-c，为了解决这个问题，需要从源码编译postgis，添加对protobuf的支持，特此记录。
1.安装postgresql
通过yum安装postgresql10 ，安装目录/var/lib/pgsql/10
2.安装gcc
yum install -y gcc gcc-c++
3.编译安装GEOS
cd /mysoft
wget https://download.osgeo.org/geos/geos-3.7.0.tar.bz2
tar -jxvf geos-3.7.0.tar.bz2
cd geos-3.7.0
./configure --prefix=/usr/local/geos-3.7.0
make
make install
4.编译安装Proj
wget http://download.osgeo.org/proj/proj-5.2.0.tar.gz
tar -zxvf proj-5.2.0.tar.gz
cd proj-5.2.0
./configure --prefix=/usr/local/proj-5.2.0
make
make install
5.编译安装GDAL
wget https://download.osgeo.org/gdal/2.3.2/gdal-2.3.2.tar.gz
tar -zxvf gdal-2.3.2.tar.gz
cd gdal-2.3.2
./configure --prefix=/usr/local/gdal-2.3.2 --with-pg=/usr/pgsql-10/bin/pg_config
make
make install
6.编译安装json-c，添加对geojson支持
wget https://github.com/json-c/json-c/archive/json-c-0.13.1-20180305.tar.gz
tar -zxvf json-c-0.13.1-20180305.tar.gz
cd json-c-0.13.1-20180305
./configure --prefix=/usr/local/json-c-0.13.1
make
make install
7.编译安装libxml2
wget https://github.com/GNOME/libxml2/archive/v2.9.7.tar.gz
tar -zxvf libxml2-sources-2.9.7.tar.gz
cd libxml2-2.9.7
./configure --prefix=/usr/local/libxml2-2.9.7
make
make install
8.编译安装protobuf
wget https://github.com/google/protobuf/releases/download/v3.6.1/protobuf-all-3.6.1.tar.gz
tar zxvf protobuf-all-3.6.1.tar.gz
./autogen.sh
#配置安装目录
./configure --prefix=/usr/local/protobuf-3.6.1
make
make install
#配置环境变量，增加/usr/local/protobuf-3.6.1安装目录
vi /etc/profile
export CMAKE_HOME=/usr/bin/cmake
export PKG_CONFIG_PATH=/usr/local/protobuf-3.6.1/lib/pkgconfig
export PROTOBUF_HOME=/usr/local/protobuf-3.6.1
export PATH=$CMAKE_HOME/bin:$PROTOBUF_HOME/bin:$PATH
#保存退出
source /etc/profile
#验证protobuf执行程序
protoc --version
#出现libprotoc 3.6.1说明安装成功
9.安装protobuf-c
wget https://github.com/protobuf-c/protobuf-c/releases/download/v1.3.1/protobuf-c-1.3.1.tar.gz
tar -zxvf protobuf-c-1.3.1.tar.gz
cd protobuf-c-1.3.1
#导入protobuf的pkgconfig，否则"--No package 'protobuf' found"
export PKG_CONFIG_PATH=/usr/local/protobuf-3.6.1/lib/pkgconfig
./configure --prefix=/usr/local/protobuf-c-1.3.1
make
make install
#配置环境变量，增加下protobuf-c-1.3.1/bin
vi /etc/profile
export PATH=:/usr/local/protobuf-c-1.3.1/bin
#保存退出
source /etc/profile
10.安装cgal，根据遥想公瑾当年的简书所述，安装cgal不能指定安装目录
#boost
[root@VM_0_4_centos opt]# yum install boost-devel
# 安装指定版本cgal-4.13
[root@VM_0_4_centos opt]# wget https://github.com/CGAL/cgal/archive/releases/CGAL-4.13.tar.gz
[root@VM_0_4_centos opt]# tar -zxvf CGAL-4.13.tar.gz
[root@VM_0_4_centos opt]# cd CGAL-4.13
[root@VM_0_4_centos CGAL-4.13]#mkdir build & cd build
#cmake不要指定安装路径
[root@VM_0_4_centos build]# cmake ..
[root@VM_0_4_centos build]# make
[root@VM_0_4_centos build]# make install
10.安装sfcgal
wget https://github.com/Oslandia/SFCGAL/archive/v1.3.6.tar.gz
tar -zxvf v1.3.6.tar.gz
cd SFCGAL-1.3.6
mkdir build & cd build
cmake -DCMAKE_INSTALL_PREFIX=/usr/local/sfcgal-1.3.6 ..
make
make install
10.编译安装postgis
10.1配置ld.so.conf
[root@VM_0_4_centos opt]# vim /etc/ld.so.conf
#编辑内容如下
include ld.so.conf.d/*.conf
/home/postgres/lib
/usr/local/proj-5.2.0/lib
/usr/local/gdal-2.3.2/lib
/usr/local/geos-3.7.0/lib
/usr/local//sfcgal-1.3.6/lib64
/usr/local/json-c-0.13.1/lib
/usr/local/libxml2-2.9.7/lib
/usr/local/protobuf-3.6.1/lib
/usr/local/protobuf-c-1.3.1/lib
#编辑完成后wq!保存退出
#保存配置，重启生效
[root@VM_0_4_centos opt]# ldconfig -v
10.2编译安装
wget http://download.osgeo.org/postgis/source/postgis-2.5.0.tar.gz
tar -zxvf postgis-2.5.0.tar.gz
cd postgis-2.5.0
#根据安装不同的要求，选择任意一个configure
#基本安装，不带protobuf,sfcgal
./configure --prefix=/home/postgres --with-gdalconfig=/usr/local/gdal-2.3.2/bin/gdal-config --with-pgconfig=/home/postgres/bin/pg_config --with-geosconfig=/usr/local/geos-3.7.0/bin/geos-config --with-projdir=/usr/local/proj-5.2.0 --with-xml2config=/usr/local/libxml2-2.9.7/bin/xml2-config --with-jsondir=/usr/local/json-c-0.13.1
#带protobuf安装，支持mvt
./configure --prefix=/home/postgres --with-gdalconfig=/usr/local/gdal-2.3.2/bin/gdal-config --with-pgconfig=/home/postgres/bin/pg_config --with-geosconfig=/usr/local/geos-3.7.0/bin/geos-config --with-projdir=/usr/local/proj-5.2.0 --with-xml2config=/usr/local/libxml2-2.9.7/bin/xml2-config --with-jsondir=/usr/local/json-c-0.13.1 --with-protobufdir=/usr/local/protobuf-c-1.3.1
# 带protobuf,sfcgal安装
./configure --prefix=/home/postgres --with-gdalconfig=/usr/local/gdal-2.3.2/bin/gdal-config --with-pgconfig=/home/postgres/bin/pg_config --with-geosconfig=/usr/local/geos-3.7.0/bin/geos-config --with-projdir=/usr/local/proj-5.2.0 --with-xml2config=/usr/local/libxml2-2.9.7/bin/xml2-config --with-jsondir=/usr/local/json-c-0.13.1 --with-protobufdir=/usr/local/protobuf-c-1.3.1 --with-sfcgal=/usr/local/sfcgal-1.3.6/bin/sfcgal-config
make
make install
