奶牛在踩坑过程中，请不要阻止。身为一个站长，一路以来一直使用LNMP来安装LNMP环境，深感羞耻，打算把该踩的坑都踩一踩，也学习一下该学习的东西。
今天是把OpenResty+PHP+Mysql的坑都踩了一遍，学到了不少东西，与君共勉。
需求环境安装
build-essential libcurl14 libcurl4-gnutls-dev openssl curl libbz2-dev libxml2-dev libjpeg-dev libpng-dev libfreetype6-dev libzip-dev libxslt1-dev下载PHP7.3.8
wget https://www.php.net/distributions/php-7.3.8.tar.gz解压
tar xzvf php-7.3.8.tar.gz进入目录
cd php-7.3.8编译安装
./configure --prefix=/usr/local/php --with-config-file-path=/usr/local/php/etc --with-config-file-scan-dir=/usr/local/php/conf.d --enable-fpm --with-fpm-user=www --with-fpm-group=www --enable-mysqlnd --with-mysqli=mysqlnd --with-pdo-mysql=mysqlnd --with-iconv-dir --with-freetype-dir --with-jpeg-dir --with-png-dir --with-zlib --with-libxml-dir=/usr --enable-xml --disable-rpath --enable-bcmath --enable-shmop --enable-sysvsem --enable-inline-optimization --with-curl --enable-mbregex --enable-mbstring --enable-intl --enable-ftp --with-gd --with-openssl --with-mhash --enable-pcntl --enable-sockets --with-xmlrpc --enable-zip --enable-soap --with-gettext --enable-opcache --with-xsl
make
make test
make install
mkdir -p /usr/local/php/{etc,conf.d}
cp php.ini-production /usr/local/php/etc/php.ini
cp sapi/fpm/init.d.php-fpm /etc/init.d/php-fpm
chmod +x /etc/init.d/php-fpm
update-rc.d php-fpm default防止Failed to start php.service: Unit php-fpm.service not found.类错误发生。
配置文件php.ini
贴上现有的配置，改自LNMP。
engine = On
short_open_tag = On
precision = 14
output_buffering = 4096
zlib.output_compression = Off
implicit_flush = Off
unserialize_callback_func =
serialize_precision = -1
disable_functions = passthru,exec,system,chroot,chgrp,chown,shell_exec,proc_open,proc_get_status,popen,ini_alter,ini_restore,dl,openlog,syslog,readlink,symlink,popepassthru,stream_socket_server
disable_classes =
zend.enable_gc = On
expose_php = On
max_execution_time = 300
max_input_time = 60
memory_limit = 128M
error_reporting = E_ALL & ~E_DEPRECATED & ~E_STRICT
display_errors = Off
display_startup_errors = Off
log_errors = On
log_errors_max_len = 1024
ignore_repeated_errors = Off
ignore_repeated_source = Off
report_memleaks = On
html_errors = On
variables_order = "GPCS"
request_order = "GP"
register_argc_argv = Off
auto_globals_jit = On
post_max_size = 50M
auto_prepend_file =
auto_append_file =
default_mimetype = "text/html"
default_charset = "UTF-8"
doc_root =
user_dir =
enable_dl = Off
cgi.fix_pathinfo=0
file_uploads = On
upload_max_filesize = 50M
max_file_uploads = 20
allow_url_fopen = On
allow_url_include = Off
default_socket_timeout = 60
extension=fileinfo
[CLI Server]
cli_server.color = On
[Date]
date.timezone = PRC
[filter]
[iconv]
[intl]
[sqlite3]
[Pcre]
[Pdo]
[Pdo_mysql]
pdo_mysql.cache_size = 2000
pdo_mysql.default_socket=
[Phar]
[mail function]
SMTP = localhost
smtp_port = 25
mail.add_x_header = Off
[ODBC]
odbc.allow_persistent = On
odbc.check_persistent = On
odbc.max_persistent = -1
odbc.max_links = -1
odbc.defaultlrl = 4096
odbc.defaultbinmode = 1
[Interbase]
ibase.allow_persistent = 1
ibase.max_persistent = -1
ibase.max_links = -1
ibase.timestampformat = "%Y-%m-%d %H:%M:%S"
ibase.dateformat = "%Y-%m-%d"
ibase.timeformat = "%H:%M:%S"
[MySQLi]
mysqli.max_persistent = -1
mysqli.allow_persistent = On
mysqli.max_links = -1
mysqli.cache_size = 2000
mysqli.default_port = 3306
mysqli.default_socket =
mysqli.default_host =
mysqli.default_user =
mysqli.default_pw =
mysqli.reconnect = Off
[mysqlnd]
mysqlnd.collect_statistics = On
mysqlnd.collect_memory_statistics = Off
[OCI8]
[PostgreSQL]
pgsql.allow_persistent = On
pgsql.auto_reset_persistent = Off
pgsql.max_persistent = -1
pgsql.max_links = -1
pgsql.ignore_notice = 0
pgsql.log_notice = 0
[bcmath]
bcmath.scale = 0
[browscap]
[Session]
session.save_handler = files
session.use_strict_mode = 0
session.use_cookies = 1
session.use_only_cookies = 1
session.name = PHPSESSID
session.auto_start = 0
session.cookie_lifetime = 0
session.cookie_path = /
session.cookie_domain =
session.cookie_httponly =
session.serialize_handler = php
session.gc_probability = 1
session.gc_divisor = 1000
session.gc_maxlifetime = 1440
session.referer_check =
session.cache_limiter = nocache
session.cache_expire = 180
session.use_trans_sid = 0
session.sid_length = 26
session.trans_sid_tags = "a=href,area=href,frame=src,form="
session.sid_bits_per_character = 5
[Assertion]
zend.assertions = -1
[COM]
[mbstring]
[gd]
[exif]
[Tidy]
tidy.clean_output = Off
[soap]
soap.wsdl_cache_enabled=1
soap.wsdl_cache_dir="/tmp"
soap.wsdl_cache_ttl=86400
soap.wsdl_cache_limit = 5
[sysvshm]
[ldap]
ldap.max_links = -1
[dba]
[opcache]
[zend opcache]
zend_extension="/usr/local/php/lib/php/extensions/no-debug-non-zts-20180731/opcache.so"
opcache.force_restart_timeout=3600
opcache.memory_consumption=128
opcache.interned_strings_buffer=8
opcache.max_accelerated_files=4000
opcache.revalidate_freq=60
opcache.fast_shutdown=1
opcache.enable=1
opcache.enable_cli=1
[curl]
[openssl]关于fileinfo
这个默认是安装的，但是有说内存小于1G是不推荐安装的，编译会出错，但是fileinfo很有用，有些程序需要使用fileinfo，未安装会导致500错误。可以在configiure的时候使用–disable-fileinfo参数来禁止安装，但是没有–enable-fileinfo参数哦。
关于fileinfo手动安装
cd ./ext/fileinfo/
apt install autoconf
/usr/local/php/bin/phpize
./configure –with-php-config=/usr/local/php/bin/php-config
make
make install最后修改php.ini添加extension=fileinfo即可。
PHP configure参数详细列表
如下，以便速查
~/php/php-7.3.8# ./configure --help
`configure' configures this package to adapt to many kinds of systems.
Usage: ./configure [OPTION]... [VAR=VALUE]...
To assign environment variables (e.g., CC, CFLAGS...), specify them as
VAR=VALUE. See below for descriptions of some of the useful variables.
Defaults for the options are specified in brackets.
Configuration:
-h, --help display this help and exit
--help=short display options specific to this package
--help=recursive display the short help of all the included packages
-V, --version display version information and exit
-q, --quiet, --silent do not print `checking ...' messages
--cache-file=FILE cache test results in FILE [disabled]
-C, --config-cache alias for `--cache-file=config.cache'
-n, --no-create do not create output files
--srcdir=DIR find the sources in DIR [configure dir or `..']
Installation directories:
--prefix=PREFIX install architecture-independent files in PREFIX
[/usr/local]
--exec-prefix=EPREFIX install architecture-dependent files in EPREFIX
[PREFIX]
By default, `make install' will install all the files in
`/usr/local/bin', `/usr/local/lib' etc. You can specify
an installation prefix other than `/usr/local' using `--prefix',
for instance `--prefix=$HOME'.
For better control, use the options below.
Fine tuning of the installation directories:
--bindir=DIR user executables [EPREFIX/bin]
--sbindir=DIR system admin executables [EPREFIX/sbin]
--libexecdir=DIR program executables [EPREFIX/libexec]
--sysconfdir=DIR read-only single-machine data [PREFIX/etc]
--sharedstatedir=DIR modifiable architecture-independent data [PREFIX/com]
--localstatedir=DIR modifiable single-machine data [PREFIX/var]
--runstatedir=DIR modifiable per-process data [LOCALSTATEDIR/run]
--libdir=DIR object code libraries [EPREFIX/lib]
--includedir=DIR C header files [PREFIX/include]
--oldincludedir=DIR C header files for non-gcc [/usr/include]
--datarootdir=DIR read-only arch.-independent data root [PREFIX/share]
--datadir=DIR read-only architecture-independent data [DATAROOTDIR]
--infodir=DIR info documentation [DATAROOTDIR/info]
--localedir=DIR locale-dependent data [DATAROOTDIR/locale]
--mandir=DIR man documentation [DATAROOTDIR/man]
--docdir=DIR documentation root [DATAROOTDIR/doc/PACKAGE]
--htmldir=DIR html documentation [DOCDIR]
--dvidir=DIR dvi documentation [DOCDIR]
--pdfdir=DIR pdf documentation [DOCDIR]
--psdir=DIR ps documentation [DOCDIR]
System types:
--build=BUILD configure for building on BUILD [guessed]
--host=HOST cross-compile to build programs to run on HOST [BUILD]
--target=TARGET configure for building compilers for TARGET [HOST]
Optional Features and Packages:
--disable-option-checking ignore unrecognized --enable/--with options
--disable-FEATURE do not include FEATURE (same as --enable-FEATURE=no)
--enable-FEATURE[=ARG] include FEATURE [ARG=yes]
--with-PACKAGE[=ARG] use PACKAGE [ARG=yes]
--without-PACKAGE do not use PACKAGE (same as --with-PACKAGE=no)
--with-libdir=NAME Look for libraries in .../NAME rather than .../lib
--disable-rpath Disable passing additional runtime library
search paths
--enable-re2c-cgoto Enable -g flag to re2c to use computed goto gcc extension
--disable-gcc-global-regs
whether to enable GCC global register variables
SAPI modules:
--with-apxs2=FILE Build shared Apache 2.0 Handler module. FILE is the optional
pathname to the Apache apxs tool apxs
--disable-cli Disable building CLI version of PHP
(this forces --without-pear)
--enable-embed=TYPE EXPERIMENTAL: Enable building of embedded SAPI library
TYPE is either 'shared' or 'static'. TYPE=shared
--enable-fpm Enable building of the fpm SAPI executable
--with-fpm-user=USER Set the user for php-fpm to run as. (default: nobody)
--with-fpm-group=GRP Set the group for php-fpm to run as. For a system user, this
should usually be set to match the fpm username (default: nobody)
--with-fpm-systemd Activate systemd integration
--with-fpm-acl Use POSIX Access Control Lists
--with-litespeed Build PHP as litespeed module
--enable-phpdbg Build phpdbg
--enable-phpdbg-webhelper
Build phpdbg web SAPI support
--enable-phpdbg-debug Build phpdbg in debug mode
--enable-phpdbg-readline Enable readline support in phpdbg (depends on static ext/readline)
--disable-cgi Disable building CGI version of PHP
--with-valgrind=DIR Enable valgrind support
General settings:
--enable-gcov Enable GCOV code coverage (requires LTP) - FOR DEVELOPERS ONLY!!
--enable-debug Compile with debugging symbols
--with-layout=TYPE Set how installed files will be laid out. Type can
be either PHP or GNU [PHP]
--with-config-file-path=PATH
Set the path in which to look for php.ini [PREFIX/lib]
--with-config-file-scan-dir=PATH
Set the path where to scan for configuration files
--enable-sigchild Enable PHP's own SIGCHLD handler
--enable-libgcc Enable explicitly linking against libgcc
--disable-short-tags Disable the short-form <? start tag by default
--enable-dmalloc Enable dmalloc
--disable-ipv6 Disable IPv6 support
--enable-dtrace Enable DTrace support
--enable-fd-setsize Set size of descriptor sets
Extensions:
--with-EXTENSION=shared[,PATH]
NOTE: Not all extensions can be build as 'shared'.
Example: --with-foobar=shared,/usr/local/foobar/
o Builds the foobar extension as shared extension.
o foobar package install prefix is /usr/local/foobar/
--disable-all Disable all extensions which are enabled by default
--disable-libxml Disable LIBXML support
--with-libxml-dir=DIR LIBXML: libxml2 install prefix
--with-openssl=DIR Include OpenSSL support (requires OpenSSL >= 1.0.1)
--with-kerberos=DIR OPENSSL: Include Kerberos support
--with-system-ciphers OPENSSL: Use system default cipher list instead of hardcoded value
--with-pcre-regex=DIR Include Perl Compatible Regular Expressions support.
DIR is the PCRE install prefix BUNDLED
--with-pcre-jit Enable PCRE JIT functionality (BUNDLED only)
--with-pcre-valgrind=DIR
Enable PCRE valgrind support. Developers only!
--without-sqlite3=DIR Do not include SQLite3 support. DIR is the prefix to
SQLite3 installation directory.
--with-zlib=DIR Include ZLIB support (requires zlib >= 1.2.0.4)
--with-zlib-dir=<DIR> Define the location of zlib install directory
--enable-bcmath Enable bc style precision math functions
--with-bz2=DIR Include BZip2 support
--enable-calendar Enable support for calendar conversion
--disable-ctype Disable ctype functions
--with-curl=DIR Include cURL support
--enable-dba Build DBA with bundled modules. To build shared DBA
extension use --enable-dba=shared
--with-qdbm=DIR DBA: QDBM support
--with-gdbm=DIR DBA: GDBM support
--with-ndbm=DIR DBA: NDBM support
--with-db4=DIR DBA: Oracle Berkeley DB 4.x or 5.x support
--with-db3=DIR DBA: Oracle Berkeley DB 3.x support
--with-db2=DIR DBA: Oracle Berkeley DB 2.x support
--with-db1=DIR DBA: Oracle Berkeley DB 1.x support/emulation
--with-dbm=DIR DBA: DBM support
--with-tcadb=DIR DBA: Tokyo Cabinet abstract DB support
--with-lmdb=DIR DBA: Lightning memory-mapped database support
--without-cdb=DIR DBA: CDB support (bundled)
--disable-inifile DBA: INI support (bundled)
--disable-flatfile DBA: FlatFile support (bundled)
--disable-dom Disable DOM support
--with-libxml-dir=DIR DOM: libxml2 install prefix
--with-enchant=DIR Include enchant support.
GNU Aspell version 1.1.3 or higher required.
--enable-exif Enable EXIF (metadata from images) support
--disable-fileinfo Disable fileinfo support
--disable-filter Disable input filter support
--with-pcre-dir FILTER: pcre install prefix
--enable-ftp Enable FTP support
--with-openssl-dir=DIR FTP: openssl install prefix
--with-gd=DIR Include GD support. DIR is the GD library base
install directory BUNDLED
--with-webp-dir=DIR GD: Set the path to libwebp install prefix
--with-jpeg-dir=DIR GD: Set the path to libjpeg install prefix
--with-png-dir=DIR GD: Set the path to libpng install prefix
--with-zlib-dir=DIR GD: Set the path to libz install prefix
--with-xpm-dir=DIR GD: Set the path to libXpm install prefix
--with-freetype-dir=DIR GD: Set the path to FreeType 2 install prefix
--enable-gd-jis-conv GD: Enable JIS-mapped Japanese font support
--with-gettext=DIR Include GNU gettext support
--with-gmp=DIR Include GNU MP support
--with-mhash=DIR Include mhash support
--disable-hash Disable hash support
--without-iconv=DIR Exclude iconv support
--with-imap=DIR Include IMAP support. DIR is the c-client install prefix
--with-kerberos=DIR IMAP: Include Kerberos support. DIR is the Kerberos install prefix
--with-imap-ssl=DIR IMAP: Include SSL support. DIR is the OpenSSL install prefix
--with-interbase=DIR Include Firebird support. DIR is the Firebird base
install directory /opt/firebird
--enable-intl Enable internationalization support
--with-icu-dir=DIR Specify where ICU libraries and headers can be found
--disable-json Disable JavaScript Object Serialization support
--with-ldap=DIR Include LDAP support
--with-ldap-sasl=DIR LDAP: Include Cyrus SASL support
--enable-mbstring Enable multibyte string support
--disable-mbregex MBSTRING: Disable multibyte regex support
--disable-mbregex-backtrack
MBSTRING: Disable multibyte regex backtrack check
--with-onig=DIR MBSTRING: Use external oniguruma. DIR is the oniguruma install prefix.
If DIR is not set, the bundled oniguruma will be used
--with-mysqli=FILE Include MySQLi support. FILE is the path
to mysql_config. If no value or mysqlnd is passed
as FILE, the MySQL native driver will be used
--enable-embedded-mysqli
MYSQLi: Enable embedded support
Note: Does not work with MySQL native driver!
--with-mysql-sock=SOCKPATH
MySQLi/PDO_MYSQL: Location of the MySQL unix socket pointer.
If unspecified, the default locations are searched
--with-oci8=DIR Include Oracle Database OCI8 support. DIR defaults to $ORACLE_HOME.
Use --with-oci8=instantclient,/path/to/instant/client/lib
to use an Oracle Instant Client installation
--with-odbcver=HEX Force support for the passed ODBC version. A hex number is expected, default 0x0350.
Use the special value of 0 to prevent an explicit ODBCVER to be defined.
--with-adabas=DIR Include Adabas D support /usr/local
--with-sapdb=DIR Include SAP DB support /usr/local
--with-solid=DIR Include Solid support /usr/local/solid
--with-ibm-db2=DIR Include IBM DB2 support /home/db2inst1/sqllib
--with-empress=DIR Include Empress support \$EMPRESSPATH
(Empress Version >= 8.60 required)
--with-empress-bcs=DIR Include Empress Local Access support \$EMPRESSPATH
(Empress Version >= 8.60 required)
--with-custom-odbc=DIR Include user defined ODBC support. DIR is ODBC install base
directory /usr/local. Make sure to define CUSTOM_ODBC_LIBS and
have some odbc.h in your include dirs. f.e. you should define
following for Sybase SQL Anywhere 5.5.00 on QNX, prior to
running this configure script:
CPPFLAGS=\"-DODBC_QNX -DSQLANY_BUG\"
LDFLAGS=-lunix
CUSTOM_ODBC_LIBS=\"-ldblib -lodbc\"
--with-iodbc=DIR Include iODBC support /usr/local
--with-esoob=DIR Include Easysoft OOB support /usr/local/easysoft/oob/client
--with-unixODBC=DIR Include unixODBC support /usr/local
--with-dbmaker=DIR Include DBMaker support
--disable-opcache Disable Zend OPcache support
--disable-opcache-file Disable file based caching
--disable-huge-code-pages
Disable copying PHP CODE pages into HUGE PAGES
--enable-pcntl Enable pcntl support (CLI/CGI only)
--disable-pdo Disable PHP Data Objects support
--with-pdo-dblib=DIR PDO: DBLIB-DB support. DIR is the FreeTDS home directory
--with-pdo-firebird=DIR PDO: Firebird support. DIR is the Firebird base
install directory /opt/firebird
--with-pdo-mysql=DIR PDO: MySQL support. DIR is the MySQL base directory
If no value or mysqlnd is passed as DIR, the
MySQL native driver will be used
--with-zlib-dir=DIR PDO_MySQL: Set the path to libz install prefix
--with-pdo-oci=DIR PDO: Oracle OCI support. DIR defaults to $ORACLE_HOME.
Use --with-pdo-oci=instantclient,/path/to/instant/client/lib
for an Oracle Instant Client installation.
--with-pdo-odbc=flavour,dir
PDO: Support for 'flavour' ODBC driver.
include and lib dirs are looked for under 'dir'.
'flavour' can be one of: ibm-db2, iODBC, unixODBC, generic
If ',dir' part is omitted, default for the flavour
you have selected will be used. e.g.:
--with-pdo-odbc=unixODBC
will check for unixODBC under /usr/local. You may attempt
to use an otherwise unsupported driver using the 'generic'
flavour. The syntax for generic ODBC support is:
--with-pdo-odbc=generic,dir,libname,ldflags,cflags
When built as 'shared' the extension filename is always pdo_odbc.so
--with-pdo-pgsql=DIR PDO: PostgreSQL support. DIR is the PostgreSQL base
install directory or the path to pg_config
--without-pdo-sqlite=DIR
PDO: sqlite 3 support. DIR is the sqlite base
install directory BUNDLED
--with-pgsql=DIR Include PostgreSQL support. DIR is the PostgreSQL
base install directory or the path to pg_config
--disable-phar Disable phar support
--disable-posix Disable POSIX-like functions
--with-pspell=DIR Include PSPELL support.
GNU Aspell version 0.50.0 or higher required
--with-libedit=DIR Include libedit readline replacement (CLI/CGI only)
--with-readline=DIR Include readline support (CLI/CGI only)
--with-recode=DIR Include recode support
--disable-session Disable session support
--with-mm=DIR SESSION: Include mm support for session storage
--enable-shmop Enable shmop support
--disable-simplexml Disable SimpleXML support
--with-libxml-dir=DIR SimpleXML: libxml2 install prefix
--with-snmp=DIR Include SNMP support
--with-openssl-dir=DIR SNMP: openssl install prefix
--enable-soap Enable SOAP support
--with-libxml-dir=DIR SOAP: libxml2 install prefix
--enable-sockets Enable sockets support
--with-sodium=DIR Include sodium support
--with-password-argon2=DIR
Include Argon2 support in password_*. DIR is the Argon2 shared library path
--enable-sysvmsg Enable sysvmsg support
--enable-sysvsem Enable System V semaphore support
--enable-sysvshm Enable the System V shared memory support
--with-tidy=DIR Include TIDY support
--disable-tokenizer Disable tokenizer support
--enable-wddx Enable WDDX support
--with-libxml-dir=DIR WDDX: libxml2 install prefix
--with-libexpat-dir=DIR WDDX: libexpat dir for XMLRPC-EPI (deprecated)
--disable-xml Disable XML support
--with-libxml-dir=DIR XML: libxml2 install prefix
--with-libexpat-dir=DIR XML: libexpat install prefix (deprecated)
--disable-xmlreader Disable XMLReader support
--with-libxml-dir=DIR XMLReader: libxml2 install prefix
--with-xmlrpc=DIR Include XMLRPC-EPI support
--with-libxml-dir=DIR XMLRPC-EPI: libxml2 install prefix
--with-libexpat-dir=DIR XMLRPC-EPI: libexpat dir for XMLRPC-EPI (deprecated)
--with-iconv-dir=DIR XMLRPC-EPI: iconv dir for XMLRPC-EPI
--disable-xmlwriter Disable XMLWriter support
--with-libxml-dir=DIR XMLWriter: libxml2 install prefix
--with-xsl=DIR Include XSL support. DIR is the libxslt base
install directory (libxslt >= 1.1.0 required)
--enable-zend-test Enable zend-test extension
--enable-zip Include Zip read/write support
--with-zlib-dir=DIR ZIP: Set the path to libz install prefix
--with-pcre-dir ZIP: pcre install prefix
--with-libzip=DIR ZIP: use libzip
--enable-mysqlnd Enable mysqlnd explicitly, will be done implicitly
when required by other extensions
--disable-mysqlnd-compression-support
Disable support for the MySQL compressed protocol in mysqlnd
--with-zlib-dir=DIR mysqlnd: Set the path to libz install prefix
PEAR:
--with-pear=DIR Install PEAR in DIR [PREFIX/lib/php]
--without-pear Do not install PEAR
Zend:
--enable-maintainer-zts Enable thread safety - for code maintainers only!!
--disable-inline-optimization
If building zend_execute.lo fails, try this switch
--disable-zend-signals whether to enable zend signal handling
TSRM:
--with-tsrm-pth=pth-config
Use GNU Pth
--with-tsrm-st Use SGI's State Threads
--with-tsrm-pthreads Use POSIX threads (default)
Libtool:
--enable-shared=PKGS Build shared libraries default=yes
--enable-static=PKGS Build static libraries default=yes
--enable-fast-install=PKGS
Optimize for fast installation default=yes
--with-gnu-ld Assume the C compiler uses GNU ld default=no
--disable-libtool-lock Avoid locking (might break parallel builds)
--with-pic Try to use only PIC/non-PIC objects default=use both
--with-tags=TAGS Include additional configurations automatic
Some influential environment variables:
CC C compiler command
CFLAGS C compiler flags
LDFLAGS linker flags, e.g. -L<lib dir> if you have libraries in a
nonstandard directory <lib dir>
LIBS libraries to pass to the linker, e.g. -l<library>
CPPFLAGS (Objective) C/C++ preprocessor flags, e.g. -I<include dir> if
you have headers in a nonstandard directory <include dir>
CPP C preprocessor
YACC The `Yet Another Compiler Compiler' implementation to use.
Defaults to the first program found out of: `bison -y', `byacc',
`yacc'.
YFLAGS The list of arguments that will be passed by default to $YACC.
This script will default YFLAGS to the empty string to avoid a
default value of `-d' given by some make applications.
CXX C++ compiler command
CXXFLAGS C++ compiler flags
CXXCPP C++ preprocessor
Use these variables to override the choices made by `configure' or to help
it to find libraries and programs with nonstandard names/locations.
Report bugs to the package provider.
