撰写时间：2022-04-08，整理时间：2023-01-30。 在撰写本文的时候，php7.3最新的版本是
7.3.33，以下是macOS编译安装PHP的过程
一、编译配置
编译配置，命令执行之后，会检测你系统的环境是否已经满足编译依赖
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./configure \
--prefix=/usr/local/php-7.3.33 \
--with-config-file-path=/usr/local/php-7.3.33/etc \
--with-pdo-mysql=mysqlnd \
--with-mysqli=mysqlnd \
--with-libxml-dir \
--with-gd \
--with-jpeg-dir \
--with-png-dir \
--with-freetype-dir \
--with-iconv=/usr/local/Cellar/libiconv/1.16 \
--with-zlib-dir=/usr/local/Cellar/zlib/1.2.11 \
--with-bz2=/usr/local/Cellar/bzip2/1.0.8 \
--with-openssl=/usr/local/Cellar/openssl@1.1/1.1.1n \
--with-curl=/usr/local/Cellar/curl/7.82.0 \
--enable-soap \
--enable-mbstring \
--enable-sockets \
--enable-exif \
--with-readline=/usr/local/Cellar/readline/8.1.2 \
--disable-ipv6
以上有些参数指定到了实际的库目录，如--with-iconv=/usr/local/Cellar/libiconv/1.16，这里我指定到我电脑里libiconv的实际安装目录，如果你电脑没有，可以使用homebrew进行安装
二、编译过程可能遇见的错误
编译的过程中首先可能会遇到以下第两个错误
- liconv相关
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Undefined symbols for architecture x86_64:
"_libiconv", referenced from:
_do_convert in gdkanji.o
_php_iconv_string in iconv.o
__php_iconv_strlen in iconv.o
_zif_iconv_substr in iconv.o
__php_iconv_strpos in iconv.o
_zif_iconv_mime_encode in iconv.o
__php_iconv_appendl in iconv.o
...
"_libiconv_close", referenced from:
_do_convert in gdkanji.o
_php_iconv_string in iconv.o
__php_iconv_strlen in iconv.o
_zif_iconv_substr in iconv.o
__php_iconv_strpos in iconv.o
_zif_iconv_mime_encode in iconv.o
__php_iconv_mime_decode in iconv.o
...
"_libiconv_open", referenced from:
_do_convert in gdkanji.o
_php_iconv_string in iconv.o
__php_iconv_strlen in iconv.o
_zif_iconv_substr in iconv.o
__php_iconv_strpos in iconv.o
_zif_iconv_mime_encode in iconv.o
__php_iconv_mime_decode in iconv.o
...
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [sapi/cli/php] Error 1
解决办法：我们手动打开源码目录下 configure命令 生成的Makefile文件，找到EXTRA_LIBS变量，将变量值中的-liconv这个参数替换为你实际安装的libiconv.dylib的绝对路径，如我的电脑使用homebrew安装，在我电脑里绝对路径是/usr/local/Cellar/libiconv/1.16/lib/libiconv.dylib。
- readline相关
可能遇到相关的错误如下
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Undefined symbols for architecture x86_64:
"_append_history", referenced from:
_readline_shell_run in readline_cli.o
"_history_list", referenced from:
_zif_readline_list_history in readline.o
"_rl_completion_suppress_append", referenced from:
_zif_readline_info in readline.o
"_rl_done", referenced from:
_zif_readline_info in readline.o
"_rl_mark", referenced from:
_zif_readline_info in readline.o
"_rl_pending_input", referenced from:
_zif_readline_info in readline.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [sapi/cli/php] Error 1
找到EXTRA_LIBS变量，将变量值中的-lreadline这个参数替换为你实际安装的libreadline.dylib的绝对路径，如/usr/local/Cellar/readline/8.1.2/lib/libreadline.dylib
- 最终修改后
修改了Makefile文件之后，最终的EXTRA_LIBS变量值如下
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EXTRA_LIBS = -lcrypto -lssl -lcrypto -lresolv /usr/local/Cellar/readline/8.1.2/lib/libreadline.dylib /usr/local/Cellar/libiconv/1.16/lib/libiconv.dylib /usr/local/Cellar/libiconv/1.16/lib/libiconv.dylib -lpng -lz -ljpeg -lbz2 -lz -lcrypto -lssl -lcrypto -lm -lxml2 -lz -licucore -lm -lcurl -lxml2 -lz -licucore -lm -lfreetype -lxml2 -lz -licucore -lm -lxml2 -lz -licucore -lm -lxml2 -lz -licucore -lm -lxml2 -lz -licucore -lm -lxml2 -lz -licucore -lm
三、编译与安装
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# 编译
make
# 安装
make install