Comments (6)
crazywhalecc
commented on June 1, 2024
这个 patch 只是方便，不是每次都必须替换的。需要时候才替换，不需要的时候就不调用了。大部分情况的标准库都是默认的，所以这里的 patch pkgconfig 方法只是偶然内聚的结果。
头文件名称相同有案例吗？如果目前没有的话就维持现状，这里没必要大动干戈，再不济还可以对冲突的库设置 --includedir 参数来安装。
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jingjingxyk
commented on June 1, 2024
@crazywhalecc 这不是需不需要的问题啊，而是需要的时候，没有。
看例子： libpq源码里 引用 openssl 。直接引用的是 openssl/ssl.h
vi src/include/libpq/libpq-be.h
#ifdef USE_OPENSSL
#include <openssl/ssl.h>
#include <openssl/err.h>
#include "postgres.h"
#ifdef USE_LIBXML
#include <libxml/chvalid.h>
#include <libxml/parser.h>
#include <libxml/parserInternals.h>
#include <libxml/tree.h>
#include <libxml/uri.h>
#include <libxml/xmlerror.h>
#include <libxml/xmlversion.h>
#include <libxml/xmlwriter.h>
#include <libxml/xpath.h>
#include <libxml/xpathInternals.h>
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crazywhalecc
commented on June 1, 2024
我没有搞懂你说的意思。你是说有的库的 .h 文件不能被 pkgconfig 内提供的参数覆盖吗？而且即使是你提到的这个 openssl 和 libxml2 的问题其实是不存在的，例如引入 openssl 时 Cflag 就是 -I"buildroot/include" 目录，在编译时使用 #include <openssl/ssl.h> 就会自动寻找 buildroot/include/openssl/ssl.h 这个文件，并不存在你说的引用问题，而且其他库都是这么引用的，例如 curl：#if defined(USE_OPENSSL) # include <openssl/ssl.h>。在 libxml2 中也是如此，这些提供 ABI 的开源通用库都一般不会存在这类很显著的问题的，要不然一个成熟的 Linux 发行版把所有软件的头文件放到 /usr/include 目录不是早冲突了。
如果你遇到了此类问题并无法解决，我建议你先贴出来你做了什么，config.log 显示到哪步报错，是哪个参数或变量缺失导致的，我补充上什么参数就能 working 了。否则因为引入新的依赖库时破坏了大量旧的依赖库结构其实是一种破坏性更新行为，除非旧的逻辑真的有 Bug。
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jingjingxyk
commented on June 1, 2024
@crazywhalecc 需求就是把这个 #84 跑起来，不想要 patch ，也不想添加其他代码
当前状况是，如果不修改其他库，构建PGSQL 预处理这一步通不过。构建PGSQL ，预处理遇到的第一个问题是：xml2-config ，然后是openssl 头文件 。然后是icu
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jingjingxyk
commented on June 1, 2024
去掉大部分 PATCH 的关键代码： 包括curl 的patch
$builddir = BUILD_ROOT_PATH;
$cppflags = '';
$ldflags = '';
$libs = '';
if (!empty($this->pkg_config_packages)) {
$packages = implode(' ', $this->pkg_config_packages);
$output = shell()->execWithResult($envs . ' pkg-config --libs-only-l --static ' . $packages);
if (!empty($output[1][0])) {
$libs = $output[1][0];
logger()->info('LIBS=' . $output[1][0]);
}
$output = shell()->execWithResult($envs . ' pkg-config --cflags-only-I --static ' . $packages);
if (!empty($output[1][0])) {
$cppflags = $output[1][0];
logger()->info('CPPFLAGS=' . $output[1][0]);
}
$output = shell()->execWithResult($envs . ' pkg-config --libs-only-L --static ' . $packages);
if (!empty($output[1][0])) {
$ldflags = $output[1][0];
logger()->info('LDFLAGS=' . $output[1][0]);
}
}
if ($this->getLib('libiconv')) {
$libs .= ' -liconv ';
}
if ($this->getLib('bzip2')) {
$libs .= ' -lbz2';
}
if ($this->getLib('icu')) {
$libs .= ' -lstdc++';
}
$envs .= " CPPFLAGS=\"-I{$builddir}/include/ {$cppflags}\" ";
$envs .= " LDFLAGS=\"-L{$builddir}/lib/ {$ldflags}\" ";
if (!empty($libs)) {
$envs .= " LIBS=\"{$libs} \" ";
}
if (!empty(trim($cflags))) {
$envs .= " CFLAGS='{$cflags} ";
}https://github.com/jingjingxyk/static-php-cli/blob/main/src/SPC/builder/linux/LinuxBuilder.php#L160
https://github.com/jingjingxyk/static-php-cli/blob/main/src/SPC/builder/unix/library/curl.php (cmake 默认链接都是动态库，使用package_name_ROOT 参数，申明静态库位置）
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crazywhalecc
commented on June 1, 2024
(cmake 默认链接都是动态库，使用package_name_ROOT 参数，申明静态库位置）
这里应该不存在这个问题。首先自编译的 pkg-config 可以限定库只从 buildroot 查找，其次输入的 cmake toolchain file 中也描述了只在指定的根目录下查找包，而 buildroot 只有静态库，所以不会连接到动态库。
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