如何解决brew安装编译不过的问题

举例，如在macos 15.7下安装pkg-config会遇到以下错误:

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brew install  pkg-config

Last 15 lines from /Users/dany/Library/Logs/Homebrew/pkg-config/02.make:
gatomic.c:464:10: error: incompatible integer to pointer conversion passing 'gsize' (aka 'unsigned long') to parameter of type 'gpointer' (aka 'void *') [-Wint-conversion]
  464 |   return g_atomic_pointer_xor ((volatile gpointer *) atomic, val);
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
./gatomic.h:191:45: note: expanded from macro 'g_atomic_pointer_xor'
  191 |     (gsize) __sync_fetch_and_xor ((atomic), (val));                          \
      |                                             ^~~~~
4 errors generated.

解决办法，是加上--debug,如下：

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brew install --debug pkg-config

然后出错的时候，brew会提示你如下：

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make: *** [all] Error 2
/usr/local/Homebrew/Library/Homebrew/shims/shared/git --version
/usr/local/Homebrew/Library/Homebrew/shims/shared/curl --version
/usr/local/Homebrew/Library/Homebrew/ignorable.rb:29:in `block in raise'
BuildError: Failed executing: make
1. raise
2. ignore
3. backtrace
4. irb
5. shell

这个时候选择，shell.

然后 pwd

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bash-3.2$ pwd
/private/tmp/pkg-config-20260614-1862-jv8adw/pkg-config-0.29.2

然后使用如sublime之类的工具进行代码或者makefile的修改，如上面的例子，只需要加入-Wno-error=int-conversion

我们先export一个全局的变量

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bash-3.2$ export CFLAGS = "-Wno-error=int-conversion"

然后修改glib目录下的两个makefile也加入这个cflags,

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AUTOHEADER = ${SHELL} /private/tmp/pkg-config-20260614-1862-jv8adw/pkg-config-0.29.2/glib/missing autoheader
AUTOMAKE = ${SHELL} /private/tmp/pkg-config-20260614-1862-jv8adw/pkg-config-0.29.2/glib/missing automake-1.15
AWK = awk
CC = clang
CCDEPMODE = depmode=gcc3
CFLAGS = -g -O2 -Wno-error=int-conversion
CPP = clang -E

然后make && make install .

没有错之类，输入exit

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exit

然后，选择2 ignore

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bash-3.2$ exit
exit
1. raise
2. ignore
3. backtrace
4. irb
5. shell
Choose an action: 2
==> make install

然后继续，问题解决！