RE: [RFC] building postgres with meson - v13

Hi,

I tried to use meson and ninja and they are really efficient.
But when I tried to specify "c_args", it did not take effect.

Attached my steps:
[In the HEAD (7d708093b7)]
$ meson setup build --prefix /home/wangw/install/parallel_apply/ -Dcassert=true -Dtap_tests=enabled -Dicu=enabled -Dc_args='-fno-omit-frame-pointer'

Log:
......
Compiler Flags
CPP FLAGS : -D_GNU_SOURCE
C FLAGS, functional: -fno-strict-aliasing -fwrapv -fexcess-precision=standard
C FLAGS, warnings : -Wmissing-prototypes -Wpointer-arith -Werror=vla -Wendif-labels -Wmissing-format-attribute -Wimplicit-fallthrough=3 -Wcast-function-type -Wformat-security -Wdeclaration-after-statement -Wno-format-truncation -Wno-stringop-truncation
......

After I made the below modifications, the specified "c_args" took effect.
```
@@ -2439,6 +2439,10 @@ endif

# Set up compiler / linker arguments to be used everywhere, individual targets
# can add further args directly, or indirectly via dependencies
+
+tmp_c_args = get_option('c_args')
+cflags += tmp_c_args
+
add_project_arguments(cflags, language: ['c'])
add_project_arguments(cppflags, language: ['c'])
add_project_arguments(cflags_warn, language: ['c'])
```

I might missed something. Just to confirm is there another way to add CFLAG ?

Regards,
Wang wei