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From: "iains at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/114049] gcc.dg/framework-1.c FAILs with Xcode 15.3 beta
 3
Date: Thu, 22 Feb 2024 13:55:18 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D114049

--- Comment #5 from Iain Sandoe <iains at gcc dot gnu.org> ---
The manual currently says:
-I dir
-iquote dir
-isystem dir
-idirafter dir

Add the directory dir to the list of directories to be searched for header
files dur- ing preprocessing. If dir begins with =E2=80=98=3D=E2=80=99 or $=
SYSROOT, then the =E2=80=98=3D=E2=80=99
or $SYSROOT is replaced by the sysroot prefix; see --sysroot and -isysroot.

Directories specified with -iquote apply only to the quote form of the
directive, #include "file".

>>> Directories specified with -I, -isystem, or -idirafter apply to lookup =
for both the #include "file" and #include <file> directives. <<<

You can specify any number or combination of these options on the command l=
ine
to search for header files in several directories. The lookup order is as
follows:
1. Forthequoteformoftheincludedirective,thedirectoryofthecurrentfile is
searched first.
2. For the quote form of the include directive, the directories specified by
-iquote options are searched in left-to-right order, as they appear on the
command line.
3. Directories specified with -I options are scanned in left-to-right order.
4. Directories specified with -isystem options are scanned in left-to-right
order.
5. Standard system directories are scanned.
6. Directories specified with -idirafter options are scanned in left-to-rig=
ht=20

The highlighted bit seems to say we should be searching for either "" or <>=
 ..
I wonder if something is being confused by the user framework path (-F .)=