From 284d12a426879a61adc61fb210e35b01f1a1e1ad Mon Sep 17 00:00:00 2001
From: Eisuke Kawashima <15070-e-kwsm@users.noreply.gitlab.com>
Date: Tue, 4 May 2021 02:43:34 +0900
Subject: Fujitsu: Make explicit Fortran preprocessing under Ninja more robust

Tell the Fortran compiler to write preprocessor output directly to a
file, as we do for the GNU compiler.  The previous "redirect stdout"
approach could break checks using flags that add information to stdout
when called with `-###`.

Fixes: #22156
---
 Modules/Compiler/Fujitsu-Fortran.cmake | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Modules/Compiler/Fujitsu-Fortran.cmake b/Modules/Compiler/Fujitsu-Fortran.cmake
index 0f687bc..face2d6 100644
--- a/Modules/Compiler/Fujitsu-Fortran.cmake
+++ b/Modules/Compiler/Fujitsu-Fortran.cmake
@@ -5,7 +5,7 @@ set(CMAKE_Fortran_SUBMODULE_SEP ".")
 set(CMAKE_Fortran_SUBMODULE_EXT ".smod")
 
 set(CMAKE_Fortran_PREPROCESS_SOURCE
-  "<CMAKE_Fortran_COMPILER> <DEFINES> <INCLUDES> <FLAGS> -Cpp -E <SOURCE> > <PREPROCESSED_SOURCE>")
+  "<CMAKE_Fortran_COMPILER> <DEFINES> <INCLUDES> <FLAGS> -Cpp -P <SOURCE> -o <PREPROCESSED_SOURCE>")
 set(CMAKE_Fortran_COMPILE_OPTIONS_PREPROCESS_ON "-Cpp")
 
 set(CMAKE_Fortran_FORMAT_FIXED_FLAG "-Fixed")
-- 
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