[gcc r15-9191] libstdc++, nvptx: Remove machinery to inject per-file flags

[Thomas Schwinge]

https://gcc.gnu.org/g:287f360b3e75a19c48ee14c71f51b6e7968474ef

commit r15-9191-g287f360b3e75a19c48ee14c71f51b6e7968474ef
Author: Thomas Schwinge <tschwinge@baylibre.com>
Date:   Wed Apr 2 11:05:08 2025 +0200

    libstdc++, nvptx: Remove machinery to inject per-file flags
    
    Not used anymore.
    
            libstdc++-v3/
            * config/cpu/nvptx/t-nvptx: Remove.
            * configure.host [nvptx]: Adjust.

Diff:
---
 libstdc++-v3/config/cpu/nvptx/t-nvptx | 1 -
 libstdc++-v3/configure.host           | 5 -----
 2 files changed, 6 deletions(-)

diff --git a/libstdc++-v3/config/cpu/nvptx/t-nvptx b/libstdc++-v3/config/cpu/nvptx/t-nvptx
deleted file mode 100644
index eacc5468d627..000000000000
--- a/libstdc++-v3/config/cpu/nvptx/t-nvptx
+++ /dev/null
@@ -1 +0,0 @@
-# Per-file flags, see '../../../configure.host', "inject per-file flags".
diff --git a/libstdc++-v3/configure.host b/libstdc++-v3/configure.host
index 0bed9dfff957..8375764bf4dc 100644
--- a/libstdc++-v3/configure.host
+++ b/libstdc++-v3/configure.host
@@ -374,11 +374,6 @@ case "${host}" in
      port_specific_symbol_files="\$(srcdir)/../config/os/gnu-linux/arm-eabi-extra.ver"
      ;;
   nvptx-*-none)
-    # For 'make all-target-libstdc++-v3', we need to inject per-file flags:
-    OPTIMIZE_CXXFLAGS="${OPTIMIZE_CXXFLAGS} \$(CXXFLAGS-\$(subdir)/\$@)"
-    # ..., see:
-    tmake_file="$tmake_file cpu/nvptx/t-nvptx"
-
     # For 'make all-target-libstdc++-v3', re 'alloca'/VLA usage:
     EXTRA_CFLAGS="${EXTRA_CFLAGS} -mfake-ptx-alloca"
     OPTIMIZE_CXXFLAGS="${OPTIMIZE_CXXFLAGS} -mfake-ptx-alloca"