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* [gcc r14-3803] LoongArch: Adjust C++ multilib header layout.
@ 2023-09-08 9:51 LuluCheng
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From: LuluCheng @ 2023-09-08 9:51 UTC (permalink / raw)
To: gcc-cvs, libstdc++-cvs
https://gcc.gnu.org/g:62a550e7ec9a524f67344bc12634bff2a2054d72
commit r14-3803-g62a550e7ec9a524f67344bc12634bff2a2054d72
Author: Yang Yujie <yangyujie@loongson.cn>
Date: Thu Sep 7 14:50:10 2023 +0800
LoongArch: Adjust C++ multilib header layout.
For LoongArch, the toplevel library build is always aliased to
one of the multilib variants. This patch installs it with the
actual MULTISUBDIR (instead of ".") so that the headers can be
reached by the compiler.
This patch is an update of
https://gcc.gnu.org/pipermail/gcc-patches/2023-September/629435.html
libstdc++-v3/ChangeLog:
* configure.host: Register t-loongarch in tmake_file.
* config/cpu/loongarch/t-loongarch: New file. Manually refresh
MULTISUBDIR with $(shell $(CXX) --print-multi-directory).
Diff:
---
libstdc++-v3/config/cpu/loongarch/t-loongarch | 1 +
libstdc++-v3/configure.host | 5 ++++-
2 files changed, 5 insertions(+), 1 deletion(-)
diff --git a/libstdc++-v3/config/cpu/loongarch/t-loongarch b/libstdc++-v3/config/cpu/loongarch/t-loongarch
new file mode 100644
index 000000000000..adfc8ebb93e9
--- /dev/null
+++ b/libstdc++-v3/config/cpu/loongarch/t-loongarch
@@ -0,0 +1 @@
+AM_MAKEFLAGS += " MULTISUBDIR=/$(shell $(CXX) --print-multi-directory)"
diff --git a/libstdc++-v3/configure.host b/libstdc++-v3/configure.host
index 9e7c7f02dfd1..9dc42ad3edb5 100644
--- a/libstdc++-v3/configure.host
+++ b/libstdc++-v3/configure.host
@@ -315,7 +315,10 @@ esac
# Set any OS-dependent and CPU-dependent bits.
# THIS TABLE IS SORTED. KEEP IT THAT WAY.
case "${host}" in
- *-*-linux* | *-*-uclinux*)
+ loongarch*)
+ tmake_file="cpu/loongarch/t-loongarch"
+ ;;
+ *-*-linux* | *-*-uclinux*)
case "${host_cpu}" in
i[567]86)
abi_baseline_pair=i486-linux-gnu
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