From 5f728fc4dd3121aa4d2809a68629a6422b53e95c Mon Sep 17 00:00:00 2001
From: Cheng Shao <terrorjack@type.dance>
Date: Tue, 7 May 2024 20:35:47 +0000
Subject: [PATCH] hadrian: disable PIC for in-tree GMP on wasm32
This patch disables PIC for in-tree GMP on wasm32 target. Enabling PIC
unconditionally adds undesired code size and runtime overhead for
wasm32.
(cherry picked from commit f9c1ae122ec642c0d9236dffc971bc2d1ca38fba)
---
hadrian/src/Settings/Builders/Configure.hs | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/hadrian/src/Settings/Builders/Configure.hs b/hadrian/src/Settings/Builders/Configure.hs
index 49f49767291..83d60306728 100644
--- a/hadrian/src/Settings/Builders/Configure.hs
+++ b/hadrian/src/Settings/Builders/Configure.hs
@@ -15,7 +15,6 @@ configureBuilderArgs = do
targetPlatform <- queryTarget targetPlatformTriple
buildPlatform <- queryBuild targetPlatformTriple
pure $ [ "--enable-shared=no"
- , "--with-pic=yes"
, "--host=" ++ targetPlatform -- GMP's host is our target
, "--build=" ++ buildPlatform ]
-- Disable GMP's alloca usage on wasm32, it may
@@ -25,6 +24,10 @@ configureBuilderArgs = do
-- more detailed explanation of this configure
-- option.
<> [ "--enable-alloca=malloc-reentrant" | targetArch == "wasm32" ]
+ -- Enable PIC unless target is wasm32, in which
+ -- case we don't want libgmp.a to be bloated due
+ -- to PIC overhead.
+ <> [ "--with-pic=yes" | targetArch /= "wasm32" ]
, builder (Configure libffiPath) ? do
top <- expr topDirectory
--
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