65/87: gnu: tcc-musl: Update build flags for multiple architectures.

[guix-commits]

efraim pushed a commit to branch wip-riscv-bootstrap
in repository guix.

commit c7f5bb6143493ff1ed59e111df50d6a7df99d05a
Author: Efraim Flashner <efraim@flashner.co.il>
AuthorDate: Sun Nov 24 11:57:34 2024 +0200

    gnu: tcc-musl: Update build flags for multiple architectures.
    
    * gnu/packages/commencement.scm (tcc-musl)[arguments]: Adjust the custom
    'build phase to provide necessary architecture specific flags.
    
    Change-Id: I1e506cceae26f8a24336d36f94211d9a8923c491
---
 gnu/packages/commencement.scm | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/gnu/packages/commencement.scm b/gnu/packages/commencement.scm
index 54402d7963..66e31febec 100644
--- a/gnu/packages/commencement.scm
+++ b/gnu/packages/commencement.scm
@@ -1062,8 +1062,15 @@ MesCC-Tools), and finally M2-Planet.")
                     "tcc"
                     "-g"
                     "-vvv"
-                    "-D" "REG_PC=0"
-                    "-D" "REG_S0=8"
+                    ;; Some missed bits from musl in arch/$ARCH/bits/signal.h
+                    #$@(cond
+                         ((target-riscv64?)
+                          #~("-D" "REG_PC=0"
+                             "-D" "REG_S0=8"))
+                         ((target-x86-64?)
+                          #~("-D" "REG_EBP=6"
+                             "-D" "REG_EIP=14"))
+                         (#t #~()))
                     "-D" "ONE_SOURCE=1"
                     "-D" "TCC_VERSION=\"0.9.28rc\""
                     "-D" "CONFIG_TCC_STATIC=1"