commit:     939f10540fec60b4b22708ebd89610d95ff2097d
Author:     Mike Gilbert <floppym <AT> gentoo <DOT> org>
AuthorDate: Tue May  9 20:22:13 2023 +0000
Commit:     Mike Gilbert <floppym <AT> gentoo <DOT> org>
CommitDate: Tue May  9 20:22:13 2023 +0000
URL:        https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=939f1054

sys-boot/grub: backport build fix for RISCV

Closes: https://bugs.gentoo.org/905785
Signed-off-by: Mike Gilbert <floppym <AT> gentoo.org>

 sys-boot/grub/files/grub-2.06-riscv.patch | 49 +++++++++++++++++++++++++++++++
 sys-boot/grub/grub-2.06-r6.ebuild         |  1 +
 2 files changed, 50 insertions(+)

diff --git a/sys-boot/grub/files/grub-2.06-riscv.patch 
b/sys-boot/grub/files/grub-2.06-riscv.patch
new file mode 100644
index 000000000000..83c54375704b
--- /dev/null
+++ b/sys-boot/grub/files/grub-2.06-riscv.patch
@@ -0,0 +1,49 @@
+https://bugs.gentoo.org/905785
+
+From 049efdd72eb7baa7b2bf8884391ee7fe650da5a0 Mon Sep 17 00:00:00 2001
+From: Heinrich Schuchardt <[email protected]>
+Date: Sat, 29 Jan 2022 13:36:55 +0100
+Subject: RISC-V: Adjust -march flags for binutils 2.38
+
+As of version 2.38 binutils defaults to ISA specification version
+2019-12-13. This version of the specification has has separated the
+the csr read/write (csrr*/csrw*) instructions and the fence.i from
+the I extension and put them into separate Zicsr and Zifencei
+extensions.
+
+This implies that we have to adjust the -march flag passed to the
+compiler accordingly.
+
+Signed-off-by: Heinrich Schuchardt <[email protected]>
+Reviewed-by: Daniel Kiper <[email protected]>
+---
+ configure.ac | 8 ++++++++
+ 1 file changed, 8 insertions(+)
+
+diff --git a/configure.ac b/configure.ac
+index 4f649ed..5c01af0 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -870,11 +870,19 @@ if test x"$platform" != xemu ; then
+        CFLAGS="$TARGET_CFLAGS -march=rv32imac -mabi=ilp32 -Werror"
+        AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
+                        [grub_cv_target_cc_soft_float="-march=rv32imac 
-mabi=ilp32"], [])
++       # ISA spec version 20191213 factored out extensions Zicsr and Zifencei
++       CFLAGS="$TARGET_CFLAGS -march=rv32imac_zicsr_zifencei -mabi=ilp32 
-Werror"
++       AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
++                       
[grub_cv_target_cc_soft_float="-march=rv32imac_zicsr_zifencei -mabi=ilp32"], [])
+     fi
+     if test "x$target_cpu" = xriscv64; then
+        CFLAGS="$TARGET_CFLAGS -march=rv64imac -mabi=lp64 -Werror"
+        AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
+                        [grub_cv_target_cc_soft_float="-march=rv64imac 
-mabi=lp64"], [])
++       # ISA spec version 20191213 factored out extensions Zicsr and Zifencei
++       CFLAGS="$TARGET_CFLAGS -march=rv64imac_zicsr_zifencei -mabi=lp64 
-Werror"
++       AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
++                       
[grub_cv_target_cc_soft_float="-march=rv64imac_zicsr_zifencei -mabi=lp64"], [])
+     fi
+     if test "x$target_cpu" = xia64; then
+        CFLAGS="$TARGET_CFLAGS -mno-inline-float-divide -mno-inline-sqrt 
-Werror"
+-- 
+cgit v1.1
+

diff --git a/sys-boot/grub/grub-2.06-r6.ebuild 
b/sys-boot/grub/grub-2.06-r6.ebuild
index ee01fcc6bfeb..707acec900be 100644
--- a/sys-boot/grub/grub-2.06-r6.ebuild
+++ b/sys-boot/grub/grub-2.06-r6.ebuild
@@ -62,6 +62,7 @@ PATCHES=(
        "${FILESDIR}"/grub-2.06-grub-mkconfig-restore-umask.patch
        
"${FILESDIR}"/grub-2.06-gentpl.py-Remove-.interp-section-from-.img-files.patch
        "${FILESDIR}"/grub-2.06-fs-ext2-ignore-checksum-seed.patch
+       "${FILESDIR}"/grub-2.06-riscv.patch
 )
 
 DEJAVU=dejavu-sans-ttf-2.37

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