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riscv: autotools update

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This commit is contained in:
Filip Wasil 2025-05-19 12:44:35 +02:00
parent 0e37c0b477
commit 611bf1016c
3 changed files with 35 additions and 10 deletions
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2
INSTALL
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@ -136,7 +136,7 @@ Your directory structure should look like this:
depcomp, install-sh, mkinstalldirs, test-pngtest.sh, etc.
contrib
arm-neon, conftest, examples, gregbook, libtests, pngminim,
pngminus, pngsuite, tools, visupng, riscv-vector
pngminus, pngsuite, tools, visupng, riscv-rvv
projects
owatcom, visualc71, vstudio
scripts

2
README
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@ -163,7 +163,7 @@ Files included in this distribution
programs demonstrating the use of pngusr.dfa
pngminus/ => Simple pnm2png and png2pnm programs
pngsuite/ => Test images
riscv-vector/ => Optimized code for the RISC-V Vector platform
riscv-rvv/ => Optimized code for the RISC-V Vector platform
testpngs/ => Test images
tools/ => Various tools
visupng/ => VisualPng, a Windows viewer for PNG images

41
configure.ac
View File

@ -377,7 +377,8 @@ AC_ARG_ENABLE([hardware-optimizations],
enable_loongarch_lsx=yes
AC_DEFINE([PNG_LOONGARCH_LSX_OPT], [1],
[Enable LOONGARCH_LSX optimizations])
riscv*)
;;
riscv64)
enable_riscv_rvv=yes
AC_DEFINE([PNG_RISCV_RVV_OPT], [2],
[Enable RISC-V Vector optimizations])
@ -673,7 +674,7 @@ AM_CONDITIONAL([PNG_LOONGARCH_LSX],
#
# RISC-V Vector support.
AC_ARG_ENABLE([riscv-vector],
AC_ARG_ENABLE([riscv-rvv],
AS_HELP_STRING([[[--enable-riscv-rvv]]],
[Enable RISC-V Vector optimizations: =no/off, check, api, yes/on:]
[no/off: disable the optimizations; check: use internal checking code]
@ -690,7 +691,7 @@ AS_HELP_STRING([[[--enable-riscv-rvv]]],
check)
AC_DEFINE([PNG_RISCV_RVV_CHECK_SUPPORTED], [],
[Check for RISC-V Vector support at run-time])
AC_MSG_WARN([--enable-riscv-rvv Please check contrib/riscv-vector/README file]
AC_MSG_WARN([--enable-riscv-rvv Please check contrib/riscv-rvv/README file]
[for the list of supported OSes.]);;
api)
AC_DEFINE([PNG_RISCV_RVV_API_SUPPORTED], [],
@ -699,20 +700,44 @@ AS_HELP_STRING([[[--enable-riscv-rvv]]],
AC_DEFINE([PNG_RISCV_RVV_OPT], [2],
[Enable RISC-V Vector optimizations])
AC_MSG_WARN([--enable-riscv-rvv: please specify 'check' or 'api', if]
[you want the optimizations unconditionally pass e.g. '-march=rv64gcv']
[you want the optimizations unconditionally pass e.g. '-march=rv64gv']
[to the compiler.]);;
*)
AC_MSG_ERROR([--enable-riscv-rvv=${enable_riscv_rvv}: invalid value])
esac])
# Add RISC-V-specific files to all builds where $host_cpu is riscv ('riscv*')
if test "$enable_riscv_rvv" != "no" &&
case "$host_cpu" in
riscv64) : ;;
*) test "$enable_riscv_rvv" != '' ;;
esac
then
compiler_support_riscv_rvv=no
AC_MSG_CHECKING(whether to use RISC-V RVV intrinsics)
AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
#include <riscv_vector.h>
int main(){
return 0;
}]])],compiler_support_riscv_rvv=yes)
AC_MSG_RESULT($compiler_support_riscv_rvv)
if test "$compiler_support_riscv_rvv" = "yes"; then
AC_DEFINE([PNG_RISCV_RVV_OPT], [1],
[Enable RISCV RVV optimizations])
else
AC_MSG_WARN([Compiler does not support riscv rvv.])
fi
fi
# Add RISC-V-specific files to all builds where $host_cpu is riscv ('riscv64')
# or where RISC-V optimizations were explicitly requested (this allows a fallback
# if a future host CPU does not match 'riscv*')
# if a future host CPU does not match 'riscv64')
AM_CONDITIONAL([PNG_RISCV_RVV],
[test "$enable_riscv_rvv" != 'no' &&
[test "$enable_riscv_rvv" != "no" &&
test "$compiler_support_riscv_rvv" = "yes" &&
case "$host_cpu" in
riscv*) : ;;
riscv64) : ;;
*) test "$compiler_support_riscv_rvv" != '' ;;
esac])
AC_MSG_NOTICE([[Extra options for compiler: $PNG_COPTS]])