diff options
Diffstat (limited to 'sys-devel/autoconf/files/autoconf-2.71-AC_C_BIGENDIAN-lto.patch')
| -rw-r--r-- | sys-devel/autoconf/files/autoconf-2.71-AC_C_BIGENDIAN-lto.patch | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/sys-devel/autoconf/files/autoconf-2.71-AC_C_BIGENDIAN-lto.patch b/sys-devel/autoconf/files/autoconf-2.71-AC_C_BIGENDIAN-lto.patch new file mode 100644 index 000000000000..48fbdc6f544b --- /dev/null +++ b/sys-devel/autoconf/files/autoconf-2.71-AC_C_BIGENDIAN-lto.patch @@ -0,0 +1,50 @@ +https://git.savannah.gnu.org/cgit/autoconf.git/commit/?id=234fc6c86613ed3f366dd1d88996e4d5d85ee222 + +From 234fc6c86613ed3f366dd1d88996e4d5d85ee222 Mon Sep 17 00:00:00 2001 +From: Paul Eggert <eggert@cs.ucla.edu> +Date: Wed, 27 Jul 2022 08:53:35 -0700 +Subject: Port AC_C_BIGENDIAN to cross gcc -std=c11 -flto + +* lib/autoconf/c.m4 (AC_C_BIGENDIAN): Improve the +inherently-unportable grep trick well enough to survive gcc +-std=c11 -flto when cross-compiling (sr#110687). +--- a/lib/autoconf/c.m4 ++++ b/lib/autoconf/c.m4 +@@ -1838,8 +1838,8 @@ AC_DEFUN([AC_C_BIGENDIAN], + [ac_cv_c_bigendian=no], + [ac_cv_c_bigendian=yes], + [# Try to guess by grepping values from an object file. +- AC_COMPILE_IFELSE( +- [AC_LANG_PROGRAM( ++ AC_LINK_IFELSE( ++ [AC_LANG_SOURCE( + [[unsigned short int ascii_mm[] = + { 0x4249, 0x4765, 0x6E44, 0x6961, 0x6E53, 0x7953, 0 }; + unsigned short int ascii_ii[] = +@@ -1854,13 +1854,20 @@ AC_DEFUN([AC_C_BIGENDIAN], + int use_ebcdic (int i) { + return ebcdic_mm[i] + ebcdic_ii[i]; + } +- extern int foo; +- ]], +- [[return use_ascii (foo) == use_ebcdic (foo);]])], +- [if grep BIGenDianSyS conftest.$ac_objext >/dev/null; then ++ int ++ main (int argc, char **argv) ++ { ++ /* Intimidate the compiler so that it does not ++ optimize the arrays away. */ ++ char *p = argv[0]; ++ ascii_mm[1] = *p++; ebcdic_mm[1] = *p++; ++ ascii_ii[1] = *p++; ebcdic_ii[1] = *p++; ++ return use_ascii (argc) == use_ebcdic (*p); ++ }]])], ++ [if grep BIGenDianSyS conftest$ac_exeext >/dev/null; then + ac_cv_c_bigendian=yes + fi +- if grep LiTTleEnDian conftest.$ac_objext >/dev/null ; then ++ if grep LiTTleEnDian conftest$ac_exeext >/dev/null ; then + if test "$ac_cv_c_bigendian" = unknown; then + ac_cv_c_bigendian=no + else +cgit v1.1 |