projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| e6ebd2e4 | 1 | GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory. |
| bbaf00a6 | 2 | # Local configure fragment for sysdeps/s390. |
| e6ebd2e4 | 3 | |
| e6ebd2e4 UD |
4 | dnl It is always possible to access static and hidden symbols in an |
| 5 | dnl position independent way. | |
| 6 | AC_DEFINE(PI_STATIC_AND_HIDDEN) | |
| 4fa8bc3b SL |
7 | |
| 8 | dnl Accept as 2.24 or newer. | |
| 9 | AC_CHECK_PROG_VER(AS, $AS, --version, | |
| 10 | [GNU assembler.* \([0-9]*\.[0-9.]*\)], | |
| 11 | [2.2[4-9]*|2.[3-9][0-9]*|[3-9].*|[1-9][0-9]*], critic_missing="$critic_missing The program AS is required in version >= 2.24 for target S390.") | |
| 12 | ||
| 5a414ff7 DV |
13 | |
| 14 | AC_CACHE_CHECK(for __builtin_tbegin, libc_cv_gcc_builtin_tbegin, [dnl | |
| 15 | cat > conftest.c <<\EOF | |
| 16 | #include <htmintrin.h> | |
| 17 | void testtransaction () | |
| 18 | { | |
| 19 | if (__builtin_tbegin (0) == _HTM_TBEGIN_STARTED) | |
| 20 | { | |
| 21 | __builtin_tend (); | |
| 22 | } | |
| 23 | } | |
| 24 | EOF | |
| 25 | dnl | |
| 26 | dnl test, if the tbegin instruction is used by __builtin_tbegin | |
| 27 | if AC_TRY_COMMAND([${CC-cc} -mhtm -O2 -S conftest.c -o - | grep -w tbegin > /dev/null]) ; | |
| 28 | then | |
| 29 | libc_cv_gcc_builtin_tbegin=yes | |
| 30 | else | |
| 31 | libc_cv_gcc_builtin_tbegin=no | |
| 32 | fi | |
| 33 | rm -f conftest* ]) | |
| 34 | ||
| 35 | if test "$enable_lock_elision" = yes && test "$libc_cv_gcc_builtin_tbegin" = no ; then | |
| 36 | critic_missing="$critic_missing The used GCC has no support for __builtin_tbegin, which is needed for lock-elision on target S390." | |
| 37 | fi | |
| 38 | ||
| 4f0a1cea SL |
39 | |
| 40 | AC_CACHE_CHECK(for S390 vector instruction support, libc_cv_asm_s390_vx, [dnl | |
| 41 | cat > conftest.c <<\EOF | |
| 42 | void testvecinsn () | |
| 43 | { | |
| 44 | __asm__ (".machine \"z13\" \n\t" | |
| 45 | ".machinemode \"zarch_nohighgprs\" \n\t" | |
| 46 | "vistrbs %%v16,%%v17 \n\t" | |
| 47 | "locghie %%r1,0" : :); | |
| 48 | } | |
| 49 | EOF | |
| 50 | dnl | |
| 51 | dnl test, if assembler supports S390 vector instructions | |
| 52 | if AC_TRY_COMMAND([${CC-cc} --shared conftest.c -o conftest.o &> /dev/null]) ; | |
| 53 | then | |
| 54 | libc_cv_asm_s390_vx=yes | |
| 55 | else | |
| 56 | libc_cv_asm_s390_vx=no | |
| 57 | fi | |
| 58 | rm -f conftest* ]) | |
| 59 | ||
| 60 | if test "$libc_cv_asm_s390_vx" = yes ; | |
| 61 | then | |
| 62 | AC_DEFINE(HAVE_S390_VX_ASM_SUPPORT) | |
| 63 | else | |
| 64 | AC_MSG_WARN([Use binutils with vector-support in order to use optimized implementations.]) | |
| 65 | fi | |
| 66 | ||
| 67 | ||
| 4fa8bc3b SL |
68 | test -n "$critic_missing" && AC_MSG_ERROR([ |
| 69 | *** $critic_missing]) |