diff options
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 26 |
1 files changed, 20 insertions, 6 deletions
diff --git a/configure.ac b/configure.ac index a273688..53a904e 100644 --- a/configure.ac +++ b/configure.ac @@ -323,17 +323,31 @@ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])], nopointersign_cflags="-Wno-pointer-sign", nopointersign_cflags="") CFLAGS="${saved_CFLAGS}" -dnl check for -std=gnu99 compiler support +dnl check for -std=gnu11 compiler support saved_CFLAGS="${CFLAGS}" -CFLAGS="-std=gnu99" -AC_MSG_CHECKING([whether CC supports -std=gnu99]) +CFLAGS="-std=gnu11" +AC_MSG_CHECKING([whether CC supports -std=gnu11]) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])], [AC_MSG_RESULT([yes]) - AM_CFLAGS="${AM_CFLAGS} -std=gnu99"], - [AC_MSG_RESULT([no])] -) + AM_CFLAGS="${AM_CFLAGS} -std=gnu11"], + [AC_MSG_RESULT([no])]) CFLAGS="${saved_CFLAGS}" +dnl check for _Thread_local compiler support +if test "x$backend" != xwindows; then + saved_CFLAGS="${CFLAGS}" + saved_LDFLAGS="${LDFLAGS}" + CFLAGS="${CFLAGS} -fPIC" + LDFLAGS="${LDFLAGS} -shared" + AC_MSG_CHECKING([whether CC supports _Thread_local]) + AC_LINK_IFELSE([AC_LANG_PROGRAM([], [static _Thread_local int v])], + [AC_MSG_RESULT([yes]) + AC_DEFINE([HAVE_CC_THREAD_LOCAL], [1], [Define to 1 if the compiler supports _Thread_local.])], + [AC_MSG_RESULT([no])]) + CFLAGS="${saved_CFLAGS}" + LDFLAGS="${saved_LDFLAGS}" +fi + AM_CFLAGS="${AM_CFLAGS} -Wall -Wundef -Wunused -Wstrict-prototypes -Werror-implicit-function-declaration ${nopointersign_cflags} -Wshadow ${THREAD_CFLAGS} ${VISIBILITY_CFLAGS}" AC_SUBST(AM_CFLAGS) |