diff options
Diffstat (limited to 'src/configure.ac')
| -rw-r--r-- | src/configure.ac | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/src/configure.ac b/src/configure.ac index 1706a8d9a..113fad1d2 100644 --- a/src/configure.ac +++ b/src/configure.ac @@ -67,8 +67,8 @@ dnl clang-500.2.75 or around has abandoned -f[no-]strength-reduce and issues a dnl warning when that flag is passed to. Accordingly, adjust CFLAGS based on dnl the version number of the clang in use. dnl Note that this does not work to get the version of clang 3.1 or 3.2. -AC_MSG_CHECKING(for recent clang version) -CLANG_VERSION_STRING=`$CC --version 2>/dev/null | sed -n -e 's/^.*clang.*\([[0-9]][[0-9]]*\.[[0-9]][[0-9]]*\.[[0-9]][[0-9]]*\).*$/\1/p'` +AC_MSG_CHECKING(for clang version) +CLANG_VERSION_STRING=`$CC --version 2>/dev/null | sed -n -e 's/^.*clang[[^0-9]]*\([[0-9]][[0-9]]*\.[[0-9]][[0-9]]*\.[[0-9]][[0-9]]*\).*$/\1/p'` if test x"$CLANG_VERSION_STRING" != x"" ; then CLANG_MAJOR=`echo "$CLANG_VERSION_STRING" | sed -n -e 's/\([[0-9]][[0-9]]*\)\.[[0-9]][[0-9]]*\.[[0-9]][[0-9]]*/\1/p'` CLANG_MINOR=`echo "$CLANG_VERSION_STRING" | sed -n -e 's/[[0-9]][[0-9]]*\.\([[0-9]][[0-9]]*\)\.[[0-9]][[0-9]]*/\1/p'` @@ -79,11 +79,15 @@ if test x"$CLANG_VERSION_STRING" != x"" ; then dnl change the constant 500002075 below appropriately. To get the dnl integer corresponding to a version number, refer to the dnl definition of CLANG_VERSION above. + AC_MSG_CHECKING(if clang supports -fno-strength-reduce) if test "$CLANG_VERSION" -ge 500002075 ; then - CFLAGS=`echo "$CFLAGS" | sed -n -e 's/-fno-strength-reduce/ /p'` + AC_MSG_RESULT(no) + CFLAGS=`echo "$CFLAGS" | sed -e 's/-fno-strength-reduce/ /'` + else + AC_MSG_RESULT(yes) fi else - AC_MSG_RESULT(no) + AC_MSG_RESULT(N/A) fi dnl If configure thinks we are cross compiling, there might be something @@ -3016,6 +3020,14 @@ dnl --------------------------------------------------------------------------- dnl end of GUI-checking dnl --------------------------------------------------------------------------- +AC_MSG_CHECKING([for /proc/self/exe]) +if test -L "/proc/self/exe"; then + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_PROC_SELF_EXE) +else + AC_MSG_RESULT(no) +fi + dnl Check for Cygwin, which needs an extra source file if not using X11 AC_MSG_CHECKING(for CYGWIN or MSYS environment) case `uname` in |