X-Git-Url: https://git.lyx.org/gitweb/?a=blobdiff_plain;f=configure.ac;h=6a735b1a5ccf5e4be97b1b6cd1f9edff8cbb3f6a;hb=6f34a8a6407823d6ef746f484a3100392f45d988;hp=3b29b38257c663413ab2e8a0ef63ca2b2c697be9;hpb=0b09424017866d0f1d9dfff8cb54cedaf17b99aa;p=features.git

diff --git a/configure.ac b/configure.ac
index 3b29b38257..6a735b1a5c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -284,12 +284,15 @@ char * strerror(int n);
 #define BOOST_NO_WSTRING 1
 #define BOOST_SIGNALS_NO_DEPRECATION_WARNING 1
 
-// TR1 regex not supported in GCC <= 4.5
-#ifndef LYX_USE_TR1
-#  if __GNUC__ == 4 
-#    define LYX_USE_TR1
-#  endif
-#endif
+// <regex> in gcc is unusable in versions less than 4.9.0
+// see https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53631
+// clang defines __GNUC__ but how do the versions match?
+// disabled because of missing match_partial
+//#ifndef LYX_USE_STD_REGEX
+//#  if (__GNUC__ == 4 && __GNUC_MINOR__ >= 9) || __GNUC__ > 4 || defined(USE_LLVM_LIBCPP)
+//#    define LYX_USE_STD_REGEX
+//#  endif
+//#endif
 
 #ifdef __CYGWIN__
 #  define NOMINMAX