Avoid full metrics computation with Update:FitCursor

[lyx.git] / INSTALL

diff --git a/INSTALL b/INSTALL
index 8f2836c742037cf5d7a1f007768b8a211917c643..9496fc16c78574805b43e9e88b178838e582ddb6 100644 (file)
--- a/INSTALL
+++ b/INSTALL
@@ -55,12 +55,12 @@ Requirements
 First of all, you will need a C++11 standard conforming compiler, like g++ (at
 least 4.9, to have proper srd::regex) or clang++.
 
-LyX makes great use of the C++ Standard Template Library (STL).
-This means that gcc users will have to install the relevant libstdc++
-library to be able to compile this version of LyX.
+LyX makes great use of the C++ Standard Library. This means that gcc
+users will have to install the relevant libstdc++ library to be able
+to compile this version of LyX.
 
 For full LyX usability we suggest to use Qt 5.6 and higher, or at the
-very least Qt 5.4. It is also possible to compile against Qt 6.The
+very least Qt 5.4. It is also possible to compile against Qt 6. The
 only special point to make is that you must ensure that both LyX and
 the Qt libraries are compiled with the same C++ compiler.
 
@@ -107,7 +107,7 @@ flags:
     the settings in terms of various options that are described later
 
                       release   prerelease  development profiling gprof
-    optimization        -O2         -O2         -O         -O2     -O2
+    optimization        -O2         -O2         -Og        -O2     -O2
     assertions                       X           X
     stdlib-assertions                            X
     stdlib-debug
@@ -208,15 +208,16 @@ precisely (see the description of --enable-build-type for the default
 values):
 
   o --enable-cxx-mode=VALUE can be used to select a C++ standard, for
-    example --enable-cxx-mode=11. The default is to try C++14, and then
-    C++11.
+    example --enable-cxx-mode=11. The default is to try C++17, C++14, and
+    C++11, in this order.
 
   o --enable-optimization=VALUE enables you to set optimization to a
     higher level than the default, for example --enable-optimization=-O3.
+    Default is -Og when debugging is enabled, -O2 otherwise.
 
   o --disable-optimization - you can use this to disable compiler
     optimization of LyX. The compile may be much quicker with some
-    compilers, but LyX will run more slowly.
+    compilers, but LyX will be slower.
 
   o --enable-debug will add debug information to your binary. This
     requires a lot more disk space, but is a must if you want to try