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authorPatrik Hagglund <patrik.h.hagglund@ericsson.com>2013-02-04 08:15:53 +0000
committerPatrik Hagglund <patrik.h.hagglund@ericsson.com>2013-02-04 08:15:53 +0000
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Pass CPPFLAGS/CFLAGS/CXXFLAGS from the environment of configure to
Makefile.config. This is implied at the bottom of the help text of configure (besides CC/CXX/LDFLAGS, already passed to Makefile.config). For backward compatibility, the values of CFLAGS and CXXFLAGS defaults to empty, overriding the default values provided by autoconf (for example, '-g -O2' when CC=gcc'). $(CPP) is not used by our makefiles. Therefore, the value of CPP is not passed to Makefile.config, despite beeing mentioned by 'configure --help'. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174313 91177308-0d34-0410-b5e6-96231b3b80d8
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diff --git a/docs/MakefileGuide.rst b/docs/MakefileGuide.rst
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@@ -699,6 +699,9 @@ The override variables are given below:
``CFLAGS``
Additional flags to be passed to the 'C' compiler.
+``CPPFLAGS``
+ Additional flags passed to the C/C++ preprocessor.
+
``CXX``
Specifies the path to the C++ compiler.