COIN-OR::LEMON - Graph Library

Changeset 363:a637fb9d457b in lemon-1.2 for configure.ac


Ignore:
Timestamp:
11/05/08 15:44:37 (11 years ago)
Author:
Akos Ladanyi <ladanyi@…>
Branch:
default
Phase:
public
Message:

Revert to the canonical way of customizing CXXFLAGS

A default list of compiler flags is set via AM_CXXFLAGS Automake variable.
However this gets overridden by per-target CXXFLAGS variables (e.g.
foo_CXXFLAGS in case the foo target). Because of this you should append
$(AM_CXXFLAGS) to the end of the per-target CXXFLAGS variables (e.g.
foo_CXXFLAGS = ... $(AM_CXXFLAGS)).

After this default list of flags the contents of the CXXFLAGS user variable is
passed to the compiler. This variable has a default value determined by
configure (in case of g++ it is '-g -O2'). You can override this by specifying
CXXFLAGS when invoking make (e.g. make CXXFLAGS='-O3').

File:
1 edited

Legend:

Unmodified
Added
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  • configure.ac

    r310 r363  
    1919AC_CONFIG_SRCDIR([lemon/list_graph.h])
    2020AC_CONFIG_HEADERS([config.h lemon/config.h])
    21 
    22 lx_cmdline_cxxflags_set=${CXXFLAGS+set}
    2321
    2422dnl Do compilation tests using the C++ compiler.
     
    4745
    4846dnl Set custom compiler flags when using g++.
    49 if test x"$lx_cmdline_cxxflags_set" != x"set" -a "$GXX" = yes -a "$ICC" = no; then
    50   CXXFLAGS="$CXXFLAGS -Wall -W -Wall -W -Wunused -Wformat=2 -Wctor-dtor-privacy -Wnon-virtual-dtor -Wno-char-subscripts -Wwrite-strings -Wno-char-subscripts -Wreturn-type -Wcast-qual -Wcast-align -Wsign-promo -Woverloaded-virtual -Woverloaded-virtual -ansi -fno-strict-aliasing -Wold-style-cast -Wno-unknown-pragmas"
     47if test "$GXX" = yes -a "$ICC" = no; then
     48  WARNINGCXXFLAGS="-Wall -W -Wall -W -Wunused -Wformat=2 -Wctor-dtor-privacy -Wnon-virtual-dtor -Wno-char-subscripts -Wwrite-strings -Wno-char-subscripts -Wreturn-type -Wcast-qual -Wcast-align -Wsign-promo -Woverloaded-virtual -ansi -fno-strict-aliasing -Wold-style-cast -Wno-unknown-pragmas"
    5149fi
     50AC_SUBST([WARNINGCXXFLAGS])
    5251
    5352dnl Checks for libraries.
     
    114113echo
    115114echo C++ compiler.................. : $CXX
    116 echo C++ compiles flags............ : $CXXFLAGS
     115echo C++ compiles flags............ : $WARNINGCXXFLAGS $CXXFLAGS
    117116echo
    118117#echo GLPK support.................. : $lx_glpk_found
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