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Otherwise callers may expect to be able to re-use result variables.
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Otherwise some compilers will incorrectly fail the checks when certain
warning/error flags are enabled.
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Prior to the existence of the if(DEFINED) condition, many of our Check
modules implemented the condition with a hack that takes advantage of
the auto-dereference behavior of the if() command to detect if a
variable is defined. The hack has the form:
if("${VAR} MATCHES "^${VAR}$")
where "${VAR}" is a macro argument reference. However, this does not
work when the variable named in the macro argument contains characters
that have special meaning in regular expressions, such as '+'. Run the
command
git grep -E 'if\("\$\{.*\}" MATCHES "\^\$\{.*\}\$"\)' -- Modules/Check*
to identify lines with this problem. Use if(NOT DEFINED) instead.
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Setting this flag can silence messages from the Check*.cmake modules.
This can be used by Find*.cmake modules when they are in silent mode.
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Since commit 7d47c693 (Drop compatibility with CMake < 2.4, 2013-10-08)
we no longer need to use the configure_file IMMEDIATE option to support
compatibility modes less than 2.0.
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Run the convert-help.bash script to convert documentation:
./convert-help.bash "/path/to/CMake-build/bin"
Then remove it.
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Other messages don't have one.
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Ancient versions of CMake required else(), endif(), and similar block
termination commands to have arguments matching the command starting the
block. This is no longer the preferred style.
Run the following shell code:
for c in else endif endforeach endfunction endmacro endwhile; do
echo 's/\b'"$c"'\(\s*\)(.\+)/'"$c"'\1()/'
done >convert.sed &&
git ls-files -z -- bootstrap '*.cmake' '*.cmake.in' '*CMakeLists.txt' |
egrep -z -v '^(Utilities/cm|Source/kwsys/)' |
egrep -z -v 'Tests/CMakeTests/While-Endwhile-' |
xargs -0 sed -i -f convert.sed &&
rm convert.sed
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Ancient CMake versions required upper-case commands. Later command
names became case-insensitive. Now the preferred style is lower-case.
Run the following shell code:
cmake --help-command-list |
grep -v "cmake version" |
while read c; do
echo 's/\b'"$(echo $c | tr '[:lower:]' '[:upper:]')"'\(\s*\)(/'"$c"'\1(/g'
done >convert.sed &&
git ls-files -z -- bootstrap '*.cmake' '*.cmake.in' '*CMakeLists.txt' |
egrep -z -v '^(Utilities/cm|Source/kwsys/)' |
xargs -0 sed -i -f convert.sed &&
rm convert.sed
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Our Git commit hooks disallow modification or addition of lines with
trailing whitespace. Wipe out all remnants of trailing whitespace
everywhere except third-party code.
Run the following shell code:
git ls-files -z -- \
bootstrap doxygen.config '*.readme' \
'*.c' '*.cmake' '*.cpp' '*.cxx' \
'*.el' '*.f' '*.f90' '*.h' '*.in' '*.in.l' '*.java' \
'*.mm' '*.pike' '*.py' '*.txt' '*.vim' |
egrep -z -v '^(Utilities/cm|Source/(kwsys|CursesDialog/form)/)' |
egrep -z -v '^(Modules/CPack\..*\.in)' |
xargs -0 sed -i 's/ \+$//'
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Since commit 44d007b6 (CheckIncludeFiles: fix status output, 2012-02-01)
check_include_files reports the list of files tested instead of the name
of the variable storing the result. Some projects incrementally test
and concatenate very long lists leading to long messages that do not
provide much information. Users report confusion especially when the
lines wrap.
For lists of more than two files produce messages of the format
Looing for N include files first.h, ..., last.h
where N is the list length and "..." is literal. Leave the log file
entries and cache entry description unchanged as they should have the
full detail of the check performed.
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CHECK_INCLUDE_FILES("foo.h" HAVE_FOO_H) gave an output like:
Looking for include files HAVE_FOO_H
After this change it does now what CHECK_INCLUDE_FILE() also does:
Looking for include files foo.h
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This adds copyright/license notification blocks CMake's non-find
modules. Most of the modules had no notices at all. Some had notices
referring to the BSD license already. This commit normalizes existing
notices and adds missing notices.
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CMAKE_REQUIRED_DEFINITIONS option.
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Close Bug #136 - Verify that all modules that do try compile produce CMakeError.log and CMakeOutput.log
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MAKE_DIRECTORY with FILE(MAKE_DIRECTORY, replace STRING(ASCII things
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