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Add cmake module finding the appropriate variant of the "restrict" keyword.

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Could that be useful to have in kdelibs/cmake/modules ?
This commit is contained in:
Benoit Jacob 2007-06-03 17:45:19 +00:00
parent 6d749c172a
commit f878711042
3 changed files with 99 additions and 10 deletions
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87
cmake/CheckRestrictKeyword.cmake Normal file
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@ -0,0 +1,87 @@
# This module checks if the C++ compiler supports the restrict keyword or
# some variant of it. The following variants are checked for in that order:
# 1. restrict (The standard C99 keyword, not yet in C++ standard)
# 2. __restrict (G++ has it)
# 3. __restrict__ (G++ has it too)
# 4. _Restrict (seems to be used by Sun's compiler)
# These four cases seem to cover all existing variants; however some C++
# compilers don't support any variant, in which case the _RESULT variable is
# set to empty value.
#
# Copyright Benoit Jacob 2007 <jacob@math.jussieu.fr>
#
# Redistribution and use is allowed according to the terms of the BSD license.
# For details see the accompanying COPYING-CMAKE-SCRIPTS file in
# kdelibs/cmake/modules.
INCLUDE(CheckCXXSourceCompiles)
MACRO (CHECK_RESTRICT_KEYWORD _RESULT)
SET(_CHECK_restrict_KEYWORD_SRC "
char f( const char * restrict x )
{
return *x;
}
int main(int argc, char *argv[]) { return 0; }
")
SET(_CHECK___restrict_KEYWORD_SRC "
char f( const char * __restrict x )
{
return *x;
}
int main(int argc, char *argv[]) { return 0; }
")
SET(_CHECK___restrict___KEYWORD_SRC "
char f( const char * __restrict__ x )
{
return *x;
}
int main(int argc, char *argv[]) { return 0; }
")
SET(_CHECK__Restrict_KEYWORD_SRC "
char f( const char * _Restrict x )
{
return *x;
}
int main(int argc, char *argv[]) { return 0; }
")
CHECK_CXX_SOURCE_COMPILES("${_CHECK_restrict_KEYWORD_SRC}"
HAVE_KEYWORD_restrict)
IF(HAVE_KEYWORD_restrict)
SET(${_RESULT} restrict)
ELSE(HAVE_KEYWORD_restrict)
CHECK_CXX_SOURCE_COMPILES("${_CHECK___restrict_KEYWORD_SRC}"
HAVE_KEYWORD___restrict)
IF(HAVE_KEYWORD___restrict)
SET(${_RESULT} __restrict)
ELSE(HAVE_KEYWORD___restrict)
CHECK_CXX_SOURCE_COMPILES("${_CHECK___restrict___KEYWORD_SRC}"
HAVE_KEYWORD___restrict__)
IF(HAVE_KEYWORD___restrict__)
SET(${_RESULT} __restrict__)
ELSE(HAVE_KEYWORD___restrict__)
CHECK_CXX_SOURCE_COMPILES("${_CHECK__Restrict_KEYWORD_SRC}"
HAVE_KEYWORD__Restrict)
IF(HAVE_KEYWORD__Restrict)
SET(${_RESULT} _Restrict)
ELSE(HAVE_KEYWORD__Restrict)
SET(${_RESULT} ) # no variant of restrict keyword supported
ENDIF(HAVE_KEYWORD__Restrict)
ENDIF(HAVE_KEYWORD___restrict__)
ENDIF(HAVE_KEYWORD___restrict)
ENDIF(HAVE_KEYWORD_restrict)
ENDMACRO (CHECK_RESTRICT_KEYWORD)

20
tvmet-1.7.1/include/tvmet/CMakeLists.txt
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@ -6,18 +6,20 @@ INCLUDE (CheckIeeeMath)
INCLUDE (CheckSysvMath)
INCLUDE (CheckLongDouble)
INCLUDE (CheckLongLong)
INCLUDE (CheckRestrictKeyword)
FILE(GLOB tvmet_header_SRCS "*.h")
CHECK_INCLUDE_FILES (sys/time.h TVMET_HAVE_SYS_TIME_H)
CHECK_INCLUDE_FILES (unistd.h TVMET_HAVE_UNISTD_H)
CHECK_COMPLEX (TVMET_HAVE_COMPLEX)
CHECK_COMPLEX_MATH1 (TVMET_HAVE_COMPLEX_MATH1)
CHECK_COMPLEX_MATH2 (TVMET_HAVE_COMPLEX_MATH2)
CHECK_IEEE_MATH (TVMET_HAVE_IEEE_MATH)
CHECK_SYSV_MATH (TVMET_HAVE_SYSV_MATH)
CHECK_LONG_DOUBLE (TVMET_HAVE_LONG_DOUBLE)
CHECK_LONG_DOUBLE (TVMET_HAVE_LONG_LONG)
CHECK_INCLUDE_FILES (sys/time.h TVMET_HAVE_SYS_TIME_H)
CHECK_INCLUDE_FILES (unistd.h TVMET_HAVE_UNISTD_H)
CHECK_COMPLEX (TVMET_HAVE_COMPLEX)
CHECK_COMPLEX_MATH1 (TVMET_HAVE_COMPLEX_MATH1)
CHECK_COMPLEX_MATH2 (TVMET_HAVE_COMPLEX_MATH2)
CHECK_IEEE_MATH (TVMET_HAVE_IEEE_MATH)
CHECK_SYSV_MATH (TVMET_HAVE_SYSV_MATH)
CHECK_LONG_DOUBLE (TVMET_HAVE_LONG_DOUBLE)
CHECK_LONG_DOUBLE (TVMET_HAVE_LONG_LONG)
CHECK_RESTRICT_KEYWORD (TVMET_RESTRICT_KEYWORD)
# the following are directories where stuff will be installed to
SET(INCLUDE_INSTALL_DIR

2
tvmet-1.7.1/include/tvmet/config.h.cmake
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@ -28,7 +28,7 @@
/* Define to 1 if you have the <unistd.h> header file. */
#cmakedefine TVMET_HAVE_UNISTD_H 1
#define _tvmet_restrict __restrict__
#define _tvmet_restrict @TVMET_RESTRICT_KEYWORD@
/* _INCLUDE_TVMET_CONFIG_H */
#endif