Postpone LLVM-related uses of AC_CHECK_DECLS.
Calling AC_CHECK_DECLS before we've finished setting up the compiler's CFLAGS seems like a pretty risky proposition, especially now that the first use of that macro will result in a test to see whether the compiler gives warning or error for undeclared built-in functions. That answer could very easily get changed later than where PGAC_LLVM_SUPPORT is called; furthermore, it's hardly unlikely that flags such as -D_GNU_SOURCE could change visibility of declarations. Hence, be a little less cavalier about where to do LLVM-related tests. This results in v11 and HEAD doing the warning-or-error check at the same place in the script as older branches are doing it, which seems like a good thing. Per further thought about commits0b59b0e8band16fbac39f.
This commit is contained in:
Tom Lane
parent
6e5f8d489a
commit
640a4ba052
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@ -1,11 +1,11 @@
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# config/llvm.m4
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# PGAC_LLVM_SUPPORT
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# ---------------
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# -----------------
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#
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# Look for the LLVM installation, check that it's new enough, set the
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# corresponding LLVM_{CFLAGS,CXXFLAGS,BINPATH} and LDFLAGS
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# variables. Also verifies that CLANG is available, to transform C
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# variables. Also verify that CLANG is available, to transform C
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# into bitcode.
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#
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AC_DEFUN([PGAC_LLVM_SUPPORT],
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@ -91,14 +91,6 @@ AC_DEFUN([PGAC_LLVM_SUPPORT],
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LLVM_BINPATH=`$LLVM_CONFIG --bindir`
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# Check which functionality is present
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SAVE_CPPFLAGS="$CPPFLAGS"
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CPPFLAGS="$CPPFLAGS $LLVM_CPPFLAGS"
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AC_CHECK_DECLS([LLVMOrcGetSymbolAddressIn], [], [], [[#include <llvm-c/OrcBindings.h>]])
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AC_CHECK_DECLS([LLVMGetHostCPUName, LLVMGetHostCPUFeatures], [], [], [[#include <llvm-c/TargetMachine.h>]])
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AC_CHECK_DECLS([LLVMCreateGDBRegistrationListener, LLVMCreatePerfJITEventListener], [], [], [[#include <llvm-c/ExecutionEngine.h>]])
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CPPFLAGS="$SAVE_CPPFLAGS"
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# LLVM_CONFIG, CLANG are already output via AC_ARG_VAR
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AC_SUBST(LLVM_LIBS)
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AC_SUBST(LLVM_CPPFLAGS)
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@ -107,3 +99,22 @@ AC_DEFUN([PGAC_LLVM_SUPPORT],
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AC_SUBST(LLVM_BINPATH)
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])# PGAC_LLVM_SUPPORT
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# PGAC_CHECK_LLVM_FUNCTIONS
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# -------------------------
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#
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# Check presence of some optional LLVM functions.
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# (This shouldn't happen until we're ready to run AC_CHECK_DECLS tests;
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# because PGAC_LLVM_SUPPORT runs very early, it's not an appropriate place.)
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#
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AC_DEFUN([PGAC_CHECK_LLVM_FUNCTIONS],
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[
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# Check which functionality is present
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SAVE_CPPFLAGS="$CPPFLAGS"
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CPPFLAGS="$CPPFLAGS $LLVM_CPPFLAGS"
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AC_CHECK_DECLS([LLVMOrcGetSymbolAddressIn], [], [], [[#include <llvm-c/OrcBindings.h>]])
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AC_CHECK_DECLS([LLVMGetHostCPUName, LLVMGetHostCPUFeatures], [], [], [[#include <llvm-c/TargetMachine.h>]])
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AC_CHECK_DECLS([LLVMCreateGDBRegistrationListener, LLVMCreatePerfJITEventListener], [], [], [[#include <llvm-c/ExecutionEngine.h>]])
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CPPFLAGS="$SAVE_CPPFLAGS"
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])# PGAC_CHECK_LLVM_FUNCTIONS
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@ -1749,56 +1749,6 @@ fi
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} # ac_fn_cxx_try_compile
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# ac_fn_c_check_decl LINENO SYMBOL VAR INCLUDES
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# ---------------------------------------------
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# Tests whether SYMBOL is declared in INCLUDES, setting cache variable VAR
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# accordingly.
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ac_fn_c_check_decl ()
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{
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as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
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# Initialize each $ac_[]_AC_LANG_ABBREV[]_decl_warn_flag once.
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as_decl_name=`echo $2|sed 's/ *(.*//'`
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as_decl_use=`echo $2|sed -e 's/(/((/' -e 's/)/) 0&/' -e 's/,/) 0& (/g'`
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{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $as_decl_name is declared" >&5
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$as_echo_n "checking whether $as_decl_name is declared... " >&6; }
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if eval \${$3+:} false; then :
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$as_echo_n "(cached) " >&6
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else
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ac_save_werror_flag=$ac_c_werror_flag
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ac_c_werror_flag="$ac_c_decl_warn_flag$ac_c_werror_flag"
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cat confdefs.h - <<_ACEOF >conftest.$ac_ext
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/* end confdefs.h. */
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$4
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int
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main ()
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{
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#ifndef $as_decl_name
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#ifdef __cplusplus
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(void) $as_decl_use;
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#else
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(void) $as_decl_name;
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#endif
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#endif
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;
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return 0;
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}
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_ACEOF
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if ac_fn_c_try_compile "$LINENO"; then :
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eval "$3=yes"
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else
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eval "$3=no"
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fi
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rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
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ac_c_werror_flag=$ac_save_werror_flag
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fi
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eval ac_res=\$$3
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
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$as_echo "$ac_res" >&6; }
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eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
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} # ac_fn_c_check_decl
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# ac_fn_c_try_link LINENO
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# -----------------------
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# Try to link conftest.$ac_ext, and return whether this succeeded.
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@ -2406,6 +2356,56 @@ rm -f conftest.val
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as_fn_set_status $ac_retval
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} # ac_fn_c_compute_int
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# ac_fn_c_check_decl LINENO SYMBOL VAR INCLUDES
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# ---------------------------------------------
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# Tests whether SYMBOL is declared in INCLUDES, setting cache variable VAR
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# accordingly.
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ac_fn_c_check_decl ()
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{
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as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
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# Initialize each $ac_[]_AC_LANG_ABBREV[]_decl_warn_flag once.
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as_decl_name=`echo $2|sed 's/ *(.*//'`
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as_decl_use=`echo $2|sed -e 's/(/((/' -e 's/)/) 0&/' -e 's/,/) 0& (/g'`
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{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $as_decl_name is declared" >&5
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$as_echo_n "checking whether $as_decl_name is declared... " >&6; }
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if eval \${$3+:} false; then :
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$as_echo_n "(cached) " >&6
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else
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ac_save_werror_flag=$ac_c_werror_flag
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ac_c_werror_flag="$ac_c_decl_warn_flag$ac_c_werror_flag"
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cat confdefs.h - <<_ACEOF >conftest.$ac_ext
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/* end confdefs.h. */
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$4
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int
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main ()
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{
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#ifndef $as_decl_name
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#ifdef __cplusplus
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(void) $as_decl_use;
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#else
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(void) $as_decl_name;
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#endif
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#endif
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;
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return 0;
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}
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_ACEOF
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if ac_fn_c_try_compile "$LINENO"; then :
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eval "$3=yes"
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else
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eval "$3=no"
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fi
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rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
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ac_c_werror_flag=$ac_save_werror_flag
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fi
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eval ac_res=\$$3
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
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$as_echo "$ac_res" >&6; }
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eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
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} # ac_fn_c_check_decl
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cat >config.log <<_ACEOF
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This file contains any messages produced by compilers while
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running configure, to aid debugging if configure makes a mistake.
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@ -4994,94 +4994,6 @@ fi
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test -n "$AWK" && break
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done
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# The Clang compiler raises a warning for an undeclared identifier that matches
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# a compiler builtin function. All extant Clang versions are affected, as of
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# Clang 3.6.0. Test a builtin known to every version. This problem affects the
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# C and Objective C languages, but Clang does report an error under C++ and
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# Objective C++.
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#
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# Passing -fno-builtin to the compiler would suppress this problem. That
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# strategy would have the advantage of being insensitive to stray warnings, but
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# it would make tests less realistic.
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{ $as_echo "$as_me:${as_lineno-$LINENO}: checking how $CC reports undeclared, standard C functions" >&5
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$as_echo_n "checking how $CC reports undeclared, standard C functions... " >&6; }
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if ${ac_cv_c_decl_report+:} false; then :
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$as_echo_n "(cached) " >&6
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else
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cat confdefs.h - <<_ACEOF >conftest.$ac_ext
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/* end confdefs.h. */
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int
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main ()
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{
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(void) strchr;
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;
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return 0;
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}
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_ACEOF
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if ac_fn_c_try_compile "$LINENO"; then :
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if test -s conftest.err; then :
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# For AC_CHECK_DECL to react to warnings, the compiler must be silent on
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# valid AC_CHECK_DECL input. No library function is consistently available
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# on freestanding implementations, so test against a dummy declaration.
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# Include always-available headers on the off chance that they somehow
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# elicit warnings.
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cat confdefs.h - <<_ACEOF >conftest.$ac_ext
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/* end confdefs.h. */
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#include <float.h>
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#include <limits.h>
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#include <stdarg.h>
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#include <stddef.h>
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extern void ac_decl (int, char *);
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int
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main ()
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{
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#ifdef __cplusplus
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(void) ac_decl ((int) 0, (char *) 0);
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(void) ac_decl;
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#else
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(void) ac_decl;
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#endif
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;
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return 0;
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}
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_ACEOF
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if ac_fn_c_try_compile "$LINENO"; then :
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if test -s conftest.err; then :
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{ { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
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$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
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as_fn_error $? "cannot detect from compiler exit status or warnings
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See \`config.log' for more details" "$LINENO" 5; }
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else
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ac_cv_c_decl_report=warning
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fi
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else
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{ { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
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$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
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as_fn_error $? "cannot compile a simple declaration test
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See \`config.log' for more details" "$LINENO" 5; }
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fi
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rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
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else
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{ { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
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$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
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as_fn_error $? "compiler does not report undeclared identifiers
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See \`config.log' for more details" "$LINENO" 5; }
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fi
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else
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ac_cv_c_decl_report=error
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fi
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rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
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fi
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_decl_report" >&5
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$as_echo "$ac_cv_c_decl_report" >&6; }
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case $ac_cv_c_decl_report in
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warning) ac_c_decl_warn_flag=yes ;;
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*) ac_c_decl_warn_flag= ;;
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esac
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if test "$with_llvm" = yes; then :
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@ -5272,69 +5184,6 @@ fi
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LLVM_BINPATH=`$LLVM_CONFIG --bindir`
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# Check which functionality is present
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SAVE_CPPFLAGS="$CPPFLAGS"
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CPPFLAGS="$CPPFLAGS $LLVM_CPPFLAGS"
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ac_fn_c_check_decl "$LINENO" "LLVMOrcGetSymbolAddressIn" "ac_cv_have_decl_LLVMOrcGetSymbolAddressIn" "#include <llvm-c/OrcBindings.h>
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"
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if test "x$ac_cv_have_decl_LLVMOrcGetSymbolAddressIn" = xyes; then :
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ac_have_decl=1
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else
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ac_have_decl=0
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fi
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cat >>confdefs.h <<_ACEOF
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#define HAVE_DECL_LLVMORCGETSYMBOLADDRESSIN $ac_have_decl
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_ACEOF
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ac_fn_c_check_decl "$LINENO" "LLVMGetHostCPUName" "ac_cv_have_decl_LLVMGetHostCPUName" "#include <llvm-c/TargetMachine.h>
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"
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if test "x$ac_cv_have_decl_LLVMGetHostCPUName" = xyes; then :
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ac_have_decl=1
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else
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ac_have_decl=0
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fi
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cat >>confdefs.h <<_ACEOF
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#define HAVE_DECL_LLVMGETHOSTCPUNAME $ac_have_decl
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_ACEOF
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ac_fn_c_check_decl "$LINENO" "LLVMGetHostCPUFeatures" "ac_cv_have_decl_LLVMGetHostCPUFeatures" "#include <llvm-c/TargetMachine.h>
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"
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if test "x$ac_cv_have_decl_LLVMGetHostCPUFeatures" = xyes; then :
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ac_have_decl=1
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else
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ac_have_decl=0
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fi
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cat >>confdefs.h <<_ACEOF
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#define HAVE_DECL_LLVMGETHOSTCPUFEATURES $ac_have_decl
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_ACEOF
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ac_fn_c_check_decl "$LINENO" "LLVMCreateGDBRegistrationListener" "ac_cv_have_decl_LLVMCreateGDBRegistrationListener" "#include <llvm-c/ExecutionEngine.h>
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"
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if test "x$ac_cv_have_decl_LLVMCreateGDBRegistrationListener" = xyes; then :
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ac_have_decl=1
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else
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ac_have_decl=0
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fi
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cat >>confdefs.h <<_ACEOF
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#define HAVE_DECL_LLVMCREATEGDBREGISTRATIONLISTENER $ac_have_decl
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_ACEOF
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ac_fn_c_check_decl "$LINENO" "LLVMCreatePerfJITEventListener" "ac_cv_have_decl_LLVMCreatePerfJITEventListener" "#include <llvm-c/ExecutionEngine.h>
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"
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if test "x$ac_cv_have_decl_LLVMCreatePerfJITEventListener" = xyes; then :
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ac_have_decl=1
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else
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ac_have_decl=0
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fi
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cat >>confdefs.h <<_ACEOF
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#define HAVE_DECL_LLVMCREATEPERFJITEVENTLISTENER $ac_have_decl
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_ACEOF
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CPPFLAGS="$SAVE_CPPFLAGS"
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# LLVM_CONFIG, CLANG are already output via AC_ARG_VAR
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@ -15291,6 +15140,94 @@ esac
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# posix_fadvise() is a no-op on Solaris, so don't incur function overhead
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# by calling it, 2009-04-02
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# http://src.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/lib/libc/port/gen/posix_fadvise.c
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# The Clang compiler raises a warning for an undeclared identifier that matches
|
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# a compiler builtin function. All extant Clang versions are affected, as of
|
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# Clang 3.6.0. Test a builtin known to every version. This problem affects the
|
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# C and Objective C languages, but Clang does report an error under C++ and
|
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# Objective C++.
|
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#
|
||||
# Passing -fno-builtin to the compiler would suppress this problem. That
|
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# strategy would have the advantage of being insensitive to stray warnings, but
|
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# it would make tests less realistic.
|
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{ $as_echo "$as_me:${as_lineno-$LINENO}: checking how $CC reports undeclared, standard C functions" >&5
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$as_echo_n "checking how $CC reports undeclared, standard C functions... " >&6; }
|
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if ${ac_cv_c_decl_report+:} false; then :
|
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$as_echo_n "(cached) " >&6
|
||||
else
|
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cat confdefs.h - <<_ACEOF >conftest.$ac_ext
|
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/* end confdefs.h. */
|
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|
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int
|
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main ()
|
||||
{
|
||||
(void) strchr;
|
||||
;
|
||||
return 0;
|
||||
}
|
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_ACEOF
|
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if ac_fn_c_try_compile "$LINENO"; then :
|
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if test -s conftest.err; then :
|
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# For AC_CHECK_DECL to react to warnings, the compiler must be silent on
|
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# valid AC_CHECK_DECL input. No library function is consistently available
|
||||
# on freestanding implementations, so test against a dummy declaration.
|
||||
# Include always-available headers on the off chance that they somehow
|
||||
# elicit warnings.
|
||||
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
|
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/* end confdefs.h. */
|
||||
#include <float.h>
|
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#include <limits.h>
|
||||
#include <stdarg.h>
|
||||
#include <stddef.h>
|
||||
extern void ac_decl (int, char *);
|
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int
|
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main ()
|
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{
|
||||
#ifdef __cplusplus
|
||||
(void) ac_decl ((int) 0, (char *) 0);
|
||||
(void) ac_decl;
|
||||
#else
|
||||
(void) ac_decl;
|
||||
#endif
|
||||
|
||||
;
|
||||
return 0;
|
||||
}
|
||||
_ACEOF
|
||||
if ac_fn_c_try_compile "$LINENO"; then :
|
||||
if test -s conftest.err; then :
|
||||
{ { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
|
||||
$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
|
||||
as_fn_error $? "cannot detect from compiler exit status or warnings
|
||||
See \`config.log' for more details" "$LINENO" 5; }
|
||||
else
|
||||
ac_cv_c_decl_report=warning
|
||||
fi
|
||||
else
|
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{ { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
|
||||
$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
|
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as_fn_error $? "cannot compile a simple declaration test
|
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See \`config.log' for more details" "$LINENO" 5; }
|
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fi
|
||||
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
|
||||
else
|
||||
{ { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
|
||||
$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
|
||||
as_fn_error $? "compiler does not report undeclared identifiers
|
||||
See \`config.log' for more details" "$LINENO" 5; }
|
||||
fi
|
||||
else
|
||||
ac_cv_c_decl_report=error
|
||||
fi
|
||||
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
|
||||
fi
|
||||
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_decl_report" >&5
|
||||
$as_echo "$ac_cv_c_decl_report" >&6; }
|
||||
|
||||
case $ac_cv_c_decl_report in
|
||||
warning) ac_c_decl_warn_flag=yes ;;
|
||||
*) ac_c_decl_warn_flag= ;;
|
||||
esac
|
||||
|
||||
if test "$PORTNAME" != "solaris"; then :
|
||||
|
||||
for ac_func in posix_fadvise
|
||||
|
|
@ -16087,6 +16024,73 @@ fi
|
|||
CPPFLAGS=$ac_save_CPPFLAGS
|
||||
fi
|
||||
|
||||
if test "$with_llvm" = yes; then
|
||||
|
||||
# Check which functionality is present
|
||||
SAVE_CPPFLAGS="$CPPFLAGS"
|
||||
CPPFLAGS="$CPPFLAGS $LLVM_CPPFLAGS"
|
||||
ac_fn_c_check_decl "$LINENO" "LLVMOrcGetSymbolAddressIn" "ac_cv_have_decl_LLVMOrcGetSymbolAddressIn" "#include <llvm-c/OrcBindings.h>
|
||||
"
|
||||
if test "x$ac_cv_have_decl_LLVMOrcGetSymbolAddressIn" = xyes; then :
|
||||
ac_have_decl=1
|
||||
else
|
||||
ac_have_decl=0
|
||||
fi
|
||||
|
||||
cat >>confdefs.h <<_ACEOF
|
||||
#define HAVE_DECL_LLVMORCGETSYMBOLADDRESSIN $ac_have_decl
|
||||
_ACEOF
|
||||
|
||||
ac_fn_c_check_decl "$LINENO" "LLVMGetHostCPUName" "ac_cv_have_decl_LLVMGetHostCPUName" "#include <llvm-c/TargetMachine.h>
|
||||
"
|
||||
if test "x$ac_cv_have_decl_LLVMGetHostCPUName" = xyes; then :
|
||||
ac_have_decl=1
|
||||
else
|
||||
ac_have_decl=0
|
||||
fi
|
||||
|
||||
cat >>confdefs.h <<_ACEOF
|
||||
#define HAVE_DECL_LLVMGETHOSTCPUNAME $ac_have_decl
|
||||
_ACEOF
|
||||
ac_fn_c_check_decl "$LINENO" "LLVMGetHostCPUFeatures" "ac_cv_have_decl_LLVMGetHostCPUFeatures" "#include <llvm-c/TargetMachine.h>
|
||||
"
|
||||
if test "x$ac_cv_have_decl_LLVMGetHostCPUFeatures" = xyes; then :
|
||||
ac_have_decl=1
|
||||
else
|
||||
ac_have_decl=0
|
||||
fi
|
||||
|
||||
cat >>confdefs.h <<_ACEOF
|
||||
#define HAVE_DECL_LLVMGETHOSTCPUFEATURES $ac_have_decl
|
||||
_ACEOF
|
||||
|
||||
ac_fn_c_check_decl "$LINENO" "LLVMCreateGDBRegistrationListener" "ac_cv_have_decl_LLVMCreateGDBRegistrationListener" "#include <llvm-c/ExecutionEngine.h>
|
||||
"
|
||||
if test "x$ac_cv_have_decl_LLVMCreateGDBRegistrationListener" = xyes; then :
|
||||
ac_have_decl=1
|
||||
else
|
||||
ac_have_decl=0
|
||||
fi
|
||||
|
||||
cat >>confdefs.h <<_ACEOF
|
||||
#define HAVE_DECL_LLVMCREATEGDBREGISTRATIONLISTENER $ac_have_decl
|
||||
_ACEOF
|
||||
ac_fn_c_check_decl "$LINENO" "LLVMCreatePerfJITEventListener" "ac_cv_have_decl_LLVMCreatePerfJITEventListener" "#include <llvm-c/ExecutionEngine.h>
|
||||
"
|
||||
if test "x$ac_cv_have_decl_LLVMCreatePerfJITEventListener" = xyes; then :
|
||||
ac_have_decl=1
|
||||
else
|
||||
ac_have_decl=0
|
||||
fi
|
||||
|
||||
cat >>confdefs.h <<_ACEOF
|
||||
#define HAVE_DECL_LLVMCREATEPERFJITEVENTLISTENER $ac_have_decl
|
||||
_ACEOF
|
||||
|
||||
CPPFLAGS="$SAVE_CPPFLAGS"
|
||||
|
||||
fi
|
||||
|
||||
# Lastly, restore full LIBS list and check for readline/libedit symbols
|
||||
LIBS="$LIBS_including_readline"
|
||||
|
||||
|
|
|
|||
|
|
@ -1832,6 +1832,10 @@ if test "$with_icu" = yes; then
|
|||
CPPFLAGS=$ac_save_CPPFLAGS
|
||||
fi
|
||||
|
||||
if test "$with_llvm" = yes; then
|
||||
PGAC_CHECK_LLVM_FUNCTIONS()
|
||||
fi
|
||||
|
||||
# Lastly, restore full LIBS list and check for readline/libedit symbols
|
||||
LIBS="$LIBS_including_readline"
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue