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[flang][driver] Make -stdlib= option visible to flang and silently ignored by it #110598

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[flang][driver] Make -stdlib= option visible to flang and silently ignored by it #110598

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2 changes: 1 addition & 1 deletion clang/include/clang/Driver/Options.td
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Original file line number Diff line number Diff line change
Expand Up @@ -5812,7 +5812,7 @@ def std_EQ : Joined<["-", "--"], "std=">,
;
}]>;
def stdlib_EQ : Joined<["-", "--"], "stdlib=">,
Visibility<[ClangOption, CC1Option]>,
Visibility<[ClangOption, CC1Option, FlangOption]>,
HelpText<"C++ standard library to use">, Values<"libc++,libstdc++,platform">;
def stdlibxx_isystem : JoinedOrSeparate<["-"], "stdlib++-isystem">,
Group<clang_i_Group>,
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48 changes: 48 additions & 0 deletions flang/test/Integration/mixed-lang-stdlib.cpp
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Original file line number Diff line number Diff line change
@@ -0,0 +1,48 @@
// REQUIRES: system-linux
// RUN: split-file %s %t
// RUN: chmod +x %t/mixed-runtest.sh
// RUN: %t/mixed-runtest.sh -stdlib=platform %t %t/mixed-cppfile.cpp
// %t/mixed-fortranfile.f90 %flang | FileCheck %s

//--- mixed-cppfile.cpp
#include <iostream>

extern "C" void hello(void) { std::cout << "Hello" << std::endl; }

// clang-format off
// CHECK: PASS
//--- mixed-fortranfile.f90
program mixed
implicit none
interface
subroutine hello() bind(c)
implicit none
end subroutine
end interface

call hello()
end program

//--- mixed-runtest.sh
#!/bin/bash
LDFLAGS=$1
TMPDIR=$2
CPPFILE=$3
F90FILE=$4
FLANG=$5
BINDIR=`dirname $FLANG`
CPPCOMP=$BINDIR/clang++
if [ -x $CPPCOMP ]
then
$CPPCOMP -shared $LDFLAGS $CPPFILE -o $TMPDIR/libmixed.so
$FLANG $LDFLAGS -o $TMPDIR/mixed $F90FILE -L$TMPDIR -lmixed -Wl,-rpath=$TMPDIR
if [ -x $TMPDIR/mixed ]
then
echo "PASS"
else
echo "FAIL"
fi
else
# No clang compiler, just pass by default
echo "PASS"
fi
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