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Check if clang and clang++ are used to test glibc
Set have-test-clang to yes if clang is used to test glibc. Set have-test-clangxx to yes if clang++ is used to test glibc. Signed-off-by: H.J. Lu <hjl.tools@gmail.com> Reviewed-by: Sam James <sam@gentoo.org>
This commit is contained in:
H.J. Lu
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cd90d3ca7d
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eb02fb7739
3 changed files with 149 additions and 0 deletions
49
aclocal.m4
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49
aclocal.m4
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@ -326,6 +326,16 @@ CC="$TEST_CC"
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CC="$saved_CC"
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])
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dnl Run a test with TEST_CXX.
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dnl LIBC_CHECK_TEST_CXX([commands])
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AC_DEFUN([LIBC_CHECK_TEST_CXX],
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[
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saved_CXX="$CXX"
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CXX="$TEST_CXX"
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[$1]
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CXX="$saved_CXX"
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])
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dnl Test a CC and TEST_CC compiler option or options with an empty input
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dnl file.
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dnl LIBC_TRY_CC_AND_TEST_CC_OPTION([message], [options],
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@ -398,3 +408,42 @@ else
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)
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fi
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])
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dnl Test a TEST_CC compiler option or options with an input file.
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dnl LIBC_TRY_TEST_CC_COMMAND([message], [code], [options],
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dnl [TEST_CC-cache-id], [TEST_CC-action-if-true], [TEST_CC-action-if-false])
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AC_DEFUN([LIBC_TRY_TEST_CC_COMMAND],
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[
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cat > conftest.c <<EOF
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$2
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EOF
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LIBC_CHECK_TEST_CC(
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AC_CACHE_CHECK([$1 in testing], $4, [dnl
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if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $3 conftest.c -o conftest 1>&AS_MESSAGE_LOG_FD])
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then
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[$5]
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else
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[$6]
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fi])
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)
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rm -f conftest*])
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dnl Test a TEST_CXX compiler option or options with an input file.
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dnl LIBC_TRY_TEST_CXX_COMMAND([message], [code], [options],
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dnl [TEST_CXX-cache-id], [TEST_CXX-action-if-true],
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dnl [TEST_CXX-action-if-false])
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AC_DEFUN([LIBC_TRY_TEST_CXX_COMMAND],
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[
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cat > conftest.cc <<EOF
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$2
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EOF
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LIBC_CHECK_TEST_CXX(
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AC_CACHE_CHECK([$1 in testing], $4, [dnl
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if AC_TRY_COMMAND([${CXX-c++} $CXXFLAGS $CPPFLAGS $3 conftest.cc -o conftest 1>&AS_MESSAGE_LOG_FD])
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then
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[$5]
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else
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[$6]
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fi])
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)
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rm -f conftest*])
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76
configure
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76
configure
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@ -5993,6 +5993,82 @@ fi
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printf "%s\n" "$libc_cv_with_fp" >&6; }
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conftest_code="
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#ifndef __clang__
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#error Not Clang!
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#endif
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"
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cat > conftest.c <<EOF
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$conftest_code
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EOF
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saved_CC="$CC"
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CC="$TEST_CC"
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{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for clang in testing" >&5
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printf %s "checking for clang in testing... " >&6; }
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if test ${libc_cv_test_clang+y}
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then :
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printf %s "(cached) " >&6
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else case e in #(
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e) if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS -c conftest.c -o conftest 1>&5'
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{ { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
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(eval $ac_try) 2>&5
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ac_status=$?
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printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
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test $ac_status = 0; }; }
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then
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libc_cv_test_clang=yes
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else
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libc_cv_test_clang=no
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fi ;;
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esac
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fi
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{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $libc_cv_test_clang" >&5
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printf "%s\n" "$libc_cv_test_clang" >&6; }
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CC="$saved_CC"
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rm -f conftest*
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config_vars="$config_vars
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have-test-clang = $libc_cv_test_clang"
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cat > conftest.cc <<EOF
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$conftest_code
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EOF
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saved_CXX="$CXX"
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CXX="$TEST_CXX"
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{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for clang++ in testing" >&5
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printf %s "checking for clang++ in testing... " >&6; }
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if test ${libc_cv_test_clangxx+y}
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then :
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printf %s "(cached) " >&6
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else case e in #(
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e) if { ac_try='${CXX-c++} $CXXFLAGS $CPPFLAGS -c conftest.cc -o conftest 1>&5'
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{ { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
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(eval $ac_try) 2>&5
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ac_status=$?
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printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
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test $ac_status = 0; }; }
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then
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libc_cv_test_clangxx=yes
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else
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libc_cv_test_clangxx=no
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fi ;;
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esac
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fi
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{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $libc_cv_test_clangxx" >&5
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printf "%s\n" "$libc_cv_test_clangxx" >&6; }
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CXX="$saved_CXX"
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rm -f conftest*
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config_vars="$config_vars
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have-test-clangxx = $libc_cv_test_clangxx"
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{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for -fstack-protector" >&5
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printf %s "checking for -fstack-protector... " >&6; }
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if test ${libc_cv_ssp+y}
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24
configure.ac
24
configure.ac
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@ -641,6 +641,30 @@ fi
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rm -f conftest*])
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AC_SUBST(libc_cv_with_fp)
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conftest_code="
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#ifndef __clang__
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#error Not Clang!
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#endif
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"
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dnl Check if clang is used to test glibc.
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LIBC_TRY_TEST_CC_COMMAND([for clang],
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[$conftest_code],
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[-c],
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libc_cv_test_clang,
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[libc_cv_test_clang=yes], [libc_cv_test_clang=no],
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)
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LIBC_CONFIG_VAR([have-test-clang], [$libc_cv_test_clang])
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dnl Check if clang++ is used to test glibc.
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LIBC_TRY_TEST_CXX_COMMAND([for clang++],
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[$conftest_code],
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[-c],
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libc_cv_test_clangxx,
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[libc_cv_test_clangxx=yes], [libc_cv_test_clangxx=no],
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)
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LIBC_CONFIG_VAR([have-test-clangxx], [$libc_cv_test_clangxx])
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AC_CACHE_CHECK(for -fstack-protector, libc_cv_ssp, [dnl
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LIBC_TRY_CC_OPTION([$CFLAGS $CPPFLAGS -Werror -fstack-protector],
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[libc_cv_ssp=yes],
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