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Viktor Szakats 2026-05-26 18:38:24 +02:00
parent 2843e66bd7
commit b92d14018c
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102
m4/curl-compilers.m4
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@ -174,7 +174,7 @@ dnl -------------------------------------------------
dnl Verify if compiler being used is GNU C
dnl
dnl $compiler_num is set to MAJOR * 100 + MINOR for gcc less than version
dnl 7 and $MAJOR * 100 for gcc version 7 or higher.
dnl 7 and $MAJOR * 100 for gcc version 7 or greater.
dnl
dnl Examples:
dnl Version 1.2.3 => 102
@ -548,7 +548,7 @@ AC_DEFUN([CURL_SET_COMPILER_BASIC_OPTS], [
GNU_C)
dnl turn implicit-function-declaration warning into error,
dnl at least gcc 2.95 or higher support this
dnl at least gcc 2.95 or greater support this
if test "$compiler_num" -ge "295"; then
tmp_CFLAGS="$tmp_CFLAGS -Werror-implicit-function-declaration"
fi
@ -816,12 +816,12 @@ AC_DEFUN([CURL_SET_COMPILER_WARNING_OPTS], [
tmp_CFLAGS="$tmp_CFLAGS -Wno-system-headers"
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [shorten-64-to-32])
dnl Only clang 1.1 or higher
dnl Only clang 1.1 or greater
if test "$compiler_num" -ge "101"; then
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [unused])
fi
dnl Only clang 2.7 or higher
dnl Only clang 2.7 or greater
if test "$compiler_num" -ge "207"; then
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [address])
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [attributes])
@ -843,13 +843,13 @@ AC_DEFUN([CURL_SET_COMPILER_WARNING_OPTS], [
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [unreachable-code unused-parameter])
fi
dnl Only clang 2.8 or higher
dnl Only clang 2.8 or greater
if test "$compiler_num" -ge "208"; then
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [ignored-qualifiers])
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [vla])
fi
dnl Only clang 2.9 or higher
dnl Only clang 2.9 or greater
if test "$compiler_num" -ge "209"; then
tmp_CFLAGS="$tmp_CFLAGS -Wno-sign-conversion"
tmp_CFLAGS="$tmp_CFLAGS -Wno-padded" # Not used because we cannot change public structs
@ -857,20 +857,20 @@ AC_DEFUN([CURL_SET_COMPILER_WARNING_OPTS], [
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [shift-sign-overflow])
fi
dnl Only clang 3.0 or higher
dnl Only clang 3.0 or greater
if test "$compiler_num" -ge "300"; then
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [conditional-uninitialized])
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [language-extension-token])
fi
dnl Only clang 3.1 or higher
dnl Only clang 3.1 or greater
if test "$compiler_num" -ge "301"; then
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [format-non-iso])
tmp_CFLAGS="$tmp_CFLAGS -Wno-covered-switch-default" # Annoying to fix or silence
tmp_CFLAGS="$tmp_CFLAGS -Wno-disabled-macro-expansion" # for std headers, and curl/curl.h (rare combos)
fi
dnl Only clang 3.2 or higher
dnl Only clang 3.2 or greater
if test "$compiler_num" -ge "302"; then
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [enum-conversion])
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [sometimes-uninitialized])
@ -885,29 +885,29 @@ AC_DEFUN([CURL_SET_COMPILER_WARNING_OPTS], [
esac
fi
dnl Only clang 3.3 or higher
dnl Only clang 3.3 or greater
if test "$compiler_num" -ge "303"; then
tmp_CFLAGS="$tmp_CFLAGS -Wno-documentation-unknown-command"
fi
dnl Only clang 3.4 or higher
dnl Only clang 3.4 or greater
if test "$compiler_num" -ge "304"; then
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [header-guard])
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [unused-const-variable])
fi
dnl Only clang 3.5 or higher
dnl Only clang 3.5 or greater
if test "$compiler_num" -ge "305"; then
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [pragmas])
# CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [unreachable-code-break]) # Not used: Silent in "unity" builds
fi
dnl Only clang 3.6 or higher
dnl Only clang 3.6 or greater
if test "$compiler_num" -ge "306"; then
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [double-promotion])
fi
dnl Only clang 3.9 or higher
dnl Only clang 3.9 or greater
if test "$compiler_num" -ge "309"; then
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [comma])
dnl avoid the varargs warning, fixed in 4.0
@ -917,46 +917,46 @@ AC_DEFUN([CURL_SET_COMPILER_WARNING_OPTS], [
fi
fi
dnl clang 7 or higher
dnl clang 7 or greater
if test "$compiler_num" -ge "700"; then
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [assign-enum])
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [extra-semi-stmt])
fi
dnl clang 10 or higher
dnl clang 10 or greater
if test "$compiler_num" -ge "1000"; then
tmp_CFLAGS="$tmp_CFLAGS -Wimplicit-fallthrough" # we have silencing markup for clang 10.0 or higher only
tmp_CFLAGS="$tmp_CFLAGS -Wimplicit-fallthrough" # we have silencing markup for clang 10.0 or greater only
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [xor-used-as-pow])
fi
dnl clang 13 or higher
dnl clang 13 or greater
if test "$compiler_num" -ge "1300"; then
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [cast-function-type])
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [reserved-identifier]) # Keep it before -Wno-reserved-macro-identifier
tmp_CFLAGS="$tmp_CFLAGS -Wno-reserved-macro-identifier" # Sometimes such external macros need to be set
fi
dnl clang 16 or higher
dnl clang 16 or greater
if test "$compiler_num" -ge "1600"; then
tmp_CFLAGS="$tmp_CFLAGS -Wno-unsafe-buffer-usage"
fi
dnl clang 17 or higher
dnl clang 17 or greater
if test "$compiler_num" -ge "1700"; then
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [cast-function-type-strict]) # with Apple clang it requires 16.0 or higher
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [cast-function-type-strict]) # with Apple clang it requires 16.0 or greater
fi
dnl clang 19 or higher
dnl clang 19 or greater
if test "$compiler_num" -ge "1901"; then
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [format-signedness])
fi
dnl clang 20 or higher
dnl clang 20 or greater
if test "$compiler_num" -ge "2001"; then
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [array-compare])
fi
dnl clang 21 or higher
dnl clang 21 or greater
if test "$compiler_num" -ge "2101"; then
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [c++-hidden-decl])
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [implicit-int-enum-cast])
@ -1011,7 +1011,7 @@ AC_DEFUN([CURL_SET_COMPILER_WARNING_OPTS], [
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [all])
tmp_CFLAGS="$tmp_CFLAGS -W"
dnl Only gcc 1.4 or higher
dnl Only gcc 1.4 or greater
if test "$compiler_num" -ge "104"; then
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [pointer-arith write-strings])
dnl If not cross-compiling with a gcc older than 3.0
@ -1021,7 +1021,7 @@ AC_DEFUN([CURL_SET_COMPILER_WARNING_OPTS], [
fi
fi
dnl Only gcc 2.7 or higher
dnl Only gcc 2.7 or greater
if test "$compiler_num" -ge "207"; then
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [nested-externs])
dnl If not cross-compiling with a gcc older than 3.0
@ -1032,24 +1032,24 @@ AC_DEFUN([CURL_SET_COMPILER_WARNING_OPTS], [
fi
fi
dnl Only gcc 2.95 or higher
dnl Only gcc 2.95 or greater
if test "$compiler_num" -ge "295"; then
tmp_CFLAGS="$tmp_CFLAGS -Wno-long-long"
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [bad-function-cast])
fi
dnl Only gcc 2.96 or higher
dnl Only gcc 2.96 or greater
if test "$compiler_num" -ge "296"; then
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [float-equal])
tmp_CFLAGS="$tmp_CFLAGS -Wno-multichar"
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [sign-compare])
dnl -Wundef used only if gcc is 2.96 or higher since we get
dnl -Wundef used only if gcc is 2.96 or greater since we get
dnl lots of "`_POSIX_C_SOURCE' is not defined" in system
dnl headers with gcc 2.95.4 on FreeBSD 4.9
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [undef])
fi
dnl Only gcc 3.0 or higher
dnl Only gcc 3.0 or greater
if test "$compiler_num" -ge "300"; then
dnl -Wunreachable-code seems totally unreliable on my gcc 3.3.2 on
dnl on i686-Linux as it gives us heaps with false positives.
@ -1058,24 +1058,24 @@ AC_DEFUN([CURL_SET_COMPILER_WARNING_OPTS], [
tmp_CFLAGS="$tmp_CFLAGS"
fi
dnl Only gcc 3.3 or higher
dnl Only gcc 3.3 or greater
if test "$compiler_num" -ge "303"; then
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [endif-labels strict-prototypes])
fi
dnl Only gcc 3.4 or higher
dnl Only gcc 3.4 or greater
if test "$compiler_num" -ge "304"; then
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [declaration-after-statement])
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [old-style-definition])
fi
dnl Only gcc 4.0 or higher
dnl Only gcc 4.0 or greater
if test "$compiler_num" -ge "400"; then
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [cast-qual])
tmp_CFLAGS="$tmp_CFLAGS -Wstrict-aliasing=3"
fi
dnl Only gcc 4.1 or higher
dnl Only gcc 4.1 or greater
if test "$compiler_num" -ge "401"; then
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [attributes])
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [div-by-zero format-security])
@ -1097,12 +1097,12 @@ AC_DEFUN([CURL_SET_COMPILER_WARNING_OPTS], [
# tmp_CFLAGS="$tmp_CFLAGS -Wno-error=unused-macros"
fi
dnl Only gcc 4.2 or higher
dnl Only gcc 4.2 or greater
if test "$compiler_num" -ge "402"; then
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [cast-align])
fi
dnl Only gcc 4.3 or higher
dnl Only gcc 4.3 or greater
if test "$compiler_num" -ge "403"; then
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [address])
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [type-limits old-style-declaration])
@ -1115,12 +1115,12 @@ AC_DEFUN([CURL_SET_COMPILER_WARNING_OPTS], [
tmp_CFLAGS="$tmp_CFLAGS -ftree-vrp"
fi
dnl Only gcc 4.4 or higher
dnl Only gcc 4.4 or greater
if test "$compiler_num" -ge "404"; then
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [logical-op])
fi
dnl Only gcc 4.5 or higher
dnl Only gcc 4.5 or greater
if test "$compiler_num" -ge "405"; then
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [jump-misses-init])
dnl Only Windows targets
@ -1135,24 +1135,24 @@ AC_DEFUN([CURL_SET_COMPILER_WARNING_OPTS], [
esac
fi
dnl Only gcc 4.6 or higher
dnl Only gcc 4.6 or greater
if test "$compiler_num" -ge "406"; then
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [double-promotion])
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [trampolines])
fi
dnl only gcc 4.8 or higher
dnl only gcc 4.8 or greater
if test "$compiler_num" -ge "408"; then
tmp_CFLAGS="$tmp_CFLAGS -Wformat=2"
fi
dnl Only gcc 5 or higher
dnl Only gcc 5 or greater
if test "$compiler_num" -ge "500"; then
tmp_CFLAGS="$tmp_CFLAGS -Warray-bounds=2"
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [format-signedness])
fi
dnl Only gcc 6 or higher
dnl Only gcc 6 or greater
if test "$compiler_num" -ge "600"; then
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [shift-negative-value])
tmp_CFLAGS="$tmp_CFLAGS -Wshift-overflow=2"
@ -1162,7 +1162,7 @@ AC_DEFUN([CURL_SET_COMPILER_WARNING_OPTS], [
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [unused-const-variable])
fi
dnl Only gcc 7 or higher
dnl Only gcc 7 or greater
if test "$compiler_num" -ge "700"; then
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [duplicated-branches])
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [restrict])
@ -1171,24 +1171,24 @@ AC_DEFUN([CURL_SET_COMPILER_WARNING_OPTS], [
tmp_CFLAGS="$tmp_CFLAGS -Wimplicit-fallthrough"
fi
dnl Only gcc 10 or higher
dnl Only gcc 10 or greater
if test "$compiler_num" -ge "1000"; then
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [arith-conversion])
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [enum-conversion])
fi
dnl Only gcc 12 or higher
dnl Only gcc 12 or greater
if test "$compiler_num" -ge "1200"; then
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [array-compare])
fi
dnl Only gcc 13 or higher
dnl Only gcc 13 or greater
if test "$compiler_num" -ge "1300"; then
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [enum-int-mismatch])
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [xor-used-as-pow])
fi
dnl Only gcc 15 or higher
dnl Only gcc 15 or greater
if test "$compiler_num" -ge "1500"; then
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [leading-whitespace=spaces])
CURL_ADD_COMPILER_WARNINGS([tmp_CFLAGS], [trailing-whitespace=any])
@ -1204,11 +1204,11 @@ AC_DEFUN([CURL_SET_COMPILER_WARNING_OPTS], [
dnl some warnings triggered on third party system headers.
if test "$cross_compiling" = "yes"; then
if test "$compiler_num" -ge "104"; then
dnl gcc 1.4 or higher
dnl gcc 1.4 or greater
tmp_CFLAGS="$tmp_CFLAGS -Wno-unused -Wno-shadow"
fi
if test "$compiler_num" -ge "207"; then
dnl gcc 2.7 or higher
dnl gcc 2.7 or greater
tmp_CFLAGS="$tmp_CFLAGS -Wno-missing-declarations"
tmp_CFLAGS="$tmp_CFLAGS -Wno-missing-prototypes"
fi
@ -1508,7 +1508,7 @@ AC_DEFUN([CURL_CHECK_COMPILER_SYMBOL_HIDING], [
supports_symbol_hiding="yes"
;;
GNU_C)
dnl Only gcc 3.4 or higher
dnl Only gcc 3.4 or greater
if test "$compiler_num" -ge "304"; then
if $CC --help --verbose 2>/dev/null | grep fvisibility= >/dev/null; then
tmp_EXTERN="__attribute__((__visibility__(\"default\")))"
@ -1518,7 +1518,7 @@ AC_DEFUN([CURL_CHECK_COMPILER_SYMBOL_HIDING], [
fi
;;
INTEL_UNIX_C)
dnl Only icc 9.0 or higher
dnl Only icc 9.0 or greater
if test "$compiler_num" -ge "900"; then
if $CC --help --verbose 2>&1 | grep fvisibility= > /dev/null; then
tmp_save_CFLAGS="$CFLAGS"