porting/libperl.t: detect LTO builds via -Doptimize

mauke · mauke · commit dfbafc9e361c · 2025-02-27T14:22:01.000+01:00
Link-time optimization (LTO) may be enabled via -flto using either
-Dccflags='-flto' or -Doptimize='-O2 -flto', so check both variables to
detect an LTO build.
diff --git a/t/porting/libperl.t b/t/porting/libperl.t
@@ -56,7 +56,7 @@ if ($Config{cc} =~ /g\+\+/) {
 }
 
 # ccname is gcc for both gcc and clang
-if ($Config{ccname} eq "gcc" && $Config{ccflags} =~ /-flto\b/) {
+if ($Config{ccname} eq "gcc" && "$Config{ccflags} $Config{optimize}" =~ /-flto\b/) {
     # If we compile with gcc nm marks PL_no_mem as "D" (normal data) rather than a R (read only)
     # but the symbol still ends up in the .rodata section of the image on linking.
     # If we compile with clang 14, nm marks PL_no_mem as "T" (text, aka code) rather than R

Original file line number	Diff line number	Diff line change
`@@ -56,7 +56,7 @@ if ($Config{cc} =~ /g\+\+/) {`
`56`	`56`	`}`
`57`	`57`
`58`	`58`	`# ccname is gcc for both gcc and clang`
`59`		`-if ($Config{ccname} eq "gcc" && $Config{ccflags} =~ /-flto\b/) {`
	`59`	`+if ($Config{ccname} eq "gcc" && "$Config{ccflags} $Config{optimize}" =~ /-flto\b/) {`
`60`	`60`	`# If we compile with gcc nm marks PL_no_mem as "D" (normal data) rather than a R (read only)`
`61`	`61`	`# but the symbol still ends up in the .rodata section of the image on linking.`
`62`	`62`	`# If we compile with clang 14, nm marks PL_no_mem as "T" (text, aka code) rather than R`