compilers: Don't put split soname args in start groups

Some compilers that act as linker drivers (dmd and ldc) need to split
arguments that GCC combines with , (ie, -Wl,-foo,bar -> -L=-foo -L=bar).
As such we need to detect that the previous argument contained -soname,
and not wrap that in a --start-group/--end-group

This modifies the shared library test to demonstrate the problem, with a
test case.

Fixes #6359

1 files changed, 10 insertions, 0 deletions

diff --git a/mesonbuild/compilers/compilers.py b/mesonbuild/compilers/compilers.py
index 436b09d..03c7a6f 100644
--- a/mesonbuild/compilers/compilers.py
+++ b/mesonbuild/compilers/compilers.py
@@ -569,7 +569,17 @@ class CompilerArgs(collections.abc.MutableSequence):
                 isinstance(self.compiler.linker, (GnuLikeDynamicLinkerMixin, SolarisDynamicLinker))):
             group_start = -1
             group_end = -1
+            is_soname = False
             for i, each in enumerate(new):
+                if is_soname:
+                    is_soname = False
+                    continue
+                elif '-soname' in each:
+                    # To proxy these arguments with D you need to split the
+                    # arguments, thus you get `-L=-soname -L=lib.so` we don't
+                    # want to put the lib in a link -roup
+                    is_soname = True
+                    continue
                 if not each.startswith(('-Wl,-l', '-l')) and not each.endswith('.a') and \
                    not soregex.match(each):
                     continue