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* [glibc/maskray/grte] Use crt*.o files from llvm compiler-rt when building with clang
@ 2021-08-28 0:29 Fangrui Song
0 siblings, 0 replies; 3+ messages in thread
From: Fangrui Song @ 2021-08-28 0:29 UTC (permalink / raw)
To: glibc-cvs
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=b7a7a3008ea3096ba7d4e88a893a2ca66a31ba4f
commit b7a7a3008ea3096ba7d4e88a893a2ca66a31ba4f
Author: Stan Shebs <stanshebs@google.com>
Date: Tue Jun 9 10:09:34 2020 -0700
Use crt*.o files from llvm compiler-rt when building with clang
Diff:
---
Makeconfig | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/Makeconfig b/Makeconfig
index ff744a8f0d..f5cd92014f 100644
--- a/Makeconfig
+++ b/Makeconfig
@@ -661,20 +661,40 @@ libc.so-gnulib := -lgcc
endif
+preinit = $(addprefix $(csu-objpfx),crti.o)
+postinit = $(addprefix $(csu-objpfx),crtn.o)
+ifeq ($(with-clang),yes)
+# With clang, use the crt*.o files from llvm's compiler-rt package.
+# The files normally have an architecture name appended, in case of
+# variants (32/64, le/be etc) installed in the same directory.
++prector = `$(CC) $(sysdep-LDFLAGS) --print-file-name=clang_rt.crtbegin-$(config-machine).o`
++postctor = `$(CC) $(sysdep-LDFLAGS) --print-file-name=clang_rt.crtend-$(config-machine).o`
+else
+prector = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtbegin.o`
+postctor = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtend.o`
+endif
# Variants of the two previous definitions for linking PIE programs.
+ifeq ($(with-clang),yes)
+# compiler-rt crt*.o also works for PIE.
++prectorS = $(+prector)
++postctorS = $(+postctor)
+else
+prectorS = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtbeginS.o`
+postctorS = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtendS.o`
+endif
# Variants of the two previous definitions for statically linking programs.
ifeq (yes,$(enable-static-pie))
# Static PIE must use PIE variants.
+prectorT = $(+prectorS)
+postctorT = $(+postctorS)
else
+ifeq ($(with-clang),yes)
+# compiler-rt crt*.o also works for static PIE.
++prectorT = $(+prector)
++postctorT = $(+postctor)
+else
+prectorT = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtbeginT.o`
+postctorT = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtend.o`
endif
+endif
csu-objpfx = $(common-objpfx)csu/
elf-objpfx = $(common-objpfx)elf/
^ permalink raw reply [flat|nested] 3+ messages in thread
* [glibc/maskray/grte] Use crt*.o files from llvm compiler-rt when building with clang
@ 2021-08-28 0:33 Fangrui Song
0 siblings, 0 replies; 3+ messages in thread
From: Fangrui Song @ 2021-08-28 0:33 UTC (permalink / raw)
To: glibc-cvs
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=e62db8fce49a3437dbda71e4b7058954595939f5
commit e62db8fce49a3437dbda71e4b7058954595939f5
Author: Stan Shebs <stanshebs@google.com>
Date: Tue Jun 9 10:09:34 2020 -0700
Use crt*.o files from llvm compiler-rt when building with clang
Diff:
---
Makeconfig | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/Makeconfig b/Makeconfig
index ff744a8f0d..f5cd92014f 100644
--- a/Makeconfig
+++ b/Makeconfig
@@ -661,20 +661,40 @@ libc.so-gnulib := -lgcc
endif
+preinit = $(addprefix $(csu-objpfx),crti.o)
+postinit = $(addprefix $(csu-objpfx),crtn.o)
+ifeq ($(with-clang),yes)
+# With clang, use the crt*.o files from llvm's compiler-rt package.
+# The files normally have an architecture name appended, in case of
+# variants (32/64, le/be etc) installed in the same directory.
++prector = `$(CC) $(sysdep-LDFLAGS) --print-file-name=clang_rt.crtbegin-$(config-machine).o`
++postctor = `$(CC) $(sysdep-LDFLAGS) --print-file-name=clang_rt.crtend-$(config-machine).o`
+else
+prector = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtbegin.o`
+postctor = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtend.o`
+endif
# Variants of the two previous definitions for linking PIE programs.
+ifeq ($(with-clang),yes)
+# compiler-rt crt*.o also works for PIE.
++prectorS = $(+prector)
++postctorS = $(+postctor)
+else
+prectorS = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtbeginS.o`
+postctorS = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtendS.o`
+endif
# Variants of the two previous definitions for statically linking programs.
ifeq (yes,$(enable-static-pie))
# Static PIE must use PIE variants.
+prectorT = $(+prectorS)
+postctorT = $(+postctorS)
else
+ifeq ($(with-clang),yes)
+# compiler-rt crt*.o also works for static PIE.
++prectorT = $(+prector)
++postctorT = $(+postctor)
+else
+prectorT = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtbeginT.o`
+postctorT = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtend.o`
endif
+endif
csu-objpfx = $(common-objpfx)csu/
elf-objpfx = $(common-objpfx)elf/
^ permalink raw reply [flat|nested] 3+ messages in thread
* [glibc/maskray/grte] Use crt*.o files from llvm compiler-rt when building with clang
@ 2021-08-27 23:46 Fangrui Song
0 siblings, 0 replies; 3+ messages in thread
From: Fangrui Song @ 2021-08-27 23:46 UTC (permalink / raw)
To: glibc-cvs
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=d6a51badbb349e170107ad7a4885a7e2b8a58ab3
commit d6a51badbb349e170107ad7a4885a7e2b8a58ab3
Author: Stan Shebs <stanshebs@google.com>
Date: Tue Jun 9 10:09:34 2020 -0700
Use crt*.o files from llvm compiler-rt when building with clang
Diff:
---
Makeconfig | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/Makeconfig b/Makeconfig
index ff744a8f0d..f5cd92014f 100644
--- a/Makeconfig
+++ b/Makeconfig
@@ -661,20 +661,40 @@ libc.so-gnulib := -lgcc
endif
+preinit = $(addprefix $(csu-objpfx),crti.o)
+postinit = $(addprefix $(csu-objpfx),crtn.o)
+ifeq ($(with-clang),yes)
+# With clang, use the crt*.o files from llvm's compiler-rt package.
+# The files normally have an architecture name appended, in case of
+# variants (32/64, le/be etc) installed in the same directory.
++prector = `$(CC) $(sysdep-LDFLAGS) --print-file-name=clang_rt.crtbegin-$(config-machine).o`
++postctor = `$(CC) $(sysdep-LDFLAGS) --print-file-name=clang_rt.crtend-$(config-machine).o`
+else
+prector = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtbegin.o`
+postctor = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtend.o`
+endif
# Variants of the two previous definitions for linking PIE programs.
+ifeq ($(with-clang),yes)
+# compiler-rt crt*.o also works for PIE.
++prectorS = $(+prector)
++postctorS = $(+postctor)
+else
+prectorS = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtbeginS.o`
+postctorS = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtendS.o`
+endif
# Variants of the two previous definitions for statically linking programs.
ifeq (yes,$(enable-static-pie))
# Static PIE must use PIE variants.
+prectorT = $(+prectorS)
+postctorT = $(+postctorS)
else
+ifeq ($(with-clang),yes)
+# compiler-rt crt*.o also works for static PIE.
++prectorT = $(+prector)
++postctorT = $(+postctor)
+else
+prectorT = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtbeginT.o`
+postctorT = `$(CC) $(sysdep-LDFLAGS) --print-file-name=crtend.o`
endif
+endif
csu-objpfx = $(common-objpfx)csu/
elf-objpfx = $(common-objpfx)elf/
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2021-08-28 0:33 UTC | newest]
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