(address . guix-patches@gnu.org)(name . Leo Nikkilä)(address . hello@lnikki.la)
20250111014408.14204-1-hello@lnikki.la
These prefixes must have a trailing slash.[0] When this slash is
omitted, gcc fails to find ?crt*.o files when LIBRARY_PATH is not set:
$ uname -a
Linux guix 6.10.14-gnu #1 SMP PREEMPT_DYNAMIC 1 aarch64 GNU/Linux
$ guix shell --pure gcc-toolchain -- /bin/sh -c 'LIBRARY_PATH= gcc hello.c'
ld: cannot find crt1.o: No such file or directory
ld: cannot find crti.o: No such file or directory
collect2: error: ld returned 1 exit status
I ran into this when building Yocto images in Guix containers, where
bitbake resets the environment and expects an FHS system.
Looking at `-print-search-dirs', the prefix is definitely present at the
end of the startfiles prefixes list[1]:
$ guix shell --pure gcc-toolchain -- /bin/sh -c 'LIBRARY_PATH= gcc -print-search-dirs'
<...>
libraries: <...>:/gnu/store/3gvs8sw95ldfypr1n688svl5brwdmdi9-glibc-2.39/lib
However, looking closer with strace, gcc is trying to find crt1.o at
`/lib../lib/crt1.o' and `/libcrt1.o', which are paths that have been
mangled due to the missing slash:
$ guix shell --pure gcc-toolchain strace -- /bin/sh -c 'LIBRARY_PATH= strace -e trace=file gcc hello.c' 2>&1 | grep /gnu/store/3gvs8sw95ldfypr1n688svl5brwdmdi9-glibc-2.39/lib
<...>
faccessat(AT_FDCWD, "/gnu/store/3gvs8sw95ldfypr1n688svl5brwdmdi9-glibc-2.39/lib../lib/crt1.o", R_OK) = -1 ENOENT (No such file or directory)
faccessat(AT_FDCWD, "/gnu/store/3gvs8sw95ldfypr1n688svl5brwdmdi9-glibc-2.39/libcrt1.o", R_OK) = -1 ENOENT (No such file or directory)
<...>
* gnu/packages/gcc.scm (gcc-4.7): Fix replaced startfile prefix.
[arguments]: <#:phases>: Fix it.
---
gnu/packages/gcc.scm | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
Toggle diff (24 lines)
diff --git a/gnu/packages/gcc.scm b/gnu/packages/gcc.scm
index 6247919fec..3af2fe5c31 100644
--- a/gnu/packages/gcc.scm
+++ b/gnu/packages/gcc.scm
@@ -285,7 +285,7 @@ (define-public gcc-4.7
\"-L~a/lib %{!static:-rpath=~a/lib %{!static-libgcc:-rpath=~a/lib -lgcc_s}} \" ~a"
libc libc libdir suffix))
(("#define GNU_USER_TARGET_STARTFILE_SPEC.*$" line)
- (format #f "#define STANDARD_STARTFILE_PREFIX_1 \"~a/lib\"
+ (format #f "#define STANDARD_STARTFILE_PREFIX_1 \"~a/lib/\"
#define STANDARD_STARTFILE_PREFIX_2 \"\"
~a"
libc line)))
@@ -299,7 +299,7 @@ (define-public gcc-4.7
\"-L~a/lib %{!static:-rpath=~a/lib %{!static-libgcc:-rpath=~a/lib -lgcc_s}} \" ~a"
libc libc libdir suffix))
(("#define STARTFILE_LINUX_SPEC.*$" line)
- (format #f "#define STANDARD_STARTFILE_PREFIX_1 \"~a/lib\"
+ (format #f "#define STANDARD_STARTFILE_PREFIX_1 \"~a/lib/\"
#define STANDARD_STARTFILE_PREFIX_2 \"\"
~a"
libc line))))
--
2.46.0