diff options
authorMike Crowe <>2018-10-05 14:49:13 +0100
committerRichard Purdie <>2018-10-09 12:02:41 +0100
commit2f9f02d5fda9884ccf9ae22ceb00d59b99036a49 (patch)
parent4ee2f87f0c9540c7e2c866dbc9739e21a618bddf (diff)
gcc: Remove unnecessary --with-mpfr and --with-mpc when cross compiling
Passing --with-mpfr and --with-mpc when compiling the cross compiler appears to be at best unnecessary, and at worst can cause build failures. Firstly, the paths passed in gcc-cross-canadian are using the undefined ${layout_exec_prefix}. This results in configure passing -I${STAGING_DIR_HOST}/include twice to the compiler when it's doing its test builds. This is mostly pointless since that directory doesn't exist with the default oe-core configuration - the correct path would be -I${STAGING_DIR_HOST}/usr/include. The path for mpfr passed in gcc-cross is correct, but unnecessary since it is just the sysroot default. I've gone back through the history, and it seems that these lines (or similar ones) were originally added way back in 8800d8be25295dd7c7d84dde62c3be4df8e43346 for GCC 4.1.1 in 2006! I asked[1] if anyone knew why this was necessary but received no response, so I can only assume that no-one knows. I've successfully built for various targets with this patch applied and observed no problems. [1] Signed-off-by: Mike Crowe <> Signed-off-by: Richard Purdie <>
2 files changed, 0 insertions, 6 deletions
diff --git a/meta/recipes-devtools/gcc/ b/meta/recipes-devtools/gcc/
index bdd6f7ec82..2f32d3407f 100644
--- a/meta/recipes-devtools/gcc/
+++ b/meta/recipes-devtools/gcc/
@@ -160,11 +160,6 @@ SYSTEMLIBS1 = "${target_libdir}/"
EXTRA_OECONF += "--enable-poison-system-directories"
- --with-mpfr=${STAGING_DIR_HOST}${layout_exec_prefix} \
- --with-mpc=${STAGING_DIR_HOST}${layout_exec_prefix} \
EXTRA_OECONF_append_libc-baremetal = " --without-headers"
EXTRA_OECONF_remove_libc-baremetal = "--with-sysroot=/not/exist"
EXTRA_OECONF_remove_libc-baremetal = "--with-build-sysroot=${STAGING_DIR_TARGET}"
diff --git a/meta/recipes-devtools/gcc/ b/meta/recipes-devtools/gcc/
index 95f5968fd4..89b19684be 100644
--- a/meta/recipes-devtools/gcc/
+++ b/meta/recipes-devtools/gcc/
@@ -28,7 +28,6 @@ EXTRA_OECONF_append_sh4 = " \
- --with-mpfr=${STAGING_DIR_NATIVE}${prefix_native} \
--with-system-zlib \