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cmd/go: pass CGO_FLAGS to C compiler when compiling _cgo_main.c or gccgo #23323

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conradoplg opened this issue Jan 3, 2018 · 7 comments
Open

cmd/go: pass CGO_FLAGS to C compiler when compiling _cgo_main.c or gccgo #23323

conradoplg opened this issue Jan 3, 2018 · 7 comments
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NeedsFix The path to resolution is known, but the work has not been done.
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@conradoplg
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I'm unable to compile go-sqlite3 with gccgo for the PowerPC plataform.

What version of Go are you using (go version)?

go version go1.8.3 gccgo (Ubuntu 7.2.0-8ubuntu3) 7.2.0 linux/amd64

Does this issue reproduce with the latest release?

I have not tested with the latest since the above is the highest version available as pre-compiled package in Ubuntu

What operating system and processor architecture are you using (go env)?

Cross-compiling to ppc with gccgo

GOARCH="ppc"
GOBIN=""
GOEXE=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOOS="linux"
GOPATH="/go"
GORACE=""
GOROOT="/usr"
GOTOOLDIR="/usr/lib/gcc/x86_64-linux-gnu/7"
GCCGO="/usr/bin/powerpc-linux-gnuspe-gccgo"
CC="powerpc-fsl-linux-gnuspe-gcc"
GOGCCFLAGS="-m32 -mcpu=8548 -mabi=spe -mspe -mfloat-gprs=double --sysroot=/opt/fsl/2.0/sysroots/ppce500v2-fsl-linux-gnuspe -fPIC -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build540675113=/tmp/go-build -gno-record-gcc-switches"
CXX="powerpc-fsl-linux-gnuspe-g++"
CGO_ENABLED="1"
PKG_CONFIG="pkg-config"
CGO_CFLAGS="-m32 -mcpu=8548 -mabi=spe -mspe -mfloat-gprs=double --sysroot=/opt/fsl/2.0/sysroots/ppce500v2-fsl-linux-gnuspe -O2 -pipe -g -feliminate-unused-debug-types"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="--sysroot=/opt/fsl/2.0/sysroots/ppce500v2-fsl-linux-gnuspe -Wl,-O1 -Wl,--hash-style=gnu -Wl,--as-needed"

C compiler:

powerpc-fsl-linux-gnuspe-gcc --version
powerpc-fsl-linux-gnuspe-gcc (GCC) 4.9.2

What did you do?

Attempt to install go-sqlite3:

GCCGO=powerpc-linux-gnuspe-gccgo CGO_ENABLED=1 GOARCH=ppc CGO_ENABLED=1 go-7 get -x github.com/mattn/go-sqlite3

What did you expect to see?

Package compiling

What did you see instead?

Compilation fails with

In file included from cgo-c-prolog-gccgo:1:0:
/opt/fsl/2.0/sysroots/x86_64-fslsdk-linux/usr/lib/powerpc-fsl-linux/gcc/powerpc-fsl-linux/4.9.2/include/stdint.h:9:26: fatal error: stdint.h: No such file or directory
 # include_next <stdint.h>
                          ^
compilation terminated.

The compiler I'm using requires some flags to work, in particular the --sysroot flag. This is specified in the CC variable which currently is:

powerpc-fsl-linux-gnuspe-gcc -m32 -mcpu=8548 -mabi=spe -mspe -mfloat-gprs=double --sysroot=/opt/fsl/2.0/sysroots/ppce500v2-fsl-linux-gnuspe

The above works with the older go version go1.4.2 gccgo (Ubuntu 5.4.0-6ubuntu1~16.04.5) 5.4.0 20160609 linux/amd64. However, with the version indicated above, the compilation fails because go does not include the flags specified in the CC variable. I managed to work around this by setting CGO_CFLAGS and CGO_LDFLAGS, as can be viewed above. However, I still get a compilation error, because apparently gccgo (or cgo?) is not including the CGO_CFLAGS when compiling _cgo_defun.c as can be viewed in the verbose output below:

GCCGO=powerpc-linux-gnuspe-gccgo CGO_ENABLED=1 GOARCH=ppc CGO_ENABLED=1 go-7 get -x github.com/mattn/go-sqlite3
cd .
git clone https://github.com/mattn/go-sqlite3 /go/src/github.com/mattn/go-sqlite3
cd /go/src/github.com/mattn/go-sqlite3
git submodule update --init --recursive
cd /go/src/github.com/mattn/go-sqlite3
git show-ref
cd /go/src/github.com/mattn/go-sqlite3
git submodule update --init --recursive
cd .
git clone https://go.googlesource.com/net /go/src/golang.org/x/net
cd /go/src/golang.org/x/net
git submodule update --init --recursive
cd /go/src/golang.org/x/net
git show-ref
cd /go/src/golang.org/x/net
git submodule update --init --recursive
WORK=/tmp/go-build601413480
mkdir -p $WORK/golang.org/x/net/context/_obj/
mkdir -p $WORK/golang.org/x/net/
cd /go/src/golang.org/x/net/context
/usr/bin/powerpc-linux-gnuspe-gccgo -I $WORK -c -g -fgo-pkgpath=golang.org/x/net/context -fgo-relative-import-path=_/go/src/golang.org/x/net/context -o $WORK/golang.org/x/net/context/_obj/_go_.o ./context.go ./go17.go ./pre_go19.go
ar rc $WORK/golang.org/x/net/libcontext.a $WORK/golang.org/x/net/context/_obj/_go_.o
mkdir -p /go/pkg/gccgo_linux_ppc/golang.org/x/net/
cp $WORK/golang.org/x/net/libcontext.a /go/pkg/gccgo_linux_ppc/golang.org/x/net/libcontext.a
mkdir -p $WORK/github.com/mattn/go-sqlite3/_obj/
mkdir -p $WORK/github.com/mattn/
cd /go/src/github.com/mattn/go-sqlite3
CGO_LDFLAGS="--sysroot=/opt/fsl/2.0/sysroots/ppce500v2-fsl-linux-gnuspe" "-Wl,-O1" "-Wl,--hash-style=gnu" "-Wl,--as-needed" "-ldl" /usr/lib/gcc/x86_64-linux-gnu/7/cgo -objdir $WORK/github.com/mattn/go-sqlite3/_obj/ -importpath github.com/mattn/go-sqlite3 -gccgo -gccgopkgpath=github.com/mattn/go-sqlite3 -- -I $WORK/github.com/mattn/go-sqlite3/_obj/ -m32 -mcpu=8548 -mabi=spe -mspe -mfloat-gprs=double --sysroot=/opt/fsl/2.0/sysroots/ppce500v2-fsl-linux-gnuspe -O2 -pipe -g -feliminate-unused-debug-types -std=gnu99 -DSQLITE_ENABLE_RTREE -DSQLITE_THREADSAFE=1 -DSQLITE_ENABLE_FTS3 -DSQLITE_ENABLE_FTS3_PARENTHESIS -DSQLITE_ENABLE_FTS4_UNICODE61 -DSQLITE_TRACE_SIZE_LIMIT=15 -DSQLITE_DISABLE_INTRINSIC -Wno-deprecated-declarations -I. backup.go callback.go error.go sqlite3.go sqlite3_context.go sqlite3_load_extension.go sqlite3_other.go sqlite3_type.go
cd $WORK
powerpc-fsl-linux-gnuspe-gcc -fdebug-prefix-map=a=b -c trivial.c
powerpc-fsl-linux-gnuspe-gcc -gno-record-gcc-switches -c trivial.c
cd /go/src/github.com/mattn/go-sqlite3
powerpc-fsl-linux-gnuspe-gcc -I . -fPIC -pthread -fmessage-length=0 -fdebug-prefix-map=$WORK=/tmp/go-build -gno-record-gcc-switches -I $WORK/github.com/mattn/go-sqlite3/_obj/ -m32 -mcpu=8548 -mabi=spe -mspe -mfloat-gprs=double --sysroot=/opt/fsl/2.0/sysroots/ppce500v2-fsl-linux-gnuspe -O2 -pipe -g -feliminate-unused-debug-types -std=gnu99 -DSQLITE_ENABLE_RTREE -DSQLITE_THREADSAFE=1 -DSQLITE_ENABLE_FTS3 -DSQLITE_ENABLE_FTS3_PARENTHESIS -DSQLITE_ENABLE_FTS4_UNICODE61 -DSQLITE_TRACE_SIZE_LIMIT=15 -DSQLITE_DISABLE_INTRINSIC -Wno-deprecated-declarations -I. -o $WORK/github.com/mattn/go-sqlite3/_obj/_cgo_export.o -c $WORK/github.com/mattn/go-sqlite3/_obj/_cgo_export.c
powerpc-fsl-linux-gnuspe-gcc -I . -fPIC -pthread -fmessage-length=0 -fdebug-prefix-map=$WORK=/tmp/go-build -gno-record-gcc-switches -I $WORK/github.com/mattn/go-sqlite3/_obj/ -m32 -mcpu=8548 -mabi=spe -mspe -mfloat-gprs=double --sysroot=/opt/fsl/2.0/sysroots/ppce500v2-fsl-linux-gnuspe -O2 -pipe -g -feliminate-unused-debug-types -std=gnu99 -DSQLITE_ENABLE_RTREE -DSQLITE_THREADSAFE=1 -DSQLITE_ENABLE_FTS3 -DSQLITE_ENABLE_FTS3_PARENTHESIS -DSQLITE_ENABLE_FTS4_UNICODE61 -DSQLITE_TRACE_SIZE_LIMIT=15 -DSQLITE_DISABLE_INTRINSIC -Wno-deprecated-declarations -I. -o $WORK/github.com/mattn/go-sqlite3/_obj/backup.cgo2.o -c $WORK/github.com/mattn/go-sqlite3/_obj/backup.cgo2.c
powerpc-fsl-linux-gnuspe-gcc -I . -fPIC -pthread -fmessage-length=0 -fdebug-prefix-map=$WORK=/tmp/go-build -gno-record-gcc-switches -I $WORK/github.com/mattn/go-sqlite3/_obj/ -m32 -mcpu=8548 -mabi=spe -mspe -mfloat-gprs=double --sysroot=/opt/fsl/2.0/sysroots/ppce500v2-fsl-linux-gnuspe -O2 -pipe -g -feliminate-unused-debug-types -std=gnu99 -DSQLITE_ENABLE_RTREE -DSQLITE_THREADSAFE=1 -DSQLITE_ENABLE_FTS3 -DSQLITE_ENABLE_FTS3_PARENTHESIS -DSQLITE_ENABLE_FTS4_UNICODE61 -DSQLITE_TRACE_SIZE_LIMIT=15 -DSQLITE_DISABLE_INTRINSIC -Wno-deprecated-declarations -I. -o $WORK/github.com/mattn/go-sqlite3/_obj/callback.cgo2.o -c $WORK/github.com/mattn/go-sqlite3/_obj/callback.cgo2.c
powerpc-fsl-linux-gnuspe-gcc -I . -fPIC -pthread -fmessage-length=0 -fdebug-prefix-map=$WORK=/tmp/go-build -gno-record-gcc-switches -I $WORK/github.com/mattn/go-sqlite3/_obj/ -m32 -mcpu=8548 -mabi=spe -mspe -mfloat-gprs=double --sysroot=/opt/fsl/2.0/sysroots/ppce500v2-fsl-linux-gnuspe -O2 -pipe -g -feliminate-unused-debug-types -std=gnu99 -DSQLITE_ENABLE_RTREE -DSQLITE_THREADSAFE=1 -DSQLITE_ENABLE_FTS3 -DSQLITE_ENABLE_FTS3_PARENTHESIS -DSQLITE_ENABLE_FTS4_UNICODE61 -DSQLITE_TRACE_SIZE_LIMIT=15 -DSQLITE_DISABLE_INTRINSIC -Wno-deprecated-declarations -I. -o $WORK/github.com/mattn/go-sqlite3/_obj/error.cgo2.o -c $WORK/github.com/mattn/go-sqlite3/_obj/error.cgo2.c
powerpc-fsl-linux-gnuspe-gcc -I . -fPIC -pthread -fmessage-length=0 -fdebug-prefix-map=$WORK=/tmp/go-build -gno-record-gcc-switches -I $WORK/github.com/mattn/go-sqlite3/_obj/ -m32 -mcpu=8548 -mabi=spe -mspe -mfloat-gprs=double --sysroot=/opt/fsl/2.0/sysroots/ppce500v2-fsl-linux-gnuspe -O2 -pipe -g -feliminate-unused-debug-types -std=gnu99 -DSQLITE_ENABLE_RTREE -DSQLITE_THREADSAFE=1 -DSQLITE_ENABLE_FTS3 -DSQLITE_ENABLE_FTS3_PARENTHESIS -DSQLITE_ENABLE_FTS4_UNICODE61 -DSQLITE_TRACE_SIZE_LIMIT=15 -DSQLITE_DISABLE_INTRINSIC -Wno-deprecated-declarations -I. -o $WORK/github.com/mattn/go-sqlite3/_obj/sqlite3.cgo2.o -c $WORK/github.com/mattn/go-sqlite3/_obj/sqlite3.cgo2.c
powerpc-fsl-linux-gnuspe-gcc -I . -fPIC -pthread -fmessage-length=0 -fdebug-prefix-map=$WORK=/tmp/go-build -gno-record-gcc-switches -I $WORK/github.com/mattn/go-sqlite3/_obj/ -m32 -mcpu=8548 -mabi=spe -mspe -mfloat-gprs=double --sysroot=/opt/fsl/2.0/sysroots/ppce500v2-fsl-linux-gnuspe -O2 -pipe -g -feliminate-unused-debug-types -std=gnu99 -DSQLITE_ENABLE_RTREE -DSQLITE_THREADSAFE=1 -DSQLITE_ENABLE_FTS3 -DSQLITE_ENABLE_FTS3_PARENTHESIS -DSQLITE_ENABLE_FTS4_UNICODE61 -DSQLITE_TRACE_SIZE_LIMIT=15 -DSQLITE_DISABLE_INTRINSIC -Wno-deprecated-declarations -I. -o $WORK/github.com/mattn/go-sqlite3/_obj/sqlite3_context.cgo2.o -c $WORK/github.com/mattn/go-sqlite3/_obj/sqlite3_context.cgo2.c
powerpc-fsl-linux-gnuspe-gcc -I . -fPIC -pthread -fmessage-length=0 -fdebug-prefix-map=$WORK=/tmp/go-build -gno-record-gcc-switches -I $WORK/github.com/mattn/go-sqlite3/_obj/ -m32 -mcpu=8548 -mabi=spe -mspe -mfloat-gprs=double --sysroot=/opt/fsl/2.0/sysroots/ppce500v2-fsl-linux-gnuspe -O2 -pipe -g -feliminate-unused-debug-types -std=gnu99 -DSQLITE_ENABLE_RTREE -DSQLITE_THREADSAFE=1 -DSQLITE_ENABLE_FTS3 -DSQLITE_ENABLE_FTS3_PARENTHESIS -DSQLITE_ENABLE_FTS4_UNICODE61 -DSQLITE_TRACE_SIZE_LIMIT=15 -DSQLITE_DISABLE_INTRINSIC -Wno-deprecated-declarations -I. -o $WORK/github.com/mattn/go-sqlite3/_obj/sqlite3_load_extension.cgo2.o -c $WORK/github.com/mattn/go-sqlite3/_obj/sqlite3_load_extension.cgo2.c
powerpc-fsl-linux-gnuspe-gcc -I . -fPIC -pthread -fmessage-length=0 -fdebug-prefix-map=$WORK=/tmp/go-build -gno-record-gcc-switches -I $WORK/github.com/mattn/go-sqlite3/_obj/ -m32 -mcpu=8548 -mabi=spe -mspe -mfloat-gprs=double --sysroot=/opt/fsl/2.0/sysroots/ppce500v2-fsl-linux-gnuspe -O2 -pipe -g -feliminate-unused-debug-types -std=gnu99 -DSQLITE_ENABLE_RTREE -DSQLITE_THREADSAFE=1 -DSQLITE_ENABLE_FTS3 -DSQLITE_ENABLE_FTS3_PARENTHESIS -DSQLITE_ENABLE_FTS4_UNICODE61 -DSQLITE_TRACE_SIZE_LIMIT=15 -DSQLITE_DISABLE_INTRINSIC -Wno-deprecated-declarations -I. -o $WORK/github.com/mattn/go-sqlite3/_obj/sqlite3_other.cgo2.o -c $WORK/github.com/mattn/go-sqlite3/_obj/sqlite3_other.cgo2.c
powerpc-fsl-linux-gnuspe-gcc -I . -fPIC -pthread -fmessage-length=0 -fdebug-prefix-map=$WORK=/tmp/go-build -gno-record-gcc-switches -I $WORK/github.com/mattn/go-sqlite3/_obj/ -m32 -mcpu=8548 -mabi=spe -mspe -mfloat-gprs=double --sysroot=/opt/fsl/2.0/sysroots/ppce500v2-fsl-linux-gnuspe -O2 -pipe -g -feliminate-unused-debug-types -std=gnu99 -DSQLITE_ENABLE_RTREE -DSQLITE_THREADSAFE=1 -DSQLITE_ENABLE_FTS3 -DSQLITE_ENABLE_FTS3_PARENTHESIS -DSQLITE_ENABLE_FTS4_UNICODE61 -DSQLITE_TRACE_SIZE_LIMIT=15 -DSQLITE_DISABLE_INTRINSIC -Wno-deprecated-declarations -I. -o $WORK/github.com/mattn/go-sqlite3/_obj/sqlite3_type.cgo2.o -c $WORK/github.com/mattn/go-sqlite3/_obj/sqlite3_type.cgo2.c
powerpc-fsl-linux-gnuspe-gcc -I . -fPIC -pthread -fmessage-length=0 -fdebug-prefix-map=$WORK=/tmp/go-build -gno-record-gcc-switches -I $WORK/github.com/mattn/go-sqlite3/_obj/ -m32 -mcpu=8548 -mabi=spe -mspe -mfloat-gprs=double --sysroot=/opt/fsl/2.0/sysroots/ppce500v2-fsl-linux-gnuspe -O2 -pipe -g -feliminate-unused-debug-types -std=gnu99 -DSQLITE_ENABLE_RTREE -DSQLITE_THREADSAFE=1 -DSQLITE_ENABLE_FTS3 -DSQLITE_ENABLE_FTS3_PARENTHESIS -DSQLITE_ENABLE_FTS4_UNICODE61 -DSQLITE_TRACE_SIZE_LIMIT=15 -DSQLITE_DISABLE_INTRINSIC -Wno-deprecated-declarations -I. -o $WORK/github.com/mattn/go-sqlite3/_obj/sqlite3-binding.o -c ./sqlite3-binding.c
powerpc-fsl-linux-gnuspe-gcc -Wall -g -I $WORK/github.com/mattn/go-sqlite3/_obj/ -I /usr/pkg/include -o $WORK/github.com/mattn/go-sqlite3/_obj/_cgo_defun.o -D GOOS_linux -D GOARCH_ppc -D "GOPKGPATH=\"github_com_mattn_go_sqlite3\"" -c $WORK/github.com/mattn/go-sqlite3/_obj/_cgo_defun.c
# github.com/mattn/go-sqlite3
In file included from cgo-c-prolog-gccgo:1:0:
/opt/fsl/2.0/sysroots/x86_64-fslsdk-linux/usr/lib/powerpc-fsl-linux/gcc/powerpc-fsl-linux/4.9.2/include/stdint.h:9:26: fatal error: stdint.h: No such file or directory
 # include_next <stdint.h>
                          ^
compilation terminated.

Observe that the last compiler invocation did not include the contents of CGO_CFLAGS, preventing --sysroot being passed which messes the include path and makes compilation fail.
@gopherbot gopherbot added this to the Gccgo milestone Jan 3, 2018
@odeke-em odeke-em changed the title gccgo: cgo is not respecting CGO_FLAGS cmd/cgo: gccgo doesn't seem to be respecting CGO_FLAGS Jan 7, 2018
@odeke-em
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odeke-em commented Jan 7, 2018

/cc @ianlancetaylor @hirochachacha

@hirochachacha
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Maybe

diff --git a/src/cmd/go/internal/work/gccgo.go b/src/cmd/go/internal/work/gccgo.go
index 37a828f592..74d3820a66 100644
--- a/src/cmd/go/internal/work/gccgo.go
+++ b/src/cmd/go/internal/work/gccgo.go
@@ -464,8 +464,11 @@ func (tools gccgoToolchain) cc(b *Builder, a *Action, ofile, cfile string) error
                defs = append(defs, "-fsplit-stack")
        }
        defs = tools.maybePIC(defs)
-       return b.run(a, p.Dir, p.ImportPath, nil, envList("CC", cfg.DefaultCC(cfg.Goos, cfg.Goarch)), "-Wall", "-g",
-               "-I", a.Objdir, "-I", inc, "-o", ofile, defs, "-c", cfile)
+       return b.run(a, p.Dir, p.ImportPath, nil,
+               envList("CC", cfg.DefaultCC(cfg.Goos, cfg.Goarch)),
+               envList("CGO_CPPFLAGS", ""),
+               envList("CGO_CFLAGS", "-Wall -g"), "-I", a.Objdir, "-I", inc, "-o", ofile, defs, "-c", cfile,
+       )
 }

 // maybePIC adds -fPIC to the list of arguments if needed..

I don't have a test environment.

@ianlancetaylor
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That suggestion isn't exactly right, as we should also be using the package local #cgo CFLAGS: when compiling _cgo_defun.c.

@ianlancetaylor ianlancetaylor changed the title cmd/cgo: gccgo doesn't seem to be respecting CGO_FLAGS cmd/go: pass CGO_FLAGS to C compiler when compiling _cgo_main.c or gccgo Jan 25, 2018
@ianlancetaylor ianlancetaylor added the NeedsFix The path to resolution is known, but the work has not been done. label Jan 25, 2018
@ianlancetaylor ianlancetaylor modified the milestones: Gccgo, Go1.11 Jan 25, 2018
@Aven12
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Aven12 commented May 1, 2018

Is there a work around for this? Or just wait for Go1.11?

@ianlancetaylor
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I think it works to add the options to the CC environment variable.

@ianlancetaylor ianlancetaylor modified the milestones: Go1.11, Go1.12 Jul 6, 2018
@Aven12
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Aven12 commented Aug 19, 2018 •
edited

The workaround for the CC environment variable does seem to work for me. Any ideas what I'm doing wrong?


root@2fe6f091a637:/mnt# echo $CC
/opt/cross/gcc --sysroot=/opt/fsl-qoriq/2.0/sysroots/ppc64e6500-fsl-linux
root@2fe6f091a637:/mnt# go env
GOARCH="ppc64"
GOBIN=""
GOEXE=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOOS="linux"
GOPATH="/home/docker-path"
GORACE=""
GOROOT="/home/go"
GOTOOLDIR="/opt/gccgo-cross/usr/libexec/gcc/x86_64-linux/7.3.0"
GCCGO="/opt/gccgo-cross/usr/bin/powerpc64-fsl-linux-gccgo"
CC="/opt/cross/gcc"
GOGCCFLAGS="--sysroot=/opt/fsl-qoriq/2.0/sysroots/ppc64e6500-fsl-linux -fPIC -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build376397185=/tmp/go-build -gno-record-gcc-switches"
CXX="/opt/gccgo-cross/usr/bin/powerpc64-fsl-linux-g++"
CGO_ENABLED="1"
PKG_CONFIG="pkg-config"
CGO_CFLAGS="-g -O2 --sysroot=/opt/fsl-qoriq/2.0/sysroots/ppc64e6500-fsl-linux"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
root@2fe6f091a637:/mnt# go get -x github.com/mattn/go-sqlite3
WORK=/tmp/go-build361126006
mkdir -p $WORK/github.com/mattn/go-sqlite3/_obj/
mkdir -p $WORK/github.com/mattn/
cd /home/docker-path/src/github.com/mattn/go-sqlite3
CGO_LDFLAGS="-g" "-O2" "-ldl" "-lpthread" /opt/gccgo-cross/usr/libexec/gcc/x86_64-linux/7.3.0/cgo -objdir $WORK/github.com/mattn/go-sqlite3/_obj/ -importpath github.com/mattn/go-sqlite3 -gccgo -gccgopkgpath=github.com/mattn/go-sqlite3 -- -I $WORK/github.com/mattn/go-sqlite3/_obj/ -g -O2 --sysroot=/opt/fsl-qoriq/2.0/sysroots/ppc64e6500-fsl-linux -std=gnu99 -DSQLITE_ENABLE_RTREE -DSQLITE_THREADSAFE=1 -DHAVE_USLEEP=1 -DSQLITE_ENABLE_FTS3 -DSQLITE_ENABLE_FTS3_PARENTHESIS -DSQLITE_ENABLE_FTS4_UNICODE61 -DSQLITE_TRACE_SIZE_LIMIT=15 -DSQLITE_OMIT_DEPRECATED -DSQLITE_DISABLE_INTRINSIC -DSQLITE_DEFAULT_WAL_SYNCHRONOUS=1 -DSQLITE_ENABLE_UPDATE_DELETE_LIMIT -Wno-deprecated-declarations -DHAVE_PREAD64=1 -DHAVE_PWRITE64=1 -I. backup.go callback.go error.go sqlite3.go sqlite3_context.go sqlite3_load_extension.go sqlite3_opt_userauth_omit.go sqlite3_other.go sqlite3_type.go
# github.com/mattn/go-sqlite3
In file included from /home/docker-path/src/github.com/mattn/go-sqlite3/backup.go:14:0:
/opt/fsl-qoriq/2.0/sysroots/ppc64e6500-fsl-linux/usr/include/stdlib.h:30:26: error: no include path in which to search for stdlib.h
 # include_next <stdlib.h>
                          ^
root@2fe6f091a637:/mnt#

@conradoplg
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I haven't tested with newer gccgo versions, but in my original report the whole problem resulted from gccgo not using the flags specified in CC anymore, just the binary path. Maybe that's a separate bug?

@bcmills bcmills modified the milestones: Go1.12, Go1.13 Nov 15, 2018
@andybons andybons modified the milestones: Go1.13, Go1.14 Jul 8, 2019
@rsc rsc modified the milestones: Go1.14, Backlog Oct 9, 2019
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@conradoplg @rsc @andybons @hirochachacha @ianlancetaylor @odeke-em @bcmills @gopherbot @Aven12