我正在尝试为 Android 交叉编译一些东西，所以我使用了一个单独的工具链。链接器抱怨它找不到一个库：
arm-eabi-gcc: fatal error: -fuse-linker-plugin, but liblto_plugin.so not found
该库肯定存在于此路径中：
$ ls -l /mnt/hgfs/Documents/thesis/android-wmon/core/os/prebuilts/gcc/linux-x86/arm/arm-eabi-4.6/libexec/gcc/arm-eabi/4.6.x-google
total 70053
-rwxr-xr-x 1 501 dialout 47040814 Oct 3 14:29 cc1
-rwxr-xr-x 1 501 dialout 50903764 Oct 3 14:29 cc1plus
-rwxr-xr-x 1 501 dialout 423914 Oct 3 14:29 collect2
drwxr-xr-x 1 501 dialout 204 Oct 3 14:29 install-tools
-rwxr-xr-x 1 501 dialout 1090 Oct 3 14:29 libfunction_reordering_plugin.la
lrwxr-xr-x 1 501 dialout 38 Oct 3 14:29 libfunction_reordering_plugin.so -> libfunction_reordering_plugin.so.0.0.0
lrwxr-xr-x 1 501 dialout 38 Oct 3 14:29 libfunction_reordering_plugin.so.0 -> libfunction_reordering_plugin.so.0.0.0
-rwxr-xr-x 1 501 dialout 89427 Oct 3 14:29 libfunction_reordering_plugin.so.0.0.0
-rwxr-xr-x 1 501 dialout 994 Oct 3 14:29 liblto_plugin.la
lrwxr-xr-x 1 501 dialout 22 Oct 3 14:29 liblto_plugin.so -> liblto_plugin.so.0.0.0
lrwxr-xr-x 1 501 dialout 22 Oct 3 14:29 liblto_plugin.so.0 -> liblto_plugin.so.0.0.0
-rwxr-xr-x 1 501 dialout 238575 Oct 3 14:29 liblto_plugin.so.0.0.0
-rwxr-xr-x 1 501 dialout 44647203 Oct 3 14:29 lto1
-rwxr-xr-x 1 501 dialout 114284 Oct 3 14:29 lto-wrapper
因此，在我的编译行中，我包含了“-L/mnt/hgfs/Documents/thesis/android-wmon/core/os/prebuilts/gcc/linux-x86/arm/arm-eabi-4.6/libexec/gcc/arm- eabi/4.6.x-google”，然后指定“-lliblto_plugin”......但我仍然继续收到此错误。
这是我的整行和错误：
arm-eabi-gcc -o test \
-I/mnt/hgfs/Documents/thesis/android-wmon/core/os/../android-ndk-r8b-linux/platforms/android-14/arch-arm/usr/include \
-I/mnt/hgfs/Documents/thesis/android-wmon/core/os/../ported-deps/jni/libgcrypt/src \
-I/mnt/hgfs/Documents/thesis/android-wmon/core/os/../ported-deps/jni/libgpg-error/src \
-I/mnt/hgfs/Documents/thesis/android-wmon/core/os/system/core/include \
-I/mnt/hgfs/Documents/thesis/android-wmon/core/os/hardware/libhardware/include \
-I/mnt/hgfs/Documents/thesis/android-wmon/core/os/hardware/ril/include \
-I/mnt/hgfs/Documents/thesis/android-wmon/core/os/dalvik/libnativehelper/include \
-I/mnt/hgfs/Documents/thesis/android-wmon/core/os/frameworks/base/include \
-I/mnt/hgfs/Documents/thesis/android-wmon/core/os/external/skia/include \
-I/mnt/hgfs/Documents/thesis/android-wmon/core/os/out/target/product/generic/obj/include \
-I/mnt/hgfs/Documents/thesis/android-wmon/core/os/bionic/libc/arch-arm/include \
-I/mnt/hgfs/Documents/thesis/android-wmon/core/os/bionic/libc/include \
-I/mnt/hgfs/Documents/thesis/android-wmon/core/os/bionic/libstdc++/include \
-I/mnt/hgfs/Documents/thesis/android-wmon/core/os/bionic/libc/kernel/common \
-I/mnt/hgfs/Documents/thesis/android-wmon/core/os/bionic/libc/kernel/arch-arm \
-I/mnt/hgfs/Documents/thesis/android-wmon/core/os/bionic/libm/include \
-I/mnt/hgfs/Documents/thesis/android-wmon/core/os/bionic/libm/include/arch/arm \
-I/mnt/hgfs/Documents/thesis/android-wmon/core/os/bionic/libthread_db/include \
-I/mnt/hgfs/Documents/thesis/android-wmon/core/os/bionic/libm/arm \
-I/mnt/hgfs/Documents/thesis/android-wmon/core/os/bionic/libm \
-I/mnt/hgfs/Documents/thesis/android-wmon/core/os/out/target/product/generic/obj/SHARED_LIBRARIES/libm_intermediates \
-D__ARM_ARCH_5__ -D__ARM_ARCH_5T__ -D__ARM_ARCH_5E__ -D__ARM_ARCH_5TE__ -DANDROID -DSK_RELEASE -DNDEBUG \
-include /mnt/hgfs/Documents/thesis/android-wmon/core/os/system/core/include/arch/linux-arm/AndroidConfig.h \
-UDEBUG -march=armv5te -mtune=xscale -msoft-float -mthumb-interwork \
-fpic -fno-exceptions -ffunction-sections -funwind-tables -fstack-protector -fmessage-length=0 \
test.c \
-Bdynamic -Wl,-T,/mnt/hgfs/Documents/thesis/android-wmon/core/os/prebuilts/gcc/linux-x86/arm/arm-eabi-4.6/arm-eabi/lib/ldscripts/armelf.x \
-Wl,-dynamic-linker,/system/bin/linker -Wl,--gc-sections -Wl,-z,nocopyreloc \
-Wl,--no-undefined -Wl,-rpath-link=/mnt/hgfs/Documents/thesis/android-wmon/core/os/../android-ndk-r8b-linux/platforms/android-14/arch-arm/usr/lib \
-L/mnt/hgfs/Documents/thesis/android-wmon/core/os/prebuilts/gcc/linux-x86/arm/arm-eabi-4.6/libexec/gcc/arm-eabi/4.6.x-google \
-L/mnt/hgfs/Documents/thesis/android-wmon/core/os/../android-ndk-r8b-linux/platforms/android-14/arch-arm/usr/lib \
-nostdlib /mnt/hgfs/Documents/thesis/android-wmon/core/os/../android-ndk-r8b-linux/platforms/android-14/arch-arm/usr/lib/crtend_android.o \
/mnt/hgfs/Documents/thesis/android-wmon/core/os/../android-ndk-r8b-linux/platforms/android-14/arch-arm/usr/lib/crtbegin_dynamic.o \
/mnt/hgfs/Documents/thesis/android-wmon/core/os/prebuilts/gcc/linux-x86/arm/arm-eabi-4.6/lib/gcc/arm-eabi/4.6.x-google/libgcc.a \
-lc -lliblto_plugin -lm
arm-eabi-gcc: fatal error: -fuse-linker-plugin, but liblto_plugin.so not found
编辑： strace 与编译一起运行，我看到读取共享库的访问失败：
access("/mnt/hgfs/Documents/thesis/android-wmon/core/os/prebuilts/gcc/linux-x86/arm/arm-eabi-4.6/bin/../libexec/gcc/arm-eabi/4.6.x-google/liblto_plugin.so", R_OK) = -1 ENOENT (No such file or directory)
access("/mnt/hgfs/Documents/thesis/android-wmon/core/os/prebuilts/gcc/linux-x86/arm/arm-eabi-4.6/bin/../libexec/gcc/liblto_plugin.so", R_OK) = -1 ENOENT (No such file or directory)
access("/mnt/hgfs/Documents/thesis/android-wmon/core/os/prebuilts/gcc/linux-x86/arm/arm-eabi-4.6/bin/../lib/gcc/arm-eabi/4.6.x-google/../../../../arm-eabi/bin/arm-eabi/4.6.x-google/liblto_plugin.so", R_OK) = -1 ENOENT (No such file or directory)
access("/mnt/hgfs/Documents/thesis/android-wmon/core/os/prebuilts/gcc/linux-x86/arm/arm-eabi-4.6/bin/../lib/gcc/arm-eabi/4.6.x-google/../../../../arm-eabi/bin/liblto_plugin.so", R_OK) = -1 ENOENT (No such file or directory)
但有趣的是，它尝试的第一条路径确实存在，但它是一个链接：
$ file /mnt/hgfs/Documents/thesis/android-wmon/core/os/prebuilts/gcc/linux-x86/arm/arm-eabi-4.6/bin/../libexec/gcc/arm-eabi/4.6.x-google/liblto_plugin.so
/mnt/hgfs/Documents/thesis/android-wmon/core/os/prebuilts/gcc/linux-x86/arm/arm-eabi-4.6/bin/../libexec/gcc/arm-eabi/4.6.x-google/liblto_plugin.so: symbolic link to `liblto_plugin.so.0.0.0'
该链接也有效：
$ ls -l /mnt/hgfs/Documents/thesis/android-wmon/core/os/prebuilts/gcc/linux-x86/arm/arm-eabi-4.6/bin/../libexec/gcc/arm-eabi/4.6.x-google/
total 70053
-rwxr-xr-x 1 501 dialout 47040814 Oct 3 14:29 cc1
-rwxr-xr-x 1 501 dialout 50903764 Oct 3 14:29 cc1plus
-rwxr-xr-x 1 501 dialout 423914 Oct 3 14:29 collect2
drwxr-xr-x 1 501 dialout 204 Oct 3 14:29 install-tools
-rwxr-xr-x 1 501 dialout 1090 Oct 3 14:29 libfunction_reordering_plugin.la
lrwxr-xr-x 1 501 dialout 38 Oct 3 14:29 libfunction_reordering_plugin.so -> libfunction_reordering_plugin.so.0.0.0
lrwxr-xr-x 1 501 dialout 38 Oct 3 14:29 libfunction_reordering_plugin.so.0 -> libfunction_reordering_plugin.so.0.0.0
-rwxr-xr-x 1 501 dialout 89427 Oct 3 14:29 libfunction_reordering_plugin.so.0.0.0
-rwxr-xr-x 1 501 dialout 994 Oct 3 14:29 liblto_plugin.la
lrwxr-xr-x 1 501 dialout 22 Oct 3 14:29 liblto_plugin.so -> liblto_plugin.so.0.0.0
lrwxr-xr-x 1 501 dialout 22 Oct 3 14:29 liblto_plugin.so.0 -> liblto_plugin.so.0.0.0
-rwxr-xr-x 1 501 dialout 238575 Oct 3 14:29 liblto_plugin.so.0.0.0
-rwxr-xr-x 1 501 dialout 44647203 Oct 3 14:29 lto1
-rwxr-xr-x 1 501 dialout 114284 Oct 3 14:29 lto-wrapper
另一个编辑：如果我进入包含共享库的目录并删除从 liblto_plugin.so 到 liblto_plugin.so.0.0.0 的链接，然后是“cp liblto_plugin.so.0.0.0 liblto_plugin.so”，那么它会正确链接并且我的程序编译。当这个文件是一个链接时，为什么它会被破坏？（对不起，这里使用“链接”来指代两个不同的东西）。