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ld忽略其他路径 我正在尝试编译一个使用GuROPI的C++程序。问题是,虽然ldconfig看到了库,但ld找不到它。我还尝试配置LD_LIBRARY_PATH变量,但没有成功 $ sudo ldconfig -v ... /opt/gurobi701/linux64/lib: libgurobi.so.7.0.1 -> libgurobi.so.7.0.1 libaes70.so -> libaes70.so libGurobiJni70.so -> libGurobiJni70.so ... $ echo $LD_LIBRARY_PATH :/opt/gurobi701/linux64/lib $ ld -lgurobi_c++ --verbose GNU ld (GNU Binutils for Ubuntu) 2.26.1 Émulations prises en charge : elf_x86_64 elf32_x86_64 elf_i386 elf_iamcu i386linux elf_l1om elf_k1om i386pep i386pe utilisation du script interne d'édition de liens : ================================================== /* Script for -z combreloc: combine and sort reloc sections */ /* Copyright (C) 2014-2015 Free Software Foundation, Inc. Copying and distribution of this script, with or without modification, are permitted in any medium without royalty provided the copyright notice and this notice are preserved. */ OUTPUT_FORMAT("elf64-x86-64", "elf64-x86-64", "elf64-x86-64") OUTPUT_ARCH(i386:x86-64) ENTRY(_start) SEARCH_DIR("=/usr/local/lib/x86_64-linux-gnu"); SEARCH_DIR("=/lib/x86_64-linux-gnu"); SEARCH_DIR("=/usr/lib/x86_64-linux-gnu"); SEARCH_DIR("=/usr/local/lib64"); SEARCH_DIR("=/lib64"); SEARCH_DIR("=/usr/lib64"); SEARCH_DIR("=/usr/local/lib"); SEARCH_DIR("=/lib"); SEARCH_DIR("=/usr/lib"); SEARCH_DIR("=/usr/x86_64-linux-gnu/lib64"); SEARCH_DIR("=/usr/x86_64-linux-gnu/lib"); SECTIONS { /* Read-only sections, merged into text segment: */ PROVIDE (__executable_start = SEGMENT_START("text-segment", 0x400000)); . = SEGMENT_START("text-segment", 0x400000) + SIZEOF_HEADERS; .interp : { *(.interp) } .note.gnu.build-id : { *(.note.gnu.build-id) } .hash : { *(.hash) } .gnu.hash : { *(.gnu.hash) } .dynsym : { *(.dynsym) } .dynstr : { *(.dynstr) } .gnu.version : { *(.gnu.version) } .gnu.version_d : { *(.gnu.version_d) } .gnu.version_r : { *(.gnu.version_r) } .rela.dyn : { *(.rela.init) *(.rela.text .rela.text.* .rela.gnu.linkonce.t.*) *(.rela.fini) *(.rela.rodata .rela.rodata.* .rela.gnu.linkonce.r.*) *(.rela.data .rela.data.* .rela.gnu.linkonce.d.*) *(.rela.tdata .rela.tdata.* .rela.gnu.linkonce.td.*) *(.rela.tbss .rela.tbss.* .rela.gnu.linkonce.tb.*) *(.rela.ctors) *(.rela.dtors) *(.rela.got) *(.rela.bss .rela.bss.* .rela.gnu.linkonce.b.*) *(.rela.ldata .rela.ldata.* .rela.gnu.linkonce.l.*) *(.rela.lbss .rela.lbss.* .rela.gnu.linkonce.lb.*) *(.rela.lrodata .rela.lrodata.* .rela.gnu.linkonce.lr.*) *(.rela.ifunc) } .rela.plt : { *(.rela.plt) PROVIDE_HIDDEN (__rela_iplt_start = .); *(.rela.iplt) PROVIDE_HIDDEN (__rela_iplt_end = .); } .init : { KEEP (*(SORT_NONE(.init))) } .plt : { *(.plt) *(.iplt) } .plt.got : { *(.plt.got) } .plt.bnd : { *(.plt.bnd) } .text : { *(.text.unlikely .text.*_unlikely .text.unlikely.*) *(.text.exit .text.exit.*) *(.text.startup .text.startup.*) *(.text.hot .text.hot.*) *(.text .stub .text.* .gnu.linkonce.t.*) /* .gnu.warning sections are handled specially by elf32.em. */ *(.gnu.warning) } .fini : { KEEP (*(SORT_NONE(.fini))) } PROVIDE (__etext = .); PROVIDE (_etext = .); PROVIDE (etext = .); .rodata : { *(.rodata .rodata.* .gnu.linkonce.r.*) } .rodata1 : { *(.rodata1) } .eh_frame_hdr : { *(.eh_frame_hdr) *(.eh_frame_entry .eh_frame_entry.*) } .eh_frame : ONLY_IF_RO { KEEP (*(.eh_frame)) *(.eh_frame.*) } .gcc_except_table : ONLY_IF_RO { *(.gcc_except_table .gcc_except_table.*) } .gnu_extab : ONLY_IF_RO { *(.gnu_extab*) } /* These sections are generated by the Sun/Oracle C++ compiler. */ .exception_ranges : ONLY_IF_RO { *(.exception_ranges .exception_ranges*) } /* Adjust the address for the data segment. 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ld忽略其他路径 我正在尝试编译一个使用GuROPI的C++程序。问题是,虽然ldconfig看到了库,但ld找不到它。我还尝试配置LD_LIBRARY_PATH变量,但没有成功 $ sudo ldconfig -v ... /opt/gurobi701/linux64/lib: libgurobi.so.7.0.1 -> libgurobi.so.7.0.1 libaes70.so -> libaes70.so libGurobiJni70.so -> libGurobiJni70.so ... $ echo $LD_LIBRARY_PATH :/opt/gurobi701/linux64/lib $ ld -lgurobi_c++ --verbose GNU ld (GNU Binutils for Ubuntu) 2.26.1 Émulations prises en charge : elf_x86_64 elf32_x86_64 elf_i386 elf_iamcu i386linux elf_l1om elf_k1om i386pep i386pe utilisation du script interne d'édition de liens : ================================================== /* Script for -z combreloc: combine and sort reloc sections */ /* Copyright (C) 2014-2015 Free Software Foundation, Inc. Copying and distribution of this script, with or without modification, are permitted in any medium without royalty provided the copyright notice and this notice are preserved. */ OUTPUT_FORMAT("elf64-x86-64", "elf64-x86-64", "elf64-x86-64") OUTPUT_ARCH(i386:x86-64) ENTRY(_start) SEARCH_DIR("=/usr/local/lib/x86_64-linux-gnu"); SEARCH_DIR("=/lib/x86_64-linux-gnu"); SEARCH_DIR("=/usr/lib/x86_64-linux-gnu"); SEARCH_DIR("=/usr/local/lib64"); SEARCH_DIR("=/lib64"); SEARCH_DIR("=/usr/lib64"); SEARCH_DIR("=/usr/local/lib"); SEARCH_DIR("=/lib"); SEARCH_DIR("=/usr/lib"); SEARCH_DIR("=/usr/x86_64-linux-gnu/lib64"); SEARCH_DIR("=/usr/x86_64-linux-gnu/lib"); SECTIONS { /* Read-only sections, merged into text segment: */ PROVIDE (__executable_start = SEGMENT_START("text-segment", 0x400000)); . = SEGMENT_START("text-segment", 0x400000) + SIZEOF_HEADERS; .interp : { *(.interp) } .note.gnu.build-id : { *(.note.gnu.build-id) } .hash : { *(.hash) } .gnu.hash : { *(.gnu.hash) } .dynsym : { *(.dynsym) } .dynstr : { *(.dynstr) } .gnu.version : { *(.gnu.version) } .gnu.version_d : { *(.gnu.version_d) } .gnu.version_r : { *(.gnu.version_r) } .rela.dyn : { *(.rela.init) *(.rela.text .rela.text.* .rela.gnu.linkonce.t.*) *(.rela.fini) *(.rela.rodata .rela.rodata.* .rela.gnu.linkonce.r.*) *(.rela.data .rela.data.* .rela.gnu.linkonce.d.*) *(.rela.tdata .rela.tdata.* .rela.gnu.linkonce.td.*) *(.rela.tbss .rela.tbss.* .rela.gnu.linkonce.tb.*) *(.rela.ctors) *(.rela.dtors) *(.rela.got) *(.rela.bss .rela.bss.* .rela.gnu.linkonce.b.*) *(.rela.ldata .rela.ldata.* .rela.gnu.linkonce.l.*) *(.rela.lbss .rela.lbss.* .rela.gnu.linkonce.lb.*) *(.rela.lrodata .rela.lrodata.* .rela.gnu.linkonce.lr.*) *(.rela.ifunc) } .rela.plt : { *(.rela.plt) PROVIDE_HIDDEN (__rela_iplt_start = .); *(.rela.iplt) PROVIDE_HIDDEN (__rela_iplt_end = .); } .init : { KEEP (*(SORT_NONE(.init))) } .plt : { *(.plt) *(.iplt) } .plt.got : { *(.plt.got) } .plt.bnd : { *(.plt.bnd) } .text : { *(.text.unlikely .text.*_unlikely .text.unlikely.*) *(.text.exit .text.exit.*) *(.text.startup .text.startup.*) *(.text.hot .text.hot.*) *(.text .stub .text.* .gnu.linkonce.t.*) /* .gnu.warning sections are handled specially by elf32.em. */ *(.gnu.warning) } .fini : { KEEP (*(SORT_NONE(.fini))) } PROVIDE (__etext = .); PROVIDE (_etext = .); PROVIDE (etext = .); .rodata : { *(.rodata .rodata.* .gnu.linkonce.r.*) } .rodata1 : { *(.rodata1) } .eh_frame_hdr : { *(.eh_frame_hdr) *(.eh_frame_entry .eh_frame_entry.*) } .eh_frame : ONLY_IF_RO { KEEP (*(.eh_frame)) *(.eh_frame.*) } .gcc_except_table : ONLY_IF_RO { *(.gcc_except_table .gcc_except_table.*) } .gnu_extab : ONLY_IF_RO { *(.gnu_extab*) } /* These sections are generated by the Sun/Oracle C++ compiler. */ .exception_ranges : ONLY_IF_RO { *(.exception_ranges .exception_ranges*) } /* Adjust the address for the data segment. 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ld忽略其他路径 我正在尝试编译一个使用GuROPI的C++程序。问题是,虽然ldconfig看到了库,但ld找不到它。我还尝试配置LD_LIBRARY_PATH变量,但没有成功 $ sudo ldconfig -v ... /opt/gurobi701/linux64/lib: libgurobi.so.7.0.1 -> libgurobi.so.7.0.1 libaes70.so -> libaes70.so libGurobiJni70.so -> libGurobiJni70.so ... $ echo $LD_LIBRARY_PATH :/opt/gurobi701/linux64/lib $ ld -lgurobi_c++ --verbose GNU ld (GNU Binutils for Ubuntu) 2.26.1 Émulations prises en charge : elf_x86_64 elf32_x86_64 elf_i386 elf_iamcu i386linux elf_l1om elf_k1om i386pep i386pe utilisation du script interne d'édition de liens : ================================================== /* Script for -z combreloc: combine and sort reloc sections */ /* Copyright (C) 2014-2015 Free Software Foundation, Inc. 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有什么想法吗?

是动态加载程序(
ld.so
ld-linux.so
在linux上,
dyld
在OS X上)查找库的路径。当您在非标准路径中运行依赖于库的程序时,需要使用此选项

它不一定会影响链接器查找库的位置。使用
-L
标志指定
ld
的搜索路径:

ld -L/opt/gurobi701/linux64/lib -lgurobi_c++ ...

有没有办法不将-L选项添加到ld命令中?我希望编译能够工作,即使Gurobi没有安装在/opt/gurobi701/linux64/lib中,只要库的路径已经在系统级定义。如果Gurobi使用
pkg-config
,您可以使用类似
$(pkg-config-libs-Gurobi)
的东西来代替链接器标志。不过,我不确定它是否会。否则,您需要以某种方式手动查找路径(可能有一些二进制文件,您可以
which
,或者使用
find
?)实际上,我使用Bazel进行编译,我希望代码是多平台的。因此,我不希望使用pkg config或任何特定于unix的命令。还有一些附加注释:使用
gcc
编译时,可以使用变量
LIBRARY\u PATH
添加目录,链接器将在链接步骤中搜索库。不幸的是,当直接调用
ld
时,没有考虑此变量