libselinux – undefined reference to pcre_version

Emerging the “sys-libs/libselinux-2.9-r1” failed with this link errors of undefined references

/usr/lib/gcc/x86_64-pc-linux-gnu/8.3.0/../../../../x86_64-pc-linux-gnu/bin/ld: regex.lo: in function `regex_version':
regex.c:(.text+0x30): undefined reference to `pcre_version'
/usr/lib/gcc/x86_64-pc-linux-gnu/8.3.0/../../../../x86_64-pc-linux-gnu/bin/ld: regex.lo: in function `regex_writef':
regex.c:(.text+0x95): undefined reference to `pcre_fullinfo'
/usr/lib/gcc/x86_64-pc-linux-gnu/8.3.0/../../../../x86_64-pc-linux-gnu/bin/ld: regex.c:(.text+0xf6): undefined reference to `pcre_fullinfo'
/usr/lib/gcc/x86_64-pc-linux-gnu/8.3.0/../../../../x86_64-pc-linux-gnu/bin/ld: regex.lo: in function `regex_data_free':
regex.c:(.text+0x1eb): undefined reference to `pcre_free'
/usr/lib/gcc/x86_64-pc-linux-gnu/8.3.0/../../../../x86_64-pc-linux-gnu/bin/ld: regex.c:(.text+0x200): undefined reference to `pcre_free_study'
/usr/lib/gcc/x86_64-pc-linux-gnu/8.3.0/../../../../x86_64-pc-linux-gnu/bin/ld: regex.lo: in function `regex_prepare_data':
regex.c:(.text+0x26d): undefined reference to `pcre_compile'
/usr/lib/gcc/x86_64-pc-linux-gnu/8.3.0/../../../../x86_64-pc-linux-gnu/bin/ld: regex.c:(.text+0x28f): undefined reference to `pcre_study'
/usr/lib/gcc/x86_64-pc-linux-gnu/8.3.0/../../../../x86_64-pc-linux-gnu/bin/ld: regex.lo: in function `regex_load_mmap':
regex.c:(.text+0x385): undefined reference to `pcre_fullinfo'
/usr/lib/gcc/x86_64-pc-linux-gnu/8.3.0/../../../../x86_64-pc-linux-gnu/bin/ld: regex.c:(.text+0x3ed): undefined reference to `pcre_fullinfo'
/usr/lib/gcc/x86_64-pc-linux-gnu/8.3.0/../../../../x86_64-pc-linux-gnu/bin/ld: regex.lo: in function `regex_match':
regex.c:(.text+0x494): undefined reference to `pcre_exec'
/usr/lib/gcc/x86_64-pc-linux-gnu/8.3.0/../../../../x86_64-pc-linux-gnu/bin/ld: regex.lo: in function `regex_cmp':
regex.c:(.text+0x502): undefined reference to `pcre_fullinfo'
/usr/lib/gcc/x86_64-pc-linux-gnu/8.3.0/../../../../x86_64-pc-linux-gnu/bin/ld: regex.c:(.text+0x51a): undefined reference to `pcre_fullinfo'
collect2: error: ld returned 1 exit status
make[1]: *** [Makefile:148: libselinux.so.1] Error 1
make[1]: *** Waiting for unfinished jobs....
make[1]: Leaving directory '/var/tmp/portage/sys-libs/libselinux-2.9-r1/work/libselinux-2.9-abi_x86_32.x86/src'
make: *** [Makefile:44: all] Error 1
 * ERROR: sys-libs/libselinux-2.9-r1::gentoo failed (compile phase):
 *   emake failed
 *
 * If you need support, post the output of `emerge --info '=sys-libs/libselinux-2.9-r1::gentoo'`,
 * the complete build log and the output of `emerge -pqv '=sys-libs/libselinux-2.9-r1::gentoo'`.
 * The complete build log is located at '/var/tmp/portage/sys-libs/libselinux-2.9-r1/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/sys-libs/libselinux-2.9-r1/temp/environment'.
 * Working directory: '/var/tmp/portage/sys-libs/libselinux-2.9-r1/work/libselinux-2.9-abi_x86_32.x86'
 * S: '/var/tmp/portage/sys-libs/libselinux-2.9-r1/work/libselinux-2.9'

>>> Failed to emerge sys-libs/libselinux-2.9-r1, Log file:

>>>  '/var/tmp/portage/sys-libs/libselinux-2.9-r1/temp/build.log'

 * Messages for package sys-libs/libselinux-2.9-r1:

 * ERROR: sys-libs/libselinux-2.9-r1::gentoo failed (compile phase):
 *   emake failed
 *
 * If you need support, post the output of `emerge --info '=sys-libs/libselinux-2.9-r1::gentoo'`,
 * the complete build log and the output of `emerge -pqv '=sys-libs/libselinux-2.9-r1::gentoo'`.
 * The complete build log is located at '/var/tmp/portage/sys-libs/libselinux-2.9-r1/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/sys-libs/libselinux-2.9-r1/temp/environment'.
 * Working directory: '/var/tmp/portage/sys-libs/libselinux-2.9-r1/work/libselinux-2.9-abi_x86_32.x86'
 * S: '/var/tmp/portage/sys-libs/libselinux-2.9-r1/work/libselinux-2.9'

The solution was to rebuild the dev-libs/libpcre and dev-libs/libpcre2 libraries.

emerge -va dev-libs/libpcre dev-libs/libpcre2

These are the packages that would be merged, in order:

Calculating dependencies... done!
[ebuild     U  ] dev-libs/libpcre-8.43:3::gentoo [8.42:3::gentoo] USE="bzip2 cxx jit pcre16 readline recursion-limit (split-usr%*) (static-libs) (unicode) zlib -libedit -pcre32" ABI_X86="32 (64) (-x32)" 1540 KiB
[ebuild     U  ] dev-libs/libpcre2-10.34::gentoo [10.32::gentoo] USE="bzip2 jit pcre16 pcre32* readline recursion-limit (split-usr%*) unicode zlib -libedit -static-libs" ABI_X86="32 (64) (-x32)" 1676 KiB

Total: 2 packages (2 upgrades), Size of downloads: 3216 KiB

if you encounter the error above even you are not using Gentoo probably the problem is your libpcre/libpcre2 library and try to rebuild it or include the proper path to the library and its headers.

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