Missing static library -liconv in libarchive.pc

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Missing static library -liconv in libarchive.pc

Willy Goiffon
>Synopsis: libarchive's libarchive.pc lacks -liconv
>Category: ports
>Environment:
        System      : OpenBSD 6.4
        Details     : OpenBSD 6.4 (GENERIC.MP) #3: Thu Dec 20 19:19:32 CET 2018
                         [hidden email]:/usr/src/sys/arch/amd64/compile/GENERIC.MP

        Architecture: OpenBSD.amd64
        Machine     : amd64
>Description:
        When compiling a program and linking statically against libarchive, using pkg-config(1) will
        not work because -liconv is not included, the linker giving the following output:

$ cc ar.c -o ar -static $(pkg-config --cflags --libs --static libarchive)
/usr/local/lib/libarchive.a(archive_acl.o): In function `archive_acl_to_text_w':
archive_acl.c:(.text+0x8f1): warning: wcscpy() is almost always misused, please use wcslcpy()
/usr/local/lib/libarchive.a(archive_acl.o): In function `archive_acl_to_text_l':
archive_acl.c:(.text+0x1a12): warning: strcpy() is almost always misused, please use strlcpy()
/usr/local/lib/libarchive.a(archive_check_magic.o): In function `__archive_check_magic':
archive_check_magic.c:(.text+0x1d4): warning: strcat() is almost always misused, please use strlcat()
/usr/local/lib/libarchive.a(archive_string.o): In function `archive_string_conversion_to_charset':
archive_string.c:(.text+0xbd7): undefined reference to `locale_charset'
archive_string.c:(.text+0xbfc): undefined reference to `locale_charset'
/usr/local/lib/libarchive.a(archive_string.o): In function `get_sconv_object':
archive_string.c:(.text+0xe96): undefined reference to `libiconv_open'
archive_string.c:(.text+0xee7): undefined reference to `libiconv_open'
archive_string.c:(.text+0xf8c): undefined reference to `libiconv_close'
archive_string.c:(.text+0xf9b): undefined reference to `libiconv_close'
archive_string.c:(.text+0xfd9): undefined reference to `libiconv_open'
/usr/local/lib/libarchive.a(archive_string.o): In function `archive_string_conversion_from_charset':
archive_string.c:(.text+0x1027): undefined reference to `locale_charset'
archive_string.c:(.text+0x104c): undefined reference to `locale_charset'
/usr/local/lib/libarchive.a(archive_string.o): In function `archive_string_conversion_free':
archive_string.c:(.text+0x1139): undefined reference to `libiconv_close'
archive_string.c:(.text+0x1148): undefined reference to `libiconv_close'
/usr/local/lib/libarchive.a(archive_string.o): In function `archive_mstring_get_utf8':
archive_string.c:(.text+0x18e7): undefined reference to `locale_charset'
archive_string.c:(.text+0x1912): undefined reference to `locale_charset'
archive_string.c:(.text+0x19a6): undefined reference to `libiconv_close'
archive_string.c:(.text+0x19b5): undefined reference to `libiconv_close'
/usr/local/lib/libarchive.a(archive_string.o): In function `archive_mstring_update_utf8':
archive_string.c:(.text+0x21af): undefined reference to `locale_charset'
archive_string.c:(.text+0x21ea): undefined reference to `locale_charset'
archive_string.c:(.text+0x228b): undefined reference to `libiconv_close'
archive_string.c:(.text+0x229a): undefined reference to `libiconv_close'
/usr/local/lib/libarchive.a(archive_string.o): In function `iconv_strncat_in_locale':
archive_string.c:(.text+0x2a24): undefined reference to `libiconv'
cc: error: linker command failed with exit code 1 (use -v to see invocation)

>How-To-Repeat:
        First install libarchive with pkg_add, and create the simple C program below:

        $ doas pkg_add libarchive
        $ cat > ar.c
        #include <archive.h>
        int main() {
                struct archive *a;
                a = archive_read_new();
                archive_read_free(a);
                return 0;
        }

        Then compile this code statically using pkg-config, to see the exact error:

        $ cc -static ar.c $(pkg-config --cflags --libs --static libarchive)
        /usr/local/lib/libarchive.a(archive_acl.o): In function `archive_acl_to_text_w':
        archive_acl.c:(.text+0x8f1): warning: wcscpy() is almost always misused, please use wcslcpy()
        /usr/local/lib/libarchive.a(archive_acl.o): In function `archive_acl_to_text_l':
        archive_acl.c:(.text+0x1a12): warning: strcpy() is almost always misused, please use strlcpy()
        /usr/local/lib/libarchive.a(archive_check_magic.o): In function `__archive_check_magic':
        archive_check_magic.c:(.text+0x1d4): warning: strcat() is almost always misused, please use strlcat()
        /usr/local/lib/libarchive.a(archive_string.o): In function `archive_string_conversion_to_charset':
        archive_string.c:(.text+0xbd7): undefined reference to `locale_charset'
        archive_string.c:(.text+0xbfc): undefined reference to `locale_charset'
        /usr/local/lib/libarchive.a(archive_string.o): In function `get_sconv_object':
        archive_string.c:(.text+0xe96): undefined reference to `libiconv_open'
        archive_string.c:(.text+0xee7): undefined reference to `libiconv_open'
        archive_string.c:(.text+0xf8c): undefined reference to `libiconv_close'
        archive_string.c:(.text+0xf9b): undefined reference to `libiconv_close'
        archive_string.c:(.text+0xfd9): undefined reference to `libiconv_open'
        /usr/local/lib/libarchive.a(archive_string.o): In function `archive_string_conversion_from_charset':
        archive_string.c:(.text+0x1027): undefined reference to `locale_charset'
        archive_string.c:(.text+0x104c): undefined reference to `locale_charset'
        /usr/local/lib/libarchive.a(archive_string.o): In function `archive_string_conversion_free':
        archive_string.c:(.text+0x1139): undefined reference to `libiconv_close'
        archive_string.c:(.text+0x1148): undefined reference to `libiconv_close'
        /usr/local/lib/libarchive.a(archive_string.o): In function `archive_mstring_get_utf8':
        archive_string.c:(.text+0x18e7): undefined reference to `locale_charset'
        archive_string.c:(.text+0x1912): undefined reference to `locale_charset'
        archive_string.c:(.text+0x19a6): undefined reference to `libiconv_close'
        archive_string.c:(.text+0x19b5): undefined reference to `libiconv_close'
        /usr/local/lib/libarchive.a(archive_string.o): In function `archive_mstring_update_utf8':
        archive_string.c:(.text+0x21af): undefined reference to `locale_charset'
        archive_string.c:(.text+0x21ea): undefined reference to `locale_charset'
        archive_string.c:(.text+0x228b): undefined reference to `libiconv_close'
        archive_string.c:(.text+0x229a): undefined reference to `libiconv_close'
        /usr/local/lib/libarchive.a(archive_string.o): In function `iconv_strncat_in_locale':
        archive_string.c:(.text+0x2a24): undefined reference to `libiconv'
        cc: error: linker command failed with exit code 1 (use -v to see invocation)


>Fix:
        Adding -liconv to the compilation flags fixes the issue:

        $ cc -static ar.c $(pkg-config --cflags --libs --static libarchive) -liconv
        /usr/local/lib/libarchive.a(archive_acl.o): In function `archive_acl_to_text_w':
        archive_acl.c:(.text+0x8f1): warning: wcscpy() is almost always misused, please use wcslcpy()
        /usr/local/lib/libarchive.a(archive_acl.o): In function `archive_acl_to_text_l':
        archive_acl.c:(.text+0x1a12): warning: strcpy() is almost always misused, please use strlcpy()
        /usr/local/lib/libarchive.a(archive_check_magic.o): In function `__archive_check_magic':
        archive_check_magic.c:(.text+0x1d4): warning: strcat() is almost always misused, please use strlcat()

        However, -liconv is missing from Libs.private in /usr/local/lib/pkgconfig/libarchive.pc.
        Adding it there fixes the issue



dmesg:
OpenBSD 6.4 (GENERIC.MP) #3: Thu Dec 20 19:19:32 CET 2018
    [hidden email]:/usr/src/sys/arch/amd64/compile/GENERIC.MP
real mem = 8558833664 (8162MB)
avail mem = 8290172928 (7906MB)
mpath0 at root
scsibus0 at mpath0: 256 targets
mainbus0 at root
bios0 at mainbus0: SMBIOS rev. 2.8 @ 0x7f4cd000 (39 entries)
bios0: vendor American Megatrends Inc. version "1.0b" date 08/11/2014
bios0: Supermicro A1SA2-2750F
acpi0 at bios0: rev 2
acpi0: sleep states S0 S5
acpi0: tables DSDT FACP FPDT SPMI MCFG WDAT UEFI APIC BDAT HPET SSDT HEST BERT ERST EINJ
acpi0: wakeup devices PEX1(S0) PEX2(S0) PEX3(S0) PEX4(S0) EHC1(S0)
acpitimer0 at acpi0: 3579545 Hz, 24 bits
acpimcfg0 at acpi0
acpimcfg0: addr 0xe0000000, bus 0-255
acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
cpu0 at mainbus0: apid 0 (boot processor)
cpu0: Intel(R) Atom(TM) CPU C2750 @ 2.40GHz, 2400.45 MHz, 06-4d-08
cpu0: FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,SSE4.1,SSE4.2,MOVBE,POPCNT,DEADLINE,AES,RDRAND,NXE,RDTSCP,LONG,LAHF,3DNOWP,PERF,ITSC,SMEP,ERMS,SENSOR,ARAT,MELTDOWN
cpu0: 1MB 64b/line 16-way L2 cache
cpu0: smt 0, core 0, package 0
mtrr: Pentium Pro MTRR support, 8 var ranges, 88 fixed ranges
cpu0: apic clock running at 100MHz
cpu0: mwait min=64, max=64, C-substates=0.2.0.0.0.0.3, IBE
cpu1 at mainbus0: apid 2 (application processor)
cpu1: Intel(R) Atom(TM) CPU C2750 @ 2.40GHz, 2400.01 MHz, 06-4d-08
cpu1: FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,SSE4.1,SSE4.2,MOVBE,POPCNT,DEADLINE,AES,RDRAND,NXE,RDTSCP,LONG,LAHF,3DNOWP,PERF,ITSC,SMEP,ERMS,SENSOR,ARAT,MELTDOWN
cpu1: 1MB 64b/line 16-way L2 cache
cpu1: smt 0, core 1, package 0
cpu2 at mainbus0: apid 4 (application processor)
cpu2: Intel(R) Atom(TM) CPU C2750 @ 2.40GHz, 2400.01 MHz, 06-4d-08
cpu2: FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,SSE4.1,SSE4.2,MOVBE,POPCNT,DEADLINE,AES,RDRAND,NXE,RDTSCP,LONG,LAHF,3DNOWP,PERF,ITSC,SMEP,ERMS,SENSOR,ARAT,MELTDOWN
cpu2: 1MB 64b/line 16-way L2 cache
cpu2: smt 0, core 2, package 0
cpu3 at mainbus0: apid 6 (application processor)
cpu3: Intel(R) Atom(TM) CPU C2750 @ 2.40GHz, 2400.01 MHz, 06-4d-08
cpu3: FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,SSE4.1,SSE4.2,MOVBE,POPCNT,DEADLINE,AES,RDRAND,NXE,RDTSCP,LONG,LAHF,3DNOWP,PERF,ITSC,SMEP,ERMS,SENSOR,ARAT,MELTDOWN
cpu3: 1MB 64b/line 16-way L2 cache
cpu3: smt 0, core 3, package 0
cpu4 at mainbus0: apid 8 (application processor)
cpu4: Intel(R) Atom(TM) CPU C2750 @ 2.40GHz, 2400.01 MHz, 06-4d-08
cpu4: FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,SSE4.1,SSE4.2,MOVBE,POPCNT,DEADLINE,AES,RDRAND,NXE,RDTSCP,LONG,LAHF,3DNOWP,PERF,ITSC,SMEP,ERMS,SENSOR,ARAT,MELTDOWN
cpu4: 1MB 64b/line 16-way L2 cache
cpu4: smt 0, core 4, package 0
cpu5 at mainbus0: apid 10 (application processor)
cpu5: Intel(R) Atom(TM) CPU C2750 @ 2.40GHz, 2400.01 MHz, 06-4d-08
cpu5: FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,SSE4.1,SSE4.2,MOVBE,POPCNT,DEADLINE,AES,RDRAND,NXE,RDTSCP,LONG,LAHF,3DNOWP,PERF,ITSC,SMEP,ERMS,SENSOR,ARAT,MELTDOWN
cpu5: 1MB 64b/line 16-way L2 cache
cpu5: smt 0, core 5, package 0
cpu6 at mainbus0: apid 12 (application processor)
cpu6: Intel(R) Atom(TM) CPU C2750 @ 2.40GHz, 2400.01 MHz, 06-4d-08
cpu6: FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,SSE4.1,SSE4.2,MOVBE,POPCNT,DEADLINE,AES,RDRAND,NXE,RDTSCP,LONG,LAHF,3DNOWP,PERF,ITSC,SMEP,ERMS,SENSOR,ARAT,MELTDOWN
cpu6: 1MB 64b/line 16-way L2 cache
cpu6: smt 0, core 6, package 0
cpu7 at mainbus0: apid 14 (application processor)
cpu7: Intel(R) Atom(TM) CPU C2750 @ 2.40GHz, 2400.01 MHz, 06-4d-08
cpu7: FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,SSE4.1,SSE4.2,MOVBE,POPCNT,DEADLINE,AES,RDRAND,NXE,RDTSCP,LONG,LAHF,3DNOWP,PERF,ITSC,SMEP,ERMS,SENSOR,ARAT,MELTDOWN
cpu7: 1MB 64b/line 16-way L2 cache
cpu7: smt 0, core 7, package 0
ioapic0 at mainbus0: apid 2 pa 0xfec00000, version 20, 24 pins
acpihpet0 at acpi0: 14318179 Hz
acpiprt0 at acpi0: bus 0 (PCI0)
acpiprt1 at acpi0: bus 1 (PEX1)
acpiprt2 at acpi0: bus 2 (BR18)
acpiprt3 at acpi0: bus 3 (PEX2)
acpiprt4 at acpi0: bus -1 (BR1A)
acpiprt5 at acpi0: bus 4 (PEX3)
acpiprt6 at acpi0: bus -1 (PEX4)
acpicpu0 at acpi0: C2(350@41 mwait.3@0x51), C1(1000@1 mwait.1), PSS
acpicpu1 at acpi0: C2(350@41 mwait.3@0x51), C1(1000@1 mwait.1), PSS
acpicpu2 at acpi0: C2(350@41 mwait.3@0x51), C1(1000@1 mwait.1), PSS
acpicpu3 at acpi0: C2(350@41 mwait.3@0x51), C1(1000@1 mwait.1), PSS
acpicpu4 at acpi0: C2(350@41 mwait.3@0x51), C1(1000@1 mwait.1), PSS
acpicpu5 at acpi0: C2(350@41 mwait.3@0x51), C1(1000@1 mwait.1), PSS
acpicpu6 at acpi0: C2(350@41 mwait.3@0x51), C1(1000@1 mwait.1), PSS
acpicpu7 at acpi0: C2(350@41 mwait.3@0x51), C1(1000@1 mwait.1), PSS
"PNP0003" at acpi0 not configured
acpicmos0 at acpi0
"PNP0C33" at acpi0 not configured
ipmi at mainbus0 not configured
cpu0: Enhanced SpeedStep 2400 MHz: speeds: 2401, 2400, 2300, 2200, 2100, 2000, 1900, 1800, 1700, 1600, 1500, 1400, 1300, 1200 MHz
pci0 at mainbus0 bus 0
pchb0 at pci0 dev 0 function 0 vendor "Intel", unknown product 0x1f01 rev 0x02
ppb0 at pci0 dev 1 function 0 "Intel Atom C2000 PCIE" rev 0x02: msi
pci1 at ppb0 bus 1
ppb1 at pci1 dev 0 function 0 "ASPEED Technology AST1150 PCI" rev 0x03
pci2 at ppb1 bus 2
vga1 at pci2 dev 0 function 0 "ASPEED Technology AST2000" rev 0x30
wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation)
wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
ppb2 at pci0 dev 2 function 0 "Intel Atom C2000 PCIE" rev 0x02: msi
pci3 at ppb2 bus 3
ppb3 at pci0 dev 3 function 0 "Intel Atom C2000 PCIE" rev 0x02: msi
pci4 at ppb3 bus 4
pchb1 at pci0 dev 14 function 0 "Intel Atom C2000 RAS" rev 0x02
"Intel Atom C2000 RCEC" rev 0x02 at pci0 dev 15 function 0 not configured
"Intel Atom C2000 SMBus" rev 0x02 at pci0 dev 19 function 0 not configured
em0 at pci0 dev 20 function 0 "Intel I354 SGMII" rev 0x03: msi, address 0c:c4:7a:08:3a:e8
em1 at pci0 dev 20 function 1 "Intel I354 SGMII" rev 0x03: msi, address 0c:c4:7a:08:3a:e9
ehci0 at pci0 dev 22 function 0 "Intel Atom C2000 USB" rev 0x02: apic 2 int 23
usb0 at ehci0: USB revision 2.0
uhub0 at usb0 configuration 1 interface 0 "Intel EHCI root hub" rev 2.00/1.00 addr 1
ahci0 at pci0 dev 24 function 0 "Intel Atom C2000 AHCI" rev 0x02: msi, AHCI 1.3
ahci0: port 0: 6.0Gb/s
scsibus1 at ahci0: 32 targets
sd0 at scsibus1 targ 0 lun 0: <ATA, HGST HTS721010A9, JB0O> SCSI3 0/direct fixed naa.5000cca6acd058a8
sd0: 953869MB, 512 bytes/sector, 1953525168 sectors
pcib0 at pci0 dev 31 function 0 "Intel Atom C2000 PCU" rev 0x02
ichiic0 at pci0 dev 31 function 3 "Intel Atom C2000 PCU SMBus" rev 0x02: apic 2 int 18
iic0 at ichiic0
sdtemp0 at iic0 addr 0x18: stts2002
sdtemp1 at iic0 addr 0x1a: stts2002
iic0: addr 0x2e 00=3f words 00=3f3f 01=0000 02=0000 03=0000 04=0000 05=0000 06=0000 07=0000
spdmem0 at iic0 addr 0x50: 4GB DDR3 SDRAM ECC PC3-12800 with thermal sensor
spdmem1 at iic0 addr 0x52: 4GB DDR3 SDRAM ECC PC3-12800 with thermal sensor
isa0 at pcib0
isadma0 at isa0
pckbc0 at isa0 port 0x60/5 irq 1 irq 12
pckbd0 at pckbc0 (kbd slot)
wskbd0 at pckbd0: console keyboard, using wsdisplay0
pms0 at pckbc0 (aux slot)
wsmouse0 at pms0 mux 0
pcppi0 at isa0 port 0x61
spkr0 at pcppi0
vmm0 at mainbus0: VMX/EPT (using slow L1TF mitigation)
uhub1 at uhub0 port 1 configuration 1 interface 0 "Intel product 0x07db" rev 2.00/0.02 addr 2
uhub2 at uhub1 port 3 configuration 1 interface 0 "ATEN International product 0x7000" rev 2.00/0.00 addr 3
uhidev0 at uhub2 port 1 configuration 1 interface 0 "ATEN International product 0x2419" rev 1.10/1.00 addr 4
uhidev0: iclass 3/1
ukbd0 at uhidev0: 8 variable keys, 6 key codes
wskbd1 at ukbd0 mux 1
wskbd1: connecting to wsdisplay0
uhidev1 at uhub2 port 1 configuration 1 interface 1 "ATEN International product 0x2419" rev 1.10/1.00 addr 4
uhidev1: iclass 3/1
ums0 at uhidev1: 3 buttons, Z dir
wsmouse1 at ums0 mux 0
vscsi0 at root
scsibus2 at vscsi0: 256 targets
softraid0 at root
scsibus3 at softraid0: 256 targets
root on sd0a (7d349f3a98fddd8e.a) swap on sd0b dump on sd0b

usbdevs:
Controller /dev/usb0:
addr 01: 8086:0000 Intel, EHCI root hub
         high speed, self powered, config 1, rev 1.00
         driver: uhub0
addr 02: 8087:07db Intel, product 0x07db
         high speed, self powered, config 1, rev 0.02
         driver: uhub1
addr 03: 0557:7000 ATEN International, product 0x7000
         high speed, self powered, config 1, rev 0.00
         driver: uhub2
addr 04: 0557:2419 ATEN International, product 0x2419
         low speed, power 160 mA, config 1, rev 1.00
         driver: uhidev0
         driver: uhidev1

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Re: Missing static library -liconv in libarchive.pc

Stuart Henderson
On 2019/04/11 14:07, Willy Goiffon wrote:

> >Synopsis: libarchive's libarchive.pc lacks -liconv
> >Category: ports
> >Environment:
> System      : OpenBSD 6.4
> Details     : OpenBSD 6.4 (GENERIC.MP) #3: Thu Dec 20 19:19:32 CET 2018
> [hidden email]:/usr/src/sys/arch/amd64/compile/GENERIC.MP
>
> Architecture: OpenBSD.amd64
> Machine     : amd64
> >Description:
> When compiling a program and linking statically against libarchive, using pkg-config(1) will
> not work because -liconv is not included, the linker giving the following output:

This isn't OpenBSD-specific. Can you open an issue upstream (at
https://github.com/libarchive/libarchive) and see how they want to
approach it?