$ makepkg -s
==> Making package: cower 3.0.8-1 (Fri Oct 14 16:07:59 PDT 2011)
==> Checking runtime dependencies...
==> Checking buildtime dependencies...
==> Retrieving Sources...
  -> Found cower-3.0.8.tar.gz
==> Validating source files with md5sums...
    cower-3.0.8.tar.gz ... Passed
==> Extracting Sources...
  -> Extracting cower-3.0.8.tar.gz with bsdtar
==> Removing existing pkg/ directory...
==> Starting build()...
cc -std=c99 -g -pedantic -Wall -Wextra -Werror -pthread -march=x86-64 -mtune=generic -O2 -pipe -fstack-protector --param=ssp-buffer-size=4 -D_FORTIFY_SOURCE=2 -DCOWER_VERSION=\"3.0.8\"   -c -o cower.o cower.c
cower.c:257:1: error: unknown type name ‘alpm_handle_t’
cower.c:258:32: error: unknown type name ‘alpm_pkg_t’
cower.c:336:1: error: unknown type name ‘alpm_handle_t’
cower.c:337:1: error: unknown type name ‘alpm_db_t’
cower.c:364:1: error: unknown type name ‘alpm_handle_t’
cower.c: In function ‘alpm_init’:
cower.c:369:7: error: ISO C forbids forward references to ‘enum’ types [-Werror=edantic]
cower.c:369:21: error: storage size of ‘err’ isn’t known
cower.c:372:2: error: too many arguments to function ‘alpm_initialize’
/usr/include/alpm.h:65:5: note: declared here
cower.c:372:11: error: assignment makes pointer from integer without a cast [-Werror]
cower.c:401:7: error: ‘ALPM_SIG_DATABASE’ undeclared (first use in this function)
cower.c:401:7: note: each undeclared identifier is reported only once for each function it appears in
cower.c:401:27: error: ‘ALPM_SIG_DATABASE_OPTIONAL’ undeclared (first use in this function)
cower.c:401:7: error: passing argument 1 of ‘alpm_db_register_sync’ from incompatible pointer type [-Werror]
/usr/include/alpm.h:231:9: note: expected ‘const char *’ but argument is of type ‘int *’
cower.c:401:7: error: too many arguments to function ‘alpm_db_register_sync’
/usr/include/alpm.h:231:9: note: declared here
cower.c:420:2: error: too many arguments to function ‘alpm_option_get_localdb’
/usr/include/alpm.h:218:9: note: declared here
cower.c:420:11: error: assignment from incompatible pointer type [-Werror]
cower.c:369:21: error: unused variable ‘err’ [-Werror=unused-variable]
cower.c: In function ‘alpm_find_foreign_pkgs’:
cower.c:433:2: error: passing argument 1 of ‘alpm_db_get_pkgcache’ from incompatible pointer type [-Werror]
/usr/include/alpm.h:276:14: note: expected ‘struct pmdb_t *’ but argument is of type ‘int *’
cower.c:434:3: error: unknown type name ‘alpm_pkg_t’
cower.c:436:3: error: implicit declaration of function ‘alpm_pkg_is_foreign’ [-Werror=implicit-function-declaration]
cower.c:437:4: error: passing argument 1 of ‘alpm_pkg_get_name’ from incompatible pointer type [-Werror]
/usr/include/alpm.h:365:13: note: expected ‘struct pmpkg_t *’ but argument is of type ‘int *’
cower.c:437:4: error: passing argument 1 of ‘alpm_pkg_get_name’ from incompatible pointer type [-Werror]
/usr/include/alpm.h:365:13: note: expected ‘struct pmpkg_t *’ but argument is of type ‘int *’
cower.c:437:4: error: passing argument 1 of ‘alpm_pkg_get_name’ from incompatible pointer type [-Werror]
/usr/include/alpm.h:365:13: note: expected ‘struct pmpkg_t *’ but argument is of type ‘int *’
cower.c:437:4: error: passing argument 1 of ‘alpm_pkg_get_name’ from incompatible pointer type [-Werror]
/usr/include/alpm.h:365:13: note: expected ‘struct pmpkg_t *’ but argument is of type ‘int *’
cower.c:437:4: error: passing argument 1 of ‘alpm_pkg_get_name’ from incompatible pointer type [-Werror]
/usr/include/alpm.h:365:13: note: expected ‘struct pmpkg_t *’ but argument is of type ‘int *’
cower.c:437:4: error: passing argument 1 of ‘alpm_pkg_get_name’ from incompatible pointer type [-Werror]
/usr/include/alpm.h:365:13: note: expected ‘struct pmpkg_t *’ but argument is of type ‘int *’
cower.c:437:4: error: passing argument 1 of ‘alpm_pkg_get_name’ from incompatible pointer type [-Werror]
/usr/include/alpm.h:365:13: note: expected ‘struct pmpkg_t *’ but argument is of type ‘int *’
cower.c: At top level:
cower.c:444:25: error: unknown type name ‘alpm_pkg_t’
cower.c: In function ‘alpm_provides_pkg’:
cower.c:463:2: error: unknown type name ‘alpm_db_t’
cower.c:465:2: error: too many arguments to function ‘alpm_option_get_syncdbs’
/usr/include/alpm.h:225:14: note: declared here
cower.c:467:3: error: passing argument 1 of ‘alpm_db_get_pkgcache’ from incompatible pointer type [-Werror]
/usr/include/alpm.h:276:14: note: expected ‘struct pmdb_t *’ but argument is of type ‘int *’
cower.c:468:4: error: passing argument 1 of ‘alpm_db_get_name’ from incompatible pointer type [-Werror]
/usr/include/alpm.h:248:13: note: expected ‘const struct pmdb_t *’ but argument is of type ‘int *’
cower.c: In function ‘print_pkg_info’:
cower.c:1590:2: error: unknown type name ‘alpm_pkg_t’
cower.c:1594:2: error: passing argument 1 of ‘alpm_db_get_pkg’ from incompatible pointer type [-Werror]
/usr/include/alpm.h:270:10: note: expected ‘struct pmdb_t *’ but argument is of type ‘int *’
cower.c:1594:11: error: assignment from incompatible pointer type [-Werror]
cower.c:1596:3: error: passing argument 1 of ‘alpm_pkg_get_version’ from incompatible pointer type [-Werror]
/usr/include/alpm.h:373:13: note: expected ‘struct pmpkg_t *’ but argument is of type ‘int *’
cower.c: In function ‘print_pkg_search’:
cower.c:1654:3: error: unknown type name ‘alpm_pkg_t’
cower.c:1658:3: error: passing argument 1 of ‘alpm_db_get_pkg’ from incompatible pointer type [-Werror]
/usr/include/alpm.h:270:10: note: expected ‘struct pmdb_t *’ but argument is of type ‘int *’
cower.c:1658:12: error: assignment from incompatible pointer type [-Werror]
cower.c:1660:4: error: passing argument 1 of ‘alpm_pkg_get_version’ from incompatible pointer type [-Werror]
/usr/include/alpm.h:373:13: note: expected ‘struct pmpkg_t *’ but argument is of type ‘int *’
cower.c: In function ‘resolve_dependencies’:
cower.c:1736:8: error: passing argument 1 of ‘alpm_db_get_pkgcache’ from incompatible pointer type [-Werror]
/usr/include/alpm.h:276:14: note: expected ‘struct pmdb_t *’ but argument is of type ‘int *’
cower.c:1743:4: error: passing argument 1 of ‘alpm_db_get_pkgcache’ from incompatible pointer type [-Werror]
/usr/include/alpm.h:276:14: note: expected ‘struct pmdb_t *’ but argument is of type ‘int *’
cower.c: In function ‘task_update’:
cower.c:2066:2: error: unknown type name ‘alpm_pkg_t’
cower.c:2081:3: error: passing argument 1 of ‘alpm_db_get_pkg’ from incompatible pointer type [-Werror]
/usr/include/alpm.h:270:10: note: expected ‘struct pmdb_t *’ but argument is of type ‘int *’
cower.c:2081:9: error: assignment from incompatible pointer type [-Werror]
cower.c:2089:3: error: passing argument 1 of ‘alpm_pkg_get_version’ from incompatible pointer type [-Werror]
/usr/include/alpm.h:373:13: note: expected ‘struct pmpkg_t *’ but argument is of type ‘int *’
cower.c:2101:8: error: passing argument 1 of ‘alpm_pkg_get_version’ from incompatible pointer type [-Werror]
/usr/include/alpm.h:373:13: note: expected ‘struct pmpkg_t *’ but argument is of type ‘int *’
cower.c: In function ‘main’:
cower.c:2329:2: error: passing argument 1 of ‘alpm_db_get_pkgcache’ from incompatible pointer type [-Werror]
/usr/include/alpm.h:276:14: note: expected ‘struct pmdb_t *’ but argument is of type ‘int *’
cower.c:2373:2: error: too many arguments to function ‘alpm_release’
/usr/include/alpm.h:66:5: note: declared here
cc1: all warnings being treated as errors

make: *** [cower.o] Error 1
==> ERROR: A failure occurred in build().
    Aborting...