04d90b5deb
Viktor Szakats
2026-03-16
Subject
configure: add option to trace pkg-config detection details
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.github/workflows/http3-linux.yml+1 -0
| @@ -346,6 +346,7 @@ jobs: | |
| runs-on: ubuntu-latest | |
| timeout-minutes: 10 | |
| env: | |
| + | CURL_TRACE_PKG_CONFIG: '1' |
| MATRIX_BUILD: ${{ matrix.build.generate && 'cmake' || 'autotools' }} | |
| MATRIX_INSTALL_PACKAGES: '${{ matrix.build.install_packages }}' | |
| strategy: | |
acinclude.m4+30 -1
| @@ -1326,6 +1326,29 @@ AC_DEFUN([CURL_EXPORT_PCDIR], [ | |
| fi | |
| ]) | |
| + | dnl CURL_TRACE_PCDIR ($module, [$pcdir]) |
| + | dnl ------------------------ |
| + | dnl show pkg-config module lookup details, along with a detailed errors |
| + | dnl message in case of failure. Supports both pkg-config and pkgconf. |
| + | dnl |
| + | |
| + | AC_DEFUN([CURL_TRACE_PCDIR], [ |
| + | dnl Example pkgconf line: |
| + | dnl libpkgconf/pkg.c:746 [pkgconf_pkg_t *pkgconf_pkg_try_specific_path(pkgconf_client_t *, [...]*)]: trying path: /usr/local/lib/pkgconfig for libngtcp2_crypto_gnutls |
| + | dnl Rest of strings are for catching classic pkg-config lines. |
| + | trc=`CURL_EXPORT_PCDIR([$2]) dnl |
| + | $PKGCONFIG --exists --debug $1 2>&1 | $EGREP '(trying path:|Adding directory|Looking for|Scanning directory|Cannot open directory)' | $SED 's/^.*trying path:/trying path:/'` |
| + | msg=`CURL_EXPORT_PCDIR([$2]) dnl |
| + | $PKGCONFIG --exists --print-errors $1 2>&1` |
| + | if test -n "$msg"; then |
| + | trc=`echo "$trc"; echo '==== error:'; echo "$msg"` |
| + | fi |
| + | AC_MSG_NOTICE([pkg-config --exists $1 trace: |
| + | ---- begin |
| + | ${trc} |
| + | ---- end]) |
| + | ]) |
| + | |
| dnl CURL_CHECK_PKGCONFIG ($module, [$pcdir]) | |
| dnl ------------------------ | |
| dnl search for the pkg-config tool. Set the PKGCONFIG variable to hold the | |
| @@ -1354,10 +1377,16 @@ AC_DEFUN([CURL_CHECK_PKGCONFIG], [ | |
| if test -z "$itexists"; then | |
| dnl pkg-config does not have info about the given module! set the | |
| dnl variable to 'no' | |
| - | PKGCONFIG="no" |
| AC_MSG_RESULT([no]) | |
| + | if test -n "$CURL_TRACE_PKG_CONFIG$CURL_CI"; then |
| + | CURL_TRACE_PCDIR([$1], [$2]) |
| + | fi |
| + | PKGCONFIG="no" |
| else | |
| AC_MSG_RESULT([found]) | |
| + | if test -n "$CURL_TRACE_PKG_CONFIG"; then |
| + | CURL_TRACE_PCDIR([$1], [$2]) |
| + | fi |
| fi | |
| fi | |
| ]) | |
docs/INSTALL.md+4 -0
| @@ -135,6 +135,10 @@ curl can be built to use a whole range of libraries to provide various useful | |
| services, and configure tries to auto-detect a decent default. If you want to | |
| alter it, you can select how to deal with each individual library. | |
| + | To debug the build itself, you can set the environment variable |
| + | `CURL_TRACE_PKG_CONFIG` to a non-empty value to enable detailed trace |
| + | information and verbose errors from `pkg-config` module detection invocations. |
| + | |
| ## Select TLS backend | |
| These options are provided to select the TLS backend to use. | |